Related
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.
Will "trickle-charge" kernels end up damaging our phones? *UPDATE: 8 CASUALTIES!*
I installed one of these amazing new kernels the other day and loved it. I was even able to keep 100% for about 30 minutes of usage and I was amazed. Yet today I checked Phandroid and an article from an XDA contributer came up:
http://phandroid.com/2010/12/25/you...is-lying-to-you-and-its-not-such-a-bad-thing/
In the article he explained (from what I understand) that he thinks knows it is a GOOD THING that phones aren't programmed to allow the battery to keep charging at the real 100% because it would end up damaging the battery in the end, much like how many of the early cell phone batterys would get damaged.
Until I find out the answer I (sadly) switched back to my old kernel, as I would rather be safe than sorry, at least until I find out for sure.
Any responses?
UPDATES:
_______________________________________________________________
CASUALTY LIST (please PM me any casualties, the list seems to be growing in numbers rapidly)
_______________________________________________________________
Battery Emitting "Smoke" : http://forum.xda-developers.com/showthread.php?t=904577
Battery Failure during Trickle Charge: http://forum.xda-developers.com/showthread.php?t=900412
SBC killed my battery: http://forum.androidcentral.com/htc-evo-4g-roms-hacks/51972-sbc-killed-my-battery.html
MIUI + Savage = dead battery http://forum.xda-developers.com/showpost.php?p=10422140&postcount=9 and http://forum.xda-developers.com/showpost.php?p=10432778&postcount=139
ANOTHER dead battery http://forum.androidcentral.com/htc-evo-4g-roms-hacks/51972-sbc-killed-my-battery-2.html#post517436
Battery loses charge after extended time with sbc kernel http://forum.xda-developers.com/showpost.php?p=10431788&postcount=49
Another one bites the dust... http://forum.xda-developers.com/showpost.php?p=10457753&postcount=162
COUNT ME IN http://forum.xda-developers.com/showpost.php?p=10469184&postcount=174
Current Count: 8
___________________________________________________________________
Various Dev Reactions:
Ziggy's editorial on WHY these kernels shouldn't exist and are dangerous (written before the new epidemic of dead batteries):http://www.ziggy471.com/2011/01/02/overcharging-batteries/
Netarchy's post explaining why he's REMOVING all SBC kernels from his page: http://forum.xda-developers.com/showpost.php?p=10421166&postcount=6185
___________________________________________________________________
THIS IS A CALL TO ALL ROM/KERNAL DEVELOPERS: Please don't include this feature in our favorite roms. I have been having to switch Kernels on my latest roms becuase I don't want to risk killing my battery (and that is a PAIN)
My $0.02:
I trust these developers on this site ALOT. What they have managed to do with the software is amazing. However, software is software. These trickle-charge kernels were amazing SOFTWARE-WISE. However, the effects of charges on batteries are not your specialty, so while it may be amazing that you all developed these kernels, there effect on the battery is not alright. I (sorry) trust an industry of battery/software engineers over some basement-developers who like pushing the limits (Pushing the limits is awesome, just not when it comes to batteries lol)
hmsheen10 said:
I installed one of these amazing new kernels the other day and loved it. I was even able to keep 100% for about 30 minutes of usage and I was amazed. Yet today I checked Phandroid and an article from an XDA contributer came up:
http://phandroid.com/2010/12/25/you...is-lying-to-you-and-its-not-such-a-bad-thing/
In the article he explained (from what I understand) that he thinks knows it is a GOOD THING that phones aren't programmed to allow the battery to keep charging at the real 100% because it would end up damaging the battery in the end, much like how many of the early cell phone batterys would get damaged.
Until I find out the answer I (sadly) switched back to my old kernel, as I would rather be safe than sorry, at least until I find out for sure.
Any responses?
Click to expand...
Click to collapse
Yup, there is a reason why all the phone makers have them charge like that and there is also a reason why putting custom roms on your phone voids your warranty.
Remember hearing about all those ipod and lap top batteries that liked to blow up?
