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Could someone please develop a good app that would enable the battery to be drained as much as possible and to charge slower so we could all properly calibrate our batteries?
Do we really need this since it's a Li-ion battery? I know Ni-Mh and Ni-Cad has memory effect, but not on the Li-Ion battery.
I was just wondering the same thing today....simply because there seems to be several different methods to do it. Some say charge 8 hours, turn off, charge and hour, unplug, turn on charge 10 minutes. Then other methods say to do something different....be nice to have an app to walk you through different methods so you know step by step your doing it right
I calibrated mine last night and I'm going to get about 18 hours if not more from it....before yesterday I was getting 9.
The ONLY other different I did was make some profiles on CPU but I cant imagine it would make that much of a difference. I bet its a mix of both
deonjahy said:
Could someone please develop a good app that would enable the battery to be drained as much as possible and to charge slower so we could all properly calibrate our batteries?
Click to expand...
Click to collapse
That is to funny I was just saying to my wife the other day that I should make one of these programs seeing that there are none already. I hate having to manually kill my battery every night before I charge it again.
Is it needed? It depends on your school of thought, some say yes, some say no. All I know is that on the few devices I have had in the past, if I constantly plug them in to "top them off" then the battery never ends up lasting very long after a few months of doing that. So I am a believer in killing the battery before charging on devices like these.
So the bottom line is if there is a desire for this, I may try to put an app together for it, as I know myself I am interested I just didn't think many others would be.
All the battery calibration tools, are basically deleting the file... right?
Is it that hard to boot into recovery and wipe battery stats?
deonjahy said:
Could someone please develop a good app that would enable the battery to be drained as much as possible and to charge slower so we could all properly calibrate our batteries?
Click to expand...
Click to collapse
I think the second part has to do with hardware. The phones hardware just doesn't have trickle charge implemented and instead lets it drop back down to 90% then starts charging it again.
As for the second part, it came on our phones, even has a default widget. 4G
paulieb81 said:
That is to funny I was just saying to my wife the other day that I should make one of these programs seeing that there are none already. I hate having to manually kill my battery every night before I charge it again.
Is it needed? It depends on your school of thought, some say yes, some say no. All I know is that on the few devices I have had in the past, if I constantly plug them in to "top them off" then the battery never ends up lasting very long after a few months of doing that. So I am a believer in killing the battery before charging on devices like these.
So the bottom line is if there is a desire for this, I may try to put an app together for it, as I know myself I am interested I just didn't think many others would be.
Click to expand...
Click to collapse
Um... actually that is (by most accounts) bad for Li-Ion. You want to AVOID completely draining them. All of this stuff is more art than science, but I have way more often heard that completely draining LI batteries is bad. What kills them is the number of cycles they have been through (like -25 +25, -25 +25, -50 +50 would be a full cycle).
You do however want to give them a full up down cycle once in a while (maybe every 1-3 months) for calibration.
Then again, as I said, it is more art than science, and I have heard your method as being better, but the not draining argument seems to be the vast majority.
I'll try to do a little look-see and update this or repost if I find any stronger evidence.
the thing about my phone and battery that ALWAYS baffled me was i would plug it in at night be it at 10% or 22 i would leave plugged in while slept i would wake up unplug and look at battery percentage and it would be like 95.....no other phone has even unplugged and dropped 5 percent by doing nothing????
turn your brightness to 100% and change it so that it never turns off; use wifi tether and play a 720p movie at the same time; oc your kernel to it's highest stable frequency. it'll drain pretty quickly.
I know I might get flamed for this....
Apple suggests, with their laptops, to once a month or so, run the battery completely down. Then let the battery cool down for a little bit. Then give it a full, uninterrupted, overnight charge. I forget if they said to repeat this a second time, then you're good.
This is all from memory of me reading this a couple years ago or so, so our might not be verbatim. Their laptops use lithium ion technology...
(and they used to blow up and melt down too!) Lol!
Wrong word choice and misspelling courtesy of swype.
mykeldrip said:
the thing about my phone and battery that ALWAYS baffled me was i would plug it in at night be it at 10% or 22 i would leave plugged in while slept i would wake up unplug and look at battery percentage and it would be like 95.....no other phone has even unplugged and dropped 5 percent by doing nothing????
Click to expand...
Click to collapse
That's because the phone stops charging when it reaches 100%, and runs off of battery probably until it reaches in the low 90s, then charges again. You won't ever notice this because the light will always be green. However, you'll notice that unplugging it a few moments after it turns green, the battery will stay anywhere from 100%-98% for a while. At least on my phone it does.
Is there any way to make this program "auto run" during sleep so it can do everything it needs to do during the night charge (similar to quickpull for blackberry)
laydros said:
I think the second part has to do with hardware. The phones hardware just doesn't have trickle charge implemented and instead lets it drop back down to 90% then starts charging it again.
As for the second part, it came on our phones, even has a default widget. 4G
Um... actually that is (by most accounts) bad for Li-Ion. You want to AVOID completely draining them. All of this stuff is more art than science, but I have way more often heard that completely draining LI batteries is bad. What kills them is the number of cycles they have been through (like -25 +25, -25 +25, -50 +50 would be a full cycle).
You do however want to give them a full up down cycle once in a while (maybe every 1-3 months) for calibration.
Then again, as I said, it is more art than science, and I have heard your method as being better, but the not draining argument seems to be the vast majority.
I'll try to do a little look-see and update this or repost if I find any stronger evidence.
Click to expand...
Click to collapse
I am by no means an expert so if you find any reliable info on this and can link us to read, I would love to learn more. All I know is that it is commonly said to drain rechargeable batteries and that I have seen that topping them off very often does lead to battery life degradation.