Edit: he's also forgetting that when the battery gets close to full the voltage starts changing less and less, to the point that it is nearly impossible to accurately tell how much battery you have when it is over 80% full
Sent from my PC36100 using XDA App
i knew it was too good to be true :\
yea i get amazing battery life with this trickle charging only when i leave it on charger for around 7+ hours. Sounds like i should stop using that then damn
Edit: didnt mean to quote anyone
From what I read the article didnt reveal any specifics to if and when it will damage a battery.The article seemed to suggest that because battery manufacturers changed how they implimented charging it means that trickle charging is bad. It does not have enough variables in this observation to come to any conclusion. If advancements have been made in the battery industry you could also come to the conlcusion that trickle charging is or would be ok.
I am not trying to go against the article or this thread but simply wondering if after a thorough evaluation of the battery capacity after say 3 months using trickle charging and one without trickle charging we give an conclusion.
If need be I will run my phone with trickle charging, will someone else volunteer there phone for research?
For the extra bump I get every day now Ill by a new battery for 15 bucks a little more often. Its worth it for me YMMV
Yep, trickle charging is bad for the battery. Rememebr when all those laptop batteries were catching on fire? Same thing could potentially happen if your battery is not charged properly. They charge the batteries the way they do for a reason. That reason is relatively long battery life and safety.
Here is a good article on the subject.
I think that the makers of all these new kernels than should put up a warning specifically pertaining to the dangers of the kernel
Sent from my EVO
Quoting ms79723 :
Will this damage my battery?
This charging method doesnt damage the batteries at all. It shouldnt. Because our batteries dont even charge up to 4.2V without the tweak. They charge up to 4.2V the first charge, then drop all the way down to 4.08V or something and then does these weird short burst chargers to 4.1-4.125V. Thats why there's the rapid drop in the morning. Because your voltage is actually at 4.125V and that's not 100%. So with this tweak, the charger keeps charging until you're at 4.2V (or the maximum voltage your battery can get to) and then it trickle chargers while at that voltage. The charger itself never turns off. Thats not a bad thing. Because as you reach your actual voltage, the mA decreases. Which is why our phones will never be damaged. You ever want to know why its really easy to charge from 50-80% but the charge from 90-100% seems to take so long? Its because from 50% the mA going into the phone is in the 600's. Once it reaches 90%, the mA is around 150 and once it reaches 95% you're looking at 90mA. The phone when absolutely idle uses anywhere from 60-120mA, even when on the charger. So charging from 90% to 100% takes longer becaus the mA going into the phone isnt always higher than the mA you're losing. This is the same with charging past 100%. As you leave the phone on the charger with this tweak, you're mA will decrease from 50mA all the way down to 2mA overnight. But on the charger you're losing about 30-60mA already, so you'll never overcharge the battery, in best case scenarios, you'll just maintain the voltage of 4.2 or around 4.2V.
Click to expand...
Click to collapse
Unfortunately, if you read their thread, they say they disagree that any harm is being done.
Personally, I am not a battery expert, though I do have some experience with them in the EV car field, but my understanding is these batteries will be damaged if continuously held at a full charge. That is why the manufacturers design the system to full charge, then discharge to approximately 90% and then charge again, continuously cycling the battery.
From what I have read and from talking to the guys who design Li-ion batteries, they say that prolonging the time that the battery is at full charge significantly reduces battery life. Over time it can also lead to overheating resulting in an unsafe battery. For those reasons, virtually all properly designed charging circuits for Li-ion batteries are set up to let the battery sit at full charge for the shortest time possible.
Vann's quote from the kernel thread proves my point, what it appears they are trying to do is hold the battery fully charged while it is on the charger. That might increase the amount of time you can run your phone in the short run. But in the long run it will kill the battery.
I suggest you guys RELAX and try to stick with the responsibility of handling your phone the easiest way possible. Being not the hardest way to learn, but you eventually find the way to start new each time you look at your phone. Just saying kinda like when I have my EVO, It is just peachy to have. I don't want to tear the skin or even puncture the screen. LOL Like a PEACH?
I'm imaginative today and well, I always try to keep my phone in cool conditions, for short say. I use Juice Defender with Ultimate Juice with a good nice kernel and ROM that suits it as it suits.
alekosy said:
I suggest you guys RELAX and try to stick with the responsibility of handling your phone the easiest way possible. Being not the hardest way to learn, but you eventually find the way to start new each time you look at your phone. Just saying kinda like when I have my EVO, It is just peachy to have. I don't want to tear the skin or even puncture the screen. LOL Like a PEACH?
I'm imaginative today and well, I always try to keep my phone in cool conditions, for short say. I use Juice Defender with Ultimate Juice with a good nice kernel and ROM that suits it as it suits.
Click to expand...
Click to collapse
wtf.........?
Well its just like rooting and flashing custom roms, it may do this it may do that. If its such a concern don't use it. I'm using it and my phone doesn't take 7 hours to charge and it doesn't overheat at all, its a risk I am taking and I don't hold the developer responsible for it if something goes wrong. I understand the concern about this and I'm sure he will add a disclaimer.
wow and i was just starting to appreciate the new kernels. thanks for ruining it for me guys...
haha no i guess thanks for saving me....
dkdude36 said:
wow and i was just starting to appreciate the new kernels. thanks for ruining it for me guys...
haha no i guess thanks for saving me....
Click to expand...
Click to collapse
Agreeeeeeeeeed!
wfrandy said:
Yep, trickle charging is bad for the battery. Rememebr when all those laptop batteries were catching on fire? Same thing could potentially happen if your battery is not charged properly. They charge the batteries the way they do for a reason. That reason is relatively long battery life and safety.
Here is a good article on the subject.
Click to expand...
Click to collapse
This article is confusing because it says 2 different things:
1. The current "trickle charging" kernels are safe but we should be calling them "topping off" instead:
Full charge is attained after the voltage threshold has been reached and the current has dropped to 3% of the rated current or has leveled off.
Click to expand...
Click to collapse
The kernels drop to 0mA at 4.20V, so the voltage threshold is reached and the current safely drops.
2. The kernel is not safe because it keeps the battery at 4.20V/cell continuously:
No trickle charge is applied because lithium-ion is unable to absorb overcharge. A continuous trickle charge above 4.05V/cell would causes plating of metallic lithium that could lead to instabilities and compromise safety. Instead, a brief topping charge is provided to compensate for the small self-discharge the battery and its protective circuit consume. Depending on the battery, a topping charge may be repeated once every 20 days.
Click to expand...
Click to collapse
What am I missing?
guys... this is from the article put up:
When charging above 4.30V, the cell causes plating of metallic lithium on the anode; the cathode material becomes an oxidizing agent, loses stability and releases oxygen. Overcharging causes the cell to heat up. If left unattended, the cell could vent with flame.
The "trickle charge" kernels never go near 4.30v, mine stops at 4.19. Also, the temperature during the "trickle" overnight is very low. after 8 hours of "trickling" my battery was at 30 degrees C. Only time will tell if the battery life is SLIGHTLY shortened from this charging, but it is in NO WAY NEAR exploding, catching fire, blah blah blah. Stop scaring people, read the articles you post yourself and actually look at what is going on in these kernels. You may surprise yourself!
Now, if you cant get a replacement battery because you live on the moon and want your battery life to stay 3 years instead of 2 1/2, then it is your choice to not use these kernels, but dont scare others away just because you don't want to partake.
aph said:
This article is confusing because it says 2 different things:
1. The current "trickle charging" kernels are safe but we should be calling them "topping off" instead:
The kernels drop to 0mA at 4.20V, so the voltage threshold is reached and the current safely drops.
2. The kernel is not safe because it keeps the battery at 4.20V/cell continuously:
What am I missing?
Click to expand...
Click to collapse
hmsheen10 said:
wtf.........?
Click to expand...
Click to collapse
Jfree3000 said:
Well its just like rooting and flashing custom roms, it may do this it may do that. If its such a concern don't use it. I'm using it and my phone doesn't take 7 hours to charge and it doesn't overheat at all, its a risk I am taking and I don't hold the developer responsible for it if something goes wrong. I understand the concern about this and I'm sure he will add a disclaimer.
Click to expand...
Click to collapse
dkdude36 said:
wow and i was just starting to appreciate the new kernels. thanks for ruining it for me guys...
haha no i guess thanks for saving me....
Click to expand...
Click to collapse
hmsheen10 said:
Agreeeeeeeeeed!