Tyzing said:
Is there any way to make this program "auto run" during sleep so it can do everything it needs to do during the night charge (similar to quickpull for blackberry)
Click to expand...
Click to collapse
There is no need to fully drain the battery. Its purpose in calibration is to configure the software that is correlating voltage to percentage charged. That's all. Regarding the old Apple advice, that is doing the same thing. It will not affect the hardware.
Now, what WILL affect the hardware is charging itself. Every charge/discharge cycle will reduce the total capacity of the battery. This is why the EVO will not cycle on it's own until 10% discharged. It's improving the overall battery life by that restriction.
In short, you will save money overall by getting a higher capacity battery that you don't force to charge too often. Draining your battery does nothing but give you peace of mind and it only really needs recalibrating when it's total capacity has been reduced which isn't often. 3-6 months.
Sent from my PC36100 using XDA App
herbthehammer said:
I know I might get flamed for this....
Apple suggests, with their laptops, to once a month or so, run the battery completely down. Then let the battery cool down for a little bit. Then give it a full, uninterrupted, overnight charge. I forget if they said to repeat this a second time, then you're good.
This is all from memory of me reading this a couple years ago or so, so our might not be verbatim. Their laptops use lithium ion technology...
(and they used to blow up and melt down too!) Lol!
Wrong word choice and misspelling courtesy of swype.
Click to expand...
Click to collapse
Yeah except that's not a good idea, it will kill the weak cells.
I understand. Still think it would be useful if it would do the "juice until LED changes" method while sleeping though
paulieb81 said:
So the bottom line is if there is a desire for this, I may try to put an app together for it, as I know myself I am interested I just didn't think many others would be.
Click to expand...
Click to collapse
I'm interested!
Btw - what are the charging calibrations people are using? Are you seeing one working better than another?
Im a noob, so take what I say worth a grain of salt but yesterday I did the standard method where you fully charge...turn off...plug back in until led changes green and do it a few times.
I went from 9 hours to 17 hours with no other changes except a few profiles in setCPU.
I did this just last night so my results are fresh.
Tyzing said:
I calibrated mine last night and I'm going to get about 18 hours if not more from it....before yesterday I was getting 9.
The ONLY other different I did was make some profiles on CPU but I cant imagine it would make that much of a difference. I bet its a mix of both
Click to expand...
Click to collapse
A few SetCPU profiles is all it takes to see a dramatic increase in battery life, especially while screen off. If you disable it I bet whatever gain you think was from 'calibrating' it disappears.
Hi Guys,
I actually have a HD7m but my dad quite liked the 4.3 inch screen and was now asking me to buy a similar handset. We went out and he was quite impressed with the Desire HD.
But the catch, when I researched online, I found out the battery issue on practically every thread and community.
Now my problem: He is an old man and can get cranky at times. Currently owes a Nokia C6 and is pissed with the touch screen. So is it wise to buy him Desire HD even with the bad battery life?
Or worse case scenario, I swap my HD7 for his Desire HD????
Should I go for it or should can you guys suggest something else equally fluid??
It doesn't have battery issues once calibrated. I have 1-5mA battery drain on standby, that's even when running MSN and CallerID2Voice App in the background. And I can still get hours out of it when using it. Just recharge it every-night. I doubt your dad will be a smartphone addicted guy.
FirefighterDown said:
It doesn't have battery issues once calibrated. I have 1-5mA battery drain on standby, that's even when running MSN and CallerID2Voice App in the background. And I can still get hours out of it when using it. Just recharge it every-night. I doubt your dad will be a smartphone addicted guy.
Click to expand...
Click to collapse
Hey,
Thanx...no he isn't a smart phone addicted guy. But the battery was so obvious an issue, I had to ask the experts here. Also, what exactly do you mean by 'calibrated'?
I mean, I have been an Android user before, but not quite sure what calibration is ?
He is a simple user with checking some mails everyday, music and some websites may be...thats about it, HTC Sense and all makes no difference to him actually...
If its battery life your after, buy a Johns Phone, you get 3 weeks between charges.
After you battery has been "run in" and calibrated you will get at least a day with light usage. Remember this is a powerful smartphone.
circleofomega said:
Hey,
Thanx...no he isn't a smart phone addicted guy. But the battery was so obvious an issue, I had to ask the experts here. Also, what exactly do you mean by 'calibrated'?
I mean, I have been an Android user before, but not quite sure what calibration is ?
He is a simple user with checking some mails everyday, music and some websites may be...thats about it, HTC Sense and all makes no difference to him actually...
Click to expand...
Click to collapse
The battery calibration concerns only those who are using a custom rom. (here's a short article with app that does it for you if you're interested). I wouldn't recommend the DHD for my own father. Whatever you do to it you'll almost always have to charge it overnight, with stock rom it could be even twice a day. This isn't a problem for smartphone enthusiasts, but for oldschool people (like my father) who think phones should last a week without charging this can be quite off-putting. The DHD is also starting to get kinda old already, so you might wanna take a look at some newer phones. A good alternative could be the Desire S, as it has almost the same features with a slightly better battery.
And to those who can't admit that the DHD has bad battery life I just have to say that the out-of-the-box battery life could and should be a lot better. To get it lasting as it should takes a bit of effort which shouldn't be required from a normal user.
Hawks556 said:
The battery calibration concerns only those who are using a custom rom. (here's a short article with app that does it for you if you're interested). I wouldn't recommend the DHD for my own father. Whatever you do to it you'll almost always have to charge it overnight, with stock rom it could be even twice a day. This isn't a problem for smartphone enthusiasts, but for oldschool people (like my father) who think phones should last a week without charging this can be quite off-putting. The DHD is also starting to get kinda old already, so you might wanna take a look at some newer phones. A good alternative could be the Desire S, as it has almost the same features with a slightly better battery.