Click to expand...
Click to collapse
LOL I don't know, but battery trickling isn't good to be heard to deal nicely with these EVOs, but If you wanna try to give it a run or a test on your own, be prepared that you voided your warranty.
alekosy said:
LOL I don't know, but battery trickling isn't good to be heard to deal nicely with these EVOs, but If you wanna try to give it a run or a test on your own, be prepared that you voided your warranty.
Click to expand...
Click to collapse
Your warranty was void as soon as you were able to flash a kernel... seriously... (I still have had a screen replaced from separating though!)
Look! A brand new battery for your EVO for $2.92 shipped!!
http://cgi.ebay.com/1500-mAh-HTC-Ex...ccessories&hash=item4aa608f2c7#ht_3246wt_1198
I guess I don't care if I have to replace them... just as long as they last an extra couple of hours everyday...
You all know that there is NO WAY it can hurt the actual phone, right???
sd2649 said:
Your warranty was void as soon as you were able to flash a kernel... seriously... (I still have had a screen replaced from separating though!)
Look! A brand new battery for your EVO for $2.92 shipped!!
http://cgi.ebay.com/1500-mAh-HTC-Ex...ccessories&hash=item4aa608f2c7#ht_3246wt_1198
I guess I don't care if I have to replace them... just as long as they last an extra couple of hours everyday...
You all know that there is NO WAY it can hurt the actual phone, right???
Click to expand...
Click to collapse
And try JuiceDefender with UltimateJuice, the 2nd app is a small fee paid app for donation, but it's very useful with the right kernel and rom for your liking. Trust on that, I think everyone would probably agree that this way would be the safest legit way.
Can someone explain why my battery sheds the first 10 percent from full charge within a half hour or direct me to a post that could explain this?
Sent from my PC36100 using XDA App
From what I've read, there's a chip inside the OEM batteries (the ones sold by HTC and included with the Evo) that prevents the battery from maintaining a full charge. This is because maintaining a full charge can overheat and overvolt the battery and cause problems.
Thus, when you unplug, your battery drops to where the charge actually ends up when the chip stops the charge from destroying the battery.
We used to have SBC kernels that rectified this problem, but after a couple of idiots forgot the part where it says "this may harm your phone, use with caution" they went on a terror-filled witch hunt and had them all taken down.
So, until there's another way, you're stuck with that buddy. Best of luck.
this is one of the more discussed topics nowadyas, or more the fix is.
so, li-on batterys like the evo one, can be damadged/metallic plated by containing a full charge for an extended period of time. so, battery manufacturers made charginng cycles, so once the battery is full, the charger will fully turn off until it has reached 90, and then power back up again.
recently, ms(numbers i cant remember. confusing username) made sbc (superior battery charging) kernels, that trickle charged, so your phone would sit at 4.2mV and not cycle. there has been much controversy about these, including some finger pointing and borked batteries (mine has never been the same since using these, but i really dont want to blame ms########) have lead to most if not all links being removed from the xda. too bad.
Thanks for the info guys, I just flashed a different kernal and did some set CPU clocking tweaks that have made me over joyed but for now it seems that the first 10 percent will have to be sacrificed, before I rooted my phone I got almost 18 hours out of my batt using juice defender I'm hoping for similar or better scores but I can't complain too much with the performance now
Sent from my PC36100 using XDA App
joemaldo said:
Thanks for the info guys, I just flashed a different kernal and did some set CPU clocking tweaks that have made me over joyed but for now it seems that the first 10 percent will have to be sacrificed, before I rooted my phone I got almost 18 hours out of my batt using juice defender I'm hoping for similar or better scores but I can't complain too much with the performance now
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
Easiest way to fix the instant drain is to unplug your phone when it has a full charge. Let it drop to around 92 percent <---My personal preference or you can wait about fifteen minutes. Plug your phone back in and wait for the led to turn green and unplug it right after it turns green. BOOM! All problems solved!
Good humor man....
If your phone was at 100% for a period of time, you would feel more at ease about using it. That would bring about three things.
First increased network usage. Secondly increased phone position among its competitors because of one. Thirdly an increased consumption of batteries, since batteries are based on a chemical reaction which is limited by design. You don't have to be a rocket scientist to understand it. Go to a university chemistry department and they will point you in the right direction. No flashing of internet credentials.