And to those who can't admit that the DHD has bad battery life I just have to say that the out-of-the-box battery life could and should be a lot better. To get it lasting as it should takes a bit of effort which shouldn't be required from a normal user.
Click to expand...
Click to collapse
Thanx so much...that was really helpful...albeit your explanation on battery life, I just wanted to add that he was in love with the 4.3 inch screen...and only HD7 is the other device with that screen size...So I think Desire S is also a good option...let me check with him...
Again, Thanx!
depend on what you consider a good battery life, some may say getting a day is good enough, but some define good as atleast 2 days.
Hawks556 said:
And to those who can't admit that the DHD has bad battery life I just have to say that the out-of-the-box battery life could and should be a lot better. To get it lasting as it should takes a bit of effort which shouldn't be required from a normal user.
Click to expand...
Click to collapse
Absolutely right. I'm tired of hearing people evangelising that the DHD's battery is fine. It patently is not. Even when you severly rein back the device's features (features which HTC flaunted to get us all hooked), one ends up with 25-30% at the day's end.... And if you have a 'heavy' day of calls/browsing etc, you'll have to top up to get through the day.
But I still regard HTC as just about the best of a bad bunch...
Ok, sorry to hijack this thread a little.
The battery is fine, there are no issues with the battery. Your problem with the battery is that its small. Before you bought the phone did you not look into the battery capacity? I did, I knew it was smaller than the Desire's battery. Out-of-the-box it will act like any other lithium-ion battery that is just out-of-the-box. That "bit of effort" , what, plugging in your charger when it requires a charge.
These guides to correctly charge lithium-ion batteries are largely mumbo jumbo (charge to 100%, turn off, charge again for 250,000 hours, turn on, drain battery, rinse & repeat). Just charge it overnight, when your asleep.
Any smartphone with comparable usage will last around the same time and require a daily charge. If you want a phone that will last days between charges, don't buy a smartphone.
If you turn off all the bells & whistles, use 2G only and use it only for calls & sms', just like a regular phone. It will last days between charges.
If you want a powerful smartphone with a large screen, and lots of features, your battery is going to pay for it.
andyharney said:
Ok, sorry to hijack this thread a little.
Before you bought the phone did you not look into the battery capacity? I did, I knew it was smaller than the Desire's battery. Out-of-the-box it will act like any other lithium-ion battery that is just out-of-the-box. That "bit of effort" , what, plugging in your charger when it requires a charge.
Click to expand...
Click to collapse
I'm not sure anybody on this forum expects days of use between charges - we're not daft. What I expect is to not have power-saving mode kick in by late afternoon when I'm nowhere near a charger, and I've not used the thing particularly heavily.
It's not right to conclude that others didn't read up on the battery before purchasing. You have no basis for drawing such conclusions.
HTC marketed the DHD on the basis that it's architecture was such that it didn't need a higher-capacity battery to do its job. Based on the fact that I'd had pretty good experiences with my previous HTCs, I saw no reason to doubt this.
In any case, just because you don't mind charging your phone part-way through a day, doesn't mean that everybody else should be happy with that.
I don't Say ! ^^
baste07 said:
depend on what you consider a good battery life, some may say getting a day is good enough, but some define good as atleast 2 days.
Click to expand...
Click to collapse
That's why I said that there are "oldschool people" (like my father) who think the battery should last a week. I don't mind charging the phone every night, but there are people who can't cope with such a "short" battery life. That's why the battery life of the DHD should be taken under consideration when buying a new phone.
andyharney said:
Ok, sorry to hijack this thread a little.
The battery is fine, there are no issues with the battery. Your problem with the battery is that its small. Before you bought the phone did you not look into the battery capacity? I did, I knew it was smaller than the Desire's battery. Out-of-the-box it will act like any other lithium-ion battery that is just out-of-the-box. That "bit of effort" , what, plugging in your charger when it requires a charge.
Any smartphone with comparable usage will last around the same time and require a daily charge. If you want a phone that will last days between charges, don't buy a smartphone.
If you turn off all the bells & whistles, use 2G only and use it only for calls & sms', just like a regular phone. It will last days between charges.
If you want a powerful smartphone with a large screen, and lots of features, your battery is going to pay for it.
Click to expand...
Click to collapse
I didn't mean that the battery was bad quality or anything, just that it is a bit too small for such a powerful phone. And yes I was aware of the battery capacity and I don't mind, but again there are people that require more from their phones.
And the instructions to close connections when you're not using them and turning down the screen brightness etc. are plain stupid. I bought a smartphone so that I can get my email whenever and wherever and to enjoy the big screen and not so that I can receive emails only when I choose to and so that I have to squint to see something from the screen when the brightness is set to the lowest. This is just a couple of the features I need ofcourse, but for me it's important to always receive emails instantly and not only when I can afford to spend some battery on internet connection.
When I was still running stock rom I could barely get through a day at work (8 hours). I had mobile network on the whole time and the screen brightness set at about 50% (which I think should be used at 100% all the time to really enjoy the screen) I talked for about half an hour during the days, sent 10 texts and listened to music/played/surfed on the internet for about 3 hours in all. When I got home I had to charge it. This ofcourse is everything one could need, but there are smartphones with better battery life.
Now of ofcourse when I have a custom rom that's tweaked and everything there's no problem with battery life, but that shouldn't be necessary to do and it's quite a lot to ask just so you can have a decent battery life. That's why I was talking about out-of-the-box battery life.
Hawks556 said:
That's why I said that there are "oldschool people" (like my father) who think the battery should last a week. I don't mind charging the phone every night, but there are people who can't cope with such a "short" battery life. That's why the battery life of the DHD should be taken under consideration when buying a new phone.
I didn't mean that the battery was bad quality or anything, just that it is a bit too small for such a powerful phone. And yes I was aware of the battery capacity and I don't mind, but again there are people that require more from their phones.
And the instructions to close connections when you're not using them and turning down the screen brightness etc. are plain stupid. I bought a smartphone so that I can get my email whenever and wherever and to enjoy the big screen and not so that I can receive emails only when I choose to and so that I have to squint to see something from the screen when the brightness is set to the lowest. This is just a couple of the features I need ofcourse, but for me it's important to always receive emails instantly and not only when I can afford to spend some battery on internet connection.
When I was still running stock rom I could barely get through a day at work (8 hours). I had mobile network on the whole time and the screen brightness set at about 50% (which I think should be used at 100% all the time to really enjoy the screen) I talked for about half an hour during the days, sent 10 texts and listened to music/played/surfed on the internet for about 3 hours in all. When I got home I had to charge it. This ofcourse is everything one could need, but there are smartphones with better battery life.
Now of ofcourse when I have a custom rom that's tweaked and everything there's no problem with battery life, but that shouldn't be necessary to do and it's quite a lot to ask just so you can have a decent battery life. That's why I was talking about out-of-the-box battery life.
Click to expand...
Click to collapse
If you want to receive emails and text, I find that GSM is fine for that. If you want to go internet browsing, just switch on to 3G.
Smartphones these days have basically a different definition of battery life to the old nokia symbian and similar phones of old. Those could go up to a week. Smartphones on the other hand are considered awesome if they can last 3.
I do have to say ultimately I think HTC sold the battery life a bit short on the DHD. 1230mah I think is really just making way for all the other top-of-the-line features that it had when it came out.
HTC have released a great number of variants of this phone now, all with better iterations of design and also with bigger batteries because of this.
1400-1500mah (or even above) I think is really what you need with a 4.3" display phone. 1230 would be far more acceptable for a <4" display. Although it can be made quite livable for a day or two with an excellent custom rom, I don't really think it's enough for a basic consumer using the standard rom. That and the speaker/audio out are the two biggest pitfalls of the DHD imo.
Sensation is now HTC's newest 4.3" phone which has a good 1500mah battery. I hope Sense 3.0 doesn't wear it down too fast!
Ultimate thoughts: Although it's a great phone, I think it's a power user's phone more than anything. You will definitely only get the best out of it by customising to it's best potential, which is also when you get acceptable battery life. If you don't, it really does seem a waste.
Hawks556 said:
When I was still running stock rom I could barely get through a day at work (8 hours). I had mobile network on the whole time and the screen brightness set at about 50% (which I think should be used at 100% all the time to really enjoy the screen) I talked for about half an hour during the days, sent 10 texts and listened to music/played/surfed on the internet for about 3 hours in all. When I got home I had to charge it. This ofcourse is everything one could need, but there are smartphones with better battery life.
Now of ofcourse when I have a custom rom that's tweaked and everything there's no problem with battery life
Click to expand...
Click to collapse
+1
I had the same sort of expectancy out of the battery using it moderately during a day at work out of the box. However with custom ROM installed I have found the battery to last easily the whole day with the same usage and probably have approx 40 - 50% left after 15hrs on battery.
just my 2c
andyharney said:
Ok, sorry to hijack this thread a little.
The battery is fine, there are no issues with the battery. Your problem with the battery is that its small. Before you bought the phone did you not look into the battery capacity? I did, I knew it was smaller than the Desire's battery. Out-of-the-box it will act like any other lithium-ion battery that is just out-of-the-box. That "bit of effort" , what, plugging in your charger when it requires a charge.
These guides to correctly charge lithium-ion batteries are largely mumbo jumbo (charge to 100%, turn off, charge again for 250,000 hours, turn on, drain battery, rinse & repeat). Just charge it overnight, when your asleep.
Any smartphone with comparable usage will last around the same time and require a daily charge. If you want a phone that will last days between charges, don't buy a smartphone.
If you turn off all the bells & whistles, use 2G only and use it only for calls & sms', just like a regular phone. It will last days between charges.
If you want a powerful smartphone with a large screen, and lots of features, your battery is going to pay for it.
Click to expand...
Click to collapse
I am extremely sorry but I disagree with u completely. You are talking as if you buy an expensive car but dont drive it too much as it eats a lot of fuel. If you want to just drive around, why dont you just get yourself a mopet. The point is, i have bought an expensive car TO DRIVE it around. If I buy a smartphone and not use its SMART features, why am I buying it for??? If I practically shut all the reasons why I bought this phone, WHY the hell am I buying it??
There is an old saying that comes to mind that it takes guts to stay in the minority. If the battery is flawed, ACCEPT it.
Anyways, I have got my answer. Thanx for your reply nonetheless.
As everyone says depends on usage.
For one thing i went from 80mA down to 8mA just by updating the radio which came stock.
Now with a different rom and kernel I get -1mA on standby, juicedefender is also a nice app. The battery life depends on your setup though, I easily get 2 days of moderate use/music/games/calls etc.
jpinky said:
As everyone says depends on usage.
For one thing i went from 80mA down to 8mA just by updating the radio which came stock.
Now with a different rom and kernel I get -1mA on standby, juicedefender is also a nice app. The battery life depends on your setup though, I easily get 2 days of moderate use/music/games/calls etc.
Click to expand...
Click to collapse
Hey thanx man...But was just wondering, with very moderate usage, will it still be over in no time?
Also, the other thing worrying me is the memory card issue...I cant afford to lose one card after another once I buy an expensive phone, u know what I mean...