So you want a solution? You can't handle a solution.
Why not give this a shot http://forum.xda-developers.com/showthread.php?t=701567
I recently got into rooting and flashing at the end of last year. This site has been a great resource for how to's and learning about the ins and outs of phone hacking.
Anyways, here's the background info: rooted using Unrevoked Forever, s-off, stayed with stock ROM and kernel only using SetCPU profiles. When I was on stock software, I had unbelievable battery life. I'm a light user (~10% awake time) and rarely beat on the battery -- light calling, email, texting, Facebook, random messing around etc. Anyways, when 3.70.651.1 came out, I knew that was my chance to flash my first ROM.
I flashed SprintLovers and got decent battery life, but nothing compared to when I was running the stock ROM. I then tried almost every variation of Netarchy's non-SBC's CFS 4.3.4 kernels -- more HAVS, less and no HAVS. No dice. I've tried with and without setCPU altogether, along with and without setCPU profiles but using the smartass and conservative governor. I always set the processor to 245-998 and never overclock.
I liked myn's Warm TwoPointTwo, so I recently tried that last week. Again, I'm getting okay battery life (~1.5 days) but with the usage I'm at I'm pretty sure I should be able to get 2 days easy. So I tried flashing Netarchy's 4.3.4 non-SBC CFS kernels with the same results. I've also tried with and without setCPU, along with and without setCPU profiles. Finally, I gave up and I'm currently using Netarchy's 4.2.1 cfs havs more smartass and using setCPU.
It's definitely not related to PRI 1.90 as I'm not getting the 100% partial wake time in Spare Parts, and I know the consensus is divided as to whether or not setCPU interferes with HAVS. I know all phones are different and ROMs and kernels interact differently on an individual basis, but I would really like to stick with myn's ROM and a good kernel to max my battery life. rather than go back to the stock ROM. Any suggestions on extending my battery life before I shamefully reflash back to stock software? I always do a full data/cache/dalvik before flashing a ROM, and wipe cache/dalvik before kernels.
myn's warm TwoPointTwo RLS5
netarchy-toastmod-4.2.1-cfs-bfq-havs-more-smartass
PRI and NV 1.90
setCPU 245-998 conservative
setCPU profiles:
temp >50*C = 245-499 powersave priority 100
screen off = 245-384 conservative priority 98
charging AC = 245-998 smartass priority 96
charging USB = 245-998 smartass priority 94
Try recalibrating the battery. Charge to 100% and leave it on the charger a little longer. Then turn the phone off and boot into recovery. In recovery wipe battery stats - in Amon Ra it's under the wipe menu. Boot back up & use the phone normally until the battery drains completely, without charging the phone at all. Some people say until the phone turns off on its own, but I'd try to avoid that. Just get it as low as you can. Then once it's dead, charge it fully without breaking the charge until it's completely full. You should see an increase in life after that. There's also an app in the market that clears your battery stats. I believe it's called "Battery Calibration", but I could be wrong about the name.
Since you don't use your phone much you'd be a good candidate for undervolting. If you don't want to undervolt while the phone is in use, just use a screen off profile only. Turning radios off while you don't have a signal or you aren't using them will make a huge difference as well. Let us know how it goes
plainjane said:
Try recalibrating the battery. Charge to 100% and leave it on the charger a little longer. Then turn the phone off and boot into recovery. In recovery wipe battery stats - in Amon Ra it's under the wipe menu. Boot back up & use the phone normally until the battery drains completely, without charging the phone at all. Some people say until the phone turns off on its own, but I'd try to avoid that. Just get it as low as you can. Then once it's dead, charge it fully without breaking the charge until it's completely full. You should see an increase in life after that. There's also an app in the market that clears your battery stats. I believe it's called "Battery Calibration", but I could be wrong about the name.
Since you don't use your phone much you'd be a good candidate for undervolting. If you don't want to undervolt while the phone is in use, just use a screen off profile only. Turning radios off while you don't have a signal or you aren't using them will make a huge difference as well. Let us know how it goes
Click to expand...