The battery life is acceptable with moderate use on stock rom, if you're a power user you will have to stay close to a charger
There's no memory card issue from the DHD's part, it's just the crappy "freebie" sdcard (samsung?) which comes with the phone that stops working. The people who are complaining that the DHD breaks sdcards are those who buy cheap, bad quality sdcards or get a warranty replacement for the original one, which will be just as bad. The solution to this is to buy a better quality microsd card (costs about 15€) if the original stops working. Mine's still working great though.
Hawks556 said:
The battery life is acceptable with moderate use on stock rom, if you're a power user you will have to stay close to a charger
There's no memory card issue from the DHD's part, it's just the crappy "freebie" sdcard (samsung?) which comes with the phone that stops working. The people who are complaining that the DHD breaks sdcards are those who buy cheap, bad quality sdcards or get a warranty replacement for the original one, which will be just as bad. The solution to this is to buy a better quality microsd card (costs about 15€) if the original stops working. Mine's still working great though.
Click to expand...
Click to collapse
After receiving a replacement 'new' phone, and having problems with my SD Card from the very second it switched on, I complained to HTC about the issue and the man on the end of the phone admitted around 500,000 phones that had been dispatched has been shipped with KNOWN issues & SD Card incapabilities. If you went out today and bought a brand spanking new card, in theory the phone WOULD NOT and the SD Card WOULD NOT fail.
mjt said:
I'm not sure anybody on this forum expects days of use between charges - we're not daft. What I expect is to not have power-saving mode kick in by late afternoon when I'm nowhere near a charger, and I've not used the thing particularly heavily.
It's not right to conclude that others didn't read up on the battery before purchasing. You have no basis for drawing such conclusions.
HTC marketed the DHD on the basis that it's architecture was such that it didn't need a higher-capacity battery to do its job. Based on the fact that I'd had pretty good experiences with my previous HTCs, I saw no reason to doubt this.
In any case, just because you don't mind charging your phone part-way through a day, doesn't mean that everybody else should be happy with that.
Click to expand...
Click to collapse
I don't mean to hijack you here mate, but you assume/claim that:
'HTC marketed the DHD on the basis that it's architecture was such that it didn't need a higher-capacity battery to do its job.'
Well I take it that you assume this on the basis that Leprechauns are real and are roaming New York city as we speak? If HTC were doing any market research at all, they would realize that even devices with smaller screens have a bigger battery than the one they have put into the DhD, including the Desire Z & Desire's batteries?
I remember when I was looking at reviews for the original Desire, as I fancied one, the main complaints were the battery life, and the fact people only got a day's charge on it. So I thought fair do's, big screen, big price to pay? If HTC had done any research, they would have realized that people wanted better battery life, a better quality screen, better sound quality?
You want to know what the real reason is behind HTC putting a small battery inside the Device? Well it's the fact that the entire thing was rushed, and I mean rushed? There's evidence of this in the build quality, the software, the placing of different things within the phone and also the bad batch issues HTC experienced.
The HD was leaked in September/October, it was released by November, this is not normal for any device that becomes 'leaked'. HTC used a bad screen, imported most of the software from the original Desire, obviously making edits to make it Sense 2.0, but you can clearly see they didn't change everything? If you set the Android Pattern Lock Screen, you can see that it doesn't fill the whole screen, the IME is the standard HTC one with some arrows slapped in at the bottom? They didn't even change the size of the keyboard?, this is more evident if you use the IME in landscape mode, its hard.
What sort of company places an Antenna in the Battery Cover? It's true, remove your Battery Cover and you'll loose all signal? Pretty risky move for HTC, seeing as the Battery Cover is VERY easy to 'accidently' break, and frankly your screwed then right? It's like they designed the phone, forgot the Antenna, then quickly though 'Where the f*** is this going?' and decided to place it there? In my opinion, and a few others, they did this with the battery, they made the device too thin, and in reality they just couldn't fit everything in. The Desire S which is slightly thicker, packs a brilliant battery. Problem solved.
The build quality of the phone, is not one of a £500 price tag. Some parts of the phone squeak whereas others just do not feel adequate to the pricing of the device. There again we live in a world where no matter how much you pay, something always seems to be wrong.
Sorry if I have offended any HTC lovers, all attacks on my and opinions against me are welcome, don't get me wrong, I love my phone and I can cope with charging the battery every night. Chao.
I think the most complained about issue with SGSII is the battery.
But is it such a big issue.
My situation : Inspite of heavy use I usually make an entire work day with atleast 10-20% battery left.
I always have a micro usb cable in my locker at work which is an emergency back up.
The reason for poll : To correct my ignorance as I think majority of people are unnecessarily complaining
I'm with you, OP.
Certainly, the battery life of the GS2 is unimpressive. I would even agree if someone said that the battery life is below average.
But it does seems like a lot of people who complain about the battery life just have unrealistic expectations. Using the phone will lower the battery level. That seems pretty natural to me. If you're going to keep the display on for over an hour, you can't expect the battery level to dip just 1% or 2%.
Then there are people who talk about the Android-OS bug. They show some impressive data on usage depending on scenarios. It's an interesting read and I understand what they're trying to say. But at the end of the day, it doesn't really matter to me. Before I knew about the Android-OS bug, my usage patterns meant that my battery level drops to about 30% by the time I get home from work. After I read about the Android-OS bug, it didn't change my usage patterns and my battery performs same as before.
Sure, it would be great if the battery never dips below 90% but unless the day comes when we have tiny self-sustaining fission reactors built-in to your devices, it won't be happening. (I'm thinking about that thing that Doc Ock invented in Spiderman2, just smaller.)
ohyeahar said:
Sure, it would be great if the battery never dips below 90% but unless the day comes when we have tiny self-sustaining fission reactors built-in to your devices, it won't be happening. (I'm thinking about that thing that Doc Ock invented in Spiderman2, just smaller.)
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You got me all excited.
I dream of the day when we have batteries the size of a grain that will last for few years, like most watches
Missing selection
never happened rarely charge .
jje
JJEgan said:
Missing selection
never happened rarely charge .
jje
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may be next time
Completely depends on usage. Generally have 30-40% remaining everyday - screen use of 3-4 hours. gmail, FB on 30 min syncs, EDGE always on. Ended up with 78% remaining on a day on which I had a lot of work to do (so less time on the phone)
Can't expect more from a smartphone at this point of time. (using Lite'ning ROM 1.5, Tegrak OC 1.4 Ghz)
Unfortunately My device battery life is poor too
I can make it most of the day through work without recharging, and that's considering having both bluetooth turned on and either music or podcasts playing most of the day, and that the building I work in being very good at blocking wireless signals, so my phone spends alot of time trying to find a connection.
Knock on wood, ive been really lucky
i have an optus ke2 that has been rooted and all ive done is remove the optus stock and other not need apps, and so far, still being at the stage where the phone gets turned on every 5 min, ive needed to charge every second day or so with brightness on full.
i love my SgsII
How many of you with bad battery life have also got an sd-card plugged in?
I've just taken mine out (class 10 16GB) and it seems to have improved battery life?
Without SD card, and with power saving mode on, I get 3 days but with only EDGE on and routine voice calls.
Facebook takes the most battery and also the browser, I feel.
BUT NO WIFI and NO 3G! Its bad, thinking of extended battery if I have to used all that stuff.
When I got my one x roughly two weeks ago, battery life wasn't really that good. 8 hours max with a couple of hours of screen time. But I always calibrate my battery. When I got it I charged it for 8 hours then drained it then did the same thing for a whole week just using the phone till the battery runs out and then charge it for 5 hours... Now battery life is very good, EASILY last me through a whole day with moderate to heavy usage. Lots of tapatalk 2, browsing, messaging and emails. I'm also running ARHD rom so that also help but nonetheless battery calibration is important so do it people
Never calibrated or whatever, have excellent (for me) battery life.
I thought we got over this myth.....
OP, do you have some supporting evidence, or even logic, that shows that doing exactly what you shouldn't do with a li-po battery has a positive effect?. Have you A /B tested it against another handset where you treated the li-po battery as recommended? I.E, avoiding fully discharging it and preferably charge from around 50%.
I get up to 4 hours screen time and 4-5 days standby having treated the battery this way with just a handful of total discharges (obviously it not always possible to avoid)
farnsbarns said:
OP, do you have some supporting evidence, or even logic, that shows that doing exactly what you shouldn't do with a li-po battery has a positive effect?. Have you A /B tested it against another handset where you treated the li-po battery as recommended? I.E, avoiding fully discharging it and preferably charge from around 50%.
I get up to 4 hours screen time and 4-5 days standby having treated the battery this way with just a handful of total discharges (obviously it not always possible to avoid)
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Do I have evidence? No I didn't capture any screentshots or anything. This is from my personal experience I'm not here to prove to you anything, just sharing how my battery life is improving cause of battery calibration. My phone no longer display for example 25% then soon as I use it jumps to 19% like before. It decreases gradually and I get excellent battery life. Same thing with my I pad when is discharge it completely then recharge it, I see better battery life and better battery % display accuracy.
barondebxl said:
Do I have evidence? No I didn't capture any screentshots or anything. This is from my personal experience I'm not here to prove to you anything, just sharing how my battery life is improving cause of battery calibration. My phone no longer display for example 25% then soon as I use it jumps to 19% like before. It decreases gradually and I get excellent battery life. Same thing with my I pad when is discharge it completely then recharge it, I see better battery life and better battery % display accuracy.
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Li - po batteries do improve with the first few charge cycles but this has nothing to do with the fact you have run it flat. Doing so regularly will shorten the life of the battery. You stated that it had a positive effect but you have no comparison and it flys in the face of the laws of physics and chemistry. The point of my post was to make it clear to anyone who doesn't know better that it's bs and will be detrimental to battery life.
Though LiPo batteries don't like to be overly discharged, I'd stop short of saying that this is detrimental to your battery. LiPo batteries shouldn't be left at low voltage (dead) for long periods of time, but discharging it entirely and then recharging it is well within the designed specs of the battery. It's more the fact that they lose charge over time, and therefore leaving them dead which is considered their minimum safe voltage, will then allow them to drain further themselves over time to a point where it's detrimental. I suppose, though, a battery drained to 0% every single time is more likely to have a shorter life than a battery discharged only to 20% before recharging.
The Android system does calibrate the battery life, which is more of what you'd be doing, but you aren't going to get more battery life out of a battery by discharging it entirely, then charging it fully, it just doesn't work like that. LiPo batteries don't have issues with memory or needing to be discharged or charged to a certain point for optimum performance.
I 100% attribute bad battery life when you first get a phone to simply being you pulling it out and turning it on more than you normally would. It's nearly impossible, and damn near subconscious, but when you get a new toy, you're obviously going to pull it out to look at it, play with it, load every different app it has, etc, as well as doing the same when you show it to people. I think even if you think you didn't play with it a lot when you first got it, you likely still do. But that's just my opinion.
https://plus.google.com/u/0/105051985738280261832/posts/FV3LVtdVxPT
read that calibration not needed
AJerman said:
Though LiPo batteries don't like to be overly discharged, I'd stop short of saying that this is detrimental to your battery. LiPo batteries shouldn't be left at low voltage (dead) for long periods of time, but discharging it entirely and then recharging it is well within the designed specs of the battery. It's more the fact that they lose charge over time, and therefore leaving them dead which is considered their minimum safe voltage, will then allow them to drain further themselves over time to a point where it's detrimental. I suppose, though, a battery drained to 0% every single time is more likely to have a shorter life than a battery discharged only to 20% before recharging.
5
The Android system does calibrate the battery life, which is more of what you'd be doing, but you aren't going to get more battery life out of a battery by discharging it entirely, then charging it fully, it just doesn't work like that. LiPo batteries don't have issues with memory or needing to be discharged or charged to a certain point for optimum performance.
I 100% attribute bad battery life when you first get a phone to simply being you pulling it out and turning it on more than you normally would. It's nearly impossible, and damn near subconscious, but when you get a new toy, you're obviously going to pull it out to look at it, play with it, load every different app it has, etc, as well as doing the same when you show it to people. I think even if you think you didn't play with it a lot when you first got it, you likely still do. But that's just my opinion.
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The dtremental effect will be minute, accepted, but there is certainly nothing to gain. That's what I wanted to make clear.
There is a lot of guesses portrayed as fact on here these days, as well as conclusions drawn from dubious experience with no control or comparisons. Just trying to combat this misinformation.
farnsbarns said:
The dtremental effect will be minute, accepted, but there is certainly nothing to gain. That's what I wanted to make clear.
There is a lot of guesses portrayed as fact on here these days, as well as conclusions drawn from dubious experience with no control or comparisons. Just trying to combat this misinformation.
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I know what you mean. I usually get yelled out when I try to do that and help, haha.
farnsbarns said:
Li - po batteries do improve with the first few charge cycles but this has nothing to do with the fact you have run it flat. Doing so regularly will shorten the life of the battery. You stated that it had a positive effect but you have no comparison and it flys in the face of the laws of physics and chemistry. The point of my post was to make it clear to anyone who doesn't know better that it's bs and will be detrimental to battery life.
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It flys in the face of the laws of physics??!!!??? What the hell are you talking about? I'm talking about my battery life getting better and better cause of draining it and recharging it not the gravity of the moon or Einstein theories, relax.
farnsbarns said:
The dtremental effect will be minute, accepted, but there is certainly nothing to gain. That's what I wanted to make clear.
There is a lot of guesses portrayed as fact on here these days, as well as conclusions drawn from dubious experience with no control or comparisons. Just trying to combat this misinformation.
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LMAO, get out of your basement.
AJerman said:
I know what you mean. I usually get yelled out when I try to do that and help, haha.
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Yep, I just don't care if the truth means a fan of cereal box science gets their knickers in a twist. More than half of what gets posted now is erroneous guess work, assumptive, misleading noise that serves no purpose other than to dilute the factual helpful discussion.
I've never been much good at biting my lip.
farnsbarns said:
Yep, I just don't care if the truth means a fan of cereal box science gets their knickers in a twist. More than half of what gets posted now is erroneous guess work, assumptive, misleading noise that serves no purpose other than to dilute the factual helpful discussion.
I've never been much good at biting my lip.
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That's fascinating..... I wonder where that battery calibration thing started in the first place, I guess someone made that up just to mess with people right?
barondebxl said:
That's fascinating..... I wonder where that battery calibration thing started in the first place, I guess someone made that up just to mess with people right?
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For batteries that needed calibration? And as I said, a lot of people confuse calibrating the battery meter in the OS with calibrating the battery itself.
Read, learn: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
AJerman said:
For batteries that needed calibration?
Read, learn: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
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Read this, point 2.
http://osxreality.com/2009/07/18/4-tips-to-extend-your-lithium-battery-life/
To all of you who say that using up your battery shortens it's life, I have just one thing to say: the phone will never let you fully discharge the battery. Approx. 3.5V at which the phone turns off is far from the voltage of fully discharging (and potentially damaging) the battery.
Sent from my HTC One X using xda premium
barondebxl said:
Read this, point 2.
http://osxreality.com/2009/07/18/4-tips-to-extend-your-lithium-battery-life/
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As I said, this has nothing to do with calibrating the battery, and everything to do with calibrating the battery meter in the OS, which, by the way, will never be off by HOURS, maybe by a couple of minutes. This only needs to be done once every however many cycles, that site says 30, but I wouldn't even bother doing it more than once every couple of months at the most as you likely won't see any real gain from doing so, and it IS theoretically bad to overly discharge your phone. Doing it once in a while won't damage anything, but doing it every cycle, or every day for a week or anything like that is excessive, unnecessary, and, as farnsbarns mentioned, can wear on your battery.
Battery meter calibration has been discussed on this message board countless times, and every time it's proven to be nearly pointless in real tests.
Edit: This is not to mention that I think a lot of batteries/phones have charging circuits built into them that allows them to properly check the battery level itself, meaning calibration of the OS isn't necessary. I could be wrong on this, but I'm pretty sure I've read about this before.
AJerman said:
As I said, this has nothing to do with calibrating the battery, and everything to do with calibrating the battery meter in the OS, which, by the way, will never be off by HOURS, maybe by a couple of minutes. This only needs to be done once every however many cycles, that site says 30, but I wouldn't even bother doing it more than once every couple of months at the most as you likely won't see any real gain from doing so, and it IS theoretically bad to overly discharge your phone. Doing it once in a while won't damage anything, but doing it every cycle, or every day for a week or anything like that is excessive, unnecessary, and, as farnsbarns mentioned, can wear on your battery.
Battery meter calibration has been discussed on this message board countless times, and every time it's proven to be nearly pointless in real tests.
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Nothing to do with battery calibration? Have you read the article? If you want accurates readings, you want your battery life to improve, you probably want to calibrate your battery. I've had the one x for almost two weeks and my phone doesn't jump from 50% to 42% randomly anymore cause I've calibrated the battery. If you want more reading : http://www.themobileindian.com/news/5547_How-to-calibrate-smartphone-battery
No one here said that it is something you need to do everyday, but when you get your phone I suggest doing it. Then once it's calibrated do it once a week or every other week.
AJerman said:
Edit: This is not to mention that I think a lot of batteries/phones have charging circuits built into them that allows them to properly check the battery level itself, meaning calibration of the OS isn't necessary. I could be wrong on this, but I'm pretty sure I've read about this before.
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they do have charging circuits I just read it, still you want accurate readings. Even my iPad sometimes displays wrong battery percentage when I don't let it discharge. Sometimes I charge it when it's at like 28% for example, let it fully charge but then it drains weirdly.
barondebxl said:
Nothing to do with battery calibration? Have you read the article? If you want accurates readings, you want your battery life to improve, you probably want to calibrate your battery. I've had the one x for almost two weeks and my phone doesn't jump from 50% to 42% randomly anymore cause I've calibrated the battery. If you want more reading : http://www.themobileindian.com/news/5547_How-to-calibrate-smartphone-battery
No one here said that it is something you need to do everyday, but when you get your phone I suggest doing it. Then once it's calibrated do it once a week or every other week.
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You are failing to listen to what I'm saying. I've read the article, and many others like it. There is no such thing as calibrating Lithium batteries, and it's a common misconception, so I have full faith that you can find countless web pages telling you you can. It comes from the old mindset of batteries that did need certain charge cycles (full discharge, full charge, etc) to maintain life.
Again, the only thing you calibrate when you run the battery all the way down is the OS's battery meter. Android shuts itself down automatically when battery voltage hits a level that is considered empty or dead, regardless of what the battery meter says, so that calibration gives you no more life out of your battery at all.
However, I think we all run down our phones to the point where they auto shutdown more than frequently enough to consider the battery meter calibrated very close at any given time. Battery meter calibration is more an issue on systems that stay plugged in frequently and don't often get discharged, this is usually with laptops used as a desktop replacement, not phones.
We aren't trying to be mean or anything, just trying to squash the continued misconception that calibrating the battery is possible or has any effect.
I have been searching as to what is the proper way to cycle charge so I can get the best battery life after installing new kernel and ROM.
However I seem to find different answers
One to drain in completely others say don't?
What do I do?
Unless someone links you to a peer reviewed research paper, you will be reading random anecdotes.
proud a-clown said:
Unless someone links you to a peer reviewed research paper, you will be reading random anecdotes.
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I wouldn't consider the manufacturer's suggested charging cycles to be "random anecdotes" even if they're not published in a peer reviewed journal.
"Completely draining" should not be practiced on a regular basis with lithium ion. You can't (or shouldn't be able to) reach an actual complete drain before the phone shuts down. If you could (or ever do) the battery would become useless to you as there is a point of low discharge where lithium ions can no longer be charged by a standard charger.
And while most of the time the shut down of the phone and the subsequent charger connection happens before this point - there have been plenty of people who have let their phones go till they shut down then go to charge their battery only to find it will no longer charge.
So every time there is a drain of your battery to the point your phone shuts off you get real close to that point where you will no longer be able to charge that battery (unless your one of those techno chemist electrical engineer types with all the appropriate tools and materials handy).
Sent from my SAMSUNG-SGH-I747 using XDA Premium HD app
http://www.dansdata.com/gz011.htm
And i know i've read somewhere about someone suggesting that people go through this arduous process of draining the battery to a point, charging it fully, draining it completely, and charging it fully again (or something crazy like that... i don't remember exactly) to make the phone detect the full capacity of the battery and avoid any "memory effect", and i believe that whole idea was even shot down by someone at Google who works on the Android OS as being a complete crock.
I really don't think there is any PROCESS that can be done to give you the optimal battery life, aside from what can be done to prevent apps from draining the battery constantly. Some people recommend having a fully charged battery, or having the phone plugged in when you wipe the phone and install a new ROM... i've rarely done that. I've even wiped and installed roms at like 40% battery life... sometimes a bit lower. But in my experience, battery life has more to do with the ROM being used than what you did to try to MAKE the battery life better.
Running a touchwiz-modded ROM like DrewGaren's Serenity and stuff, i'd generally be lucky to get a full day of battery life seemingly no matter how much or how little i used the phone. I'm not what i'd consider a heavy user.... haven't really used my phone much all day today, though it did spend a good portion of the day on the charger. But i'm running the latest build of Task & Ktoonsez AOKP ROM, and it's been on battery for 9.75 hours and is still at 85%... but that's only with 20 minutes of screen time.
Anyway.... all i can say is from my own personal experience, but i don't think there is really any definitive process one can follow to improve battery life beyond what the software itself will do anyway.
Whether or not it has any effect on actual battery performance i would say that running a 'full' cycle or two of drain and charge for android to learn the battery capacity. Probably doesn't have much affect on a stock battery but when i purchased my 4400mah battery it took a few cycles to get an accurate reading from the charge meter. It would drain down to the warning in what it was expecting the stock 2100mah to be dying and ran FF3 for atleast 2 hours non stop on 1-5% until the battery actually gave out. On top of that it couln't decided how much it really wanted to say was remaining, it would jump up and down a percent or two, obviously confused of what to do. Whether or not its necessary to run it to this point is debatable, but with android or myself not knowing how much charge was actually left in the battery i did.
http://forum.xda-developers.com/showthread.php?p=3846897#post3846897
http://www.batteryuniversity.com/partone.htm