Click to collapse
I've heard people recommending a battery calibration after flashing a new ROM. My battery has seemed to be jumping down a few %ages and then stabilizing for long periods of time at a single level. Perhaps this is what I'm missing. I'll give it a try tonight when I recharge and see if that helps. I may try undervolting, but seeing as I got great usage on the stock ROM with the same CPU range I'd like to stick with 248-998. I always have a screen off profile though (as noted in my first post). I've also heard about people shutting off radios and such but I don't think I'd want to take it to that extreme -- maybe if I get desperate enough to eek out that much juice I'll give it a shot.
Bonus: to alleviate my problems at home since I have terrible reception and I know that eats the battery, Sprint is shipping me an Airave free of charge! In the process of trying to contact Sprint's CS (*2 on the dialer), the phone was force closing *1 and *3 work fine, as does normally dialing so I guess the problem is only limited to *2 (I even rebooted and am too lazy to reflash just because I can't speed dial a number I rarely call). Hopefully with your suggestion, I can get back to insane battery life
Don't know if this will help you out at all, but here's my setup...
myn's Warm TwoPointTwo (RLS5)
Net's toastmod-4.3.4-cfs-havs-more-sbc
Launcher Pro Plus
SetCPU:
Screen Off: 128 max, 128 min conservative
Battery<101%: 499 max, 128 min conservative
MinFreeManager:
Set to Aggressive
Twitter, Flikr, and assorted useless (to me anyway) apps frozen with Titanium Backup
Unplugged at 0700 and as of 2205, my Seidio extended 3500 battery is STILL at 74%
Average usage day, with tons of emails, and SMS/MMS messages. About 2 hours of web surfing and 3 hours of Pandora, but not a lot of phone calls today though. About 7 hours spent on WiFi, the rest on 3G (No reliable/stable 4G near me yet).
Background data off
Auto-sync off
Enable always-on mobile data off
I have noticed this is the best battery kernel I have tried out of all of Netarchy's (ymmv). I've had this kernel for 2 weeks, and getting 2 days out of it with HEAVY usage is no problem. I only lost 4% of the battery from 2300 last night to 0700 this morning with the phone sitting on my nightstand.
It seemed to not last as long at first until I wiped battery data and started from scratch. Always a good idea to wipe battery data when swapping ROM's and kernels I notice. Also read (here, of course) that new kernels have a "break in" time of a few charging cycles until they settle in.
Overall:
Completely satisfied with this setup. ROM is lightning fast, and battery is a non-issue with this kernel. Only ever so slightly laggy when opening Handcent or galleries (when I add pics and albums have to rebuild the thumbnails), but what the hell, it's only running 499mHz! Even fired up Avatar from my SD to check for stuttering, clipping, or audio lag. There were none!
Jack
OH!!!
Almost forgot!
I stumbled across this "trick" a while ago. Not sure if it ACTUALLY works, but at least to me it does.
It's called "Super Charging" your battery.
Charge with phone on until green light signifying charging is complete comes on
Disconnect charger
Shut off phone
Reconnect charger
Amber charging light will come
When amber changes to green, disconnect charger
When Green shuts off, reconnect charger.
Repeat process
I was bored this weekend, and did it for 4 hours continuously. Yeah, that is truly bored!
I had charged it so much that upon disconnecting the charger, waiting for the green light to go off, then reconnecting the charger, there was NO amber light. Straight to green. Tried it a few more times, with the same result.
Did it actually "supercharge" the battery? Who knows?
Did it take 3 1/2 days of use to break the 25% remaining mark? Yes it did!
So if you are bored, I mean CRAZY bored, what the hell! Give it a shot...
zx7rou812 said:
OH!!!
Almost forgot!
I stumbled across this "trick" a while ago. Not sure if it ACTUALLY works, but at least to me it does.
It's called "Super Charging" your battery.
Charge with phone on until green light signifying charging is complete comes on
Disconnect charger
Shut off phone
Reconnect charger
Amber charging light will come
When amber changes to green, disconnect charger
When Green shuts off, reconnect charger.
Repeat process
I was bored this weekend, and did it for 4 hours continuously. Yeah, that is truly bored!
I had charged it so much that upon disconnecting the charger, waiting for the green light to go off, then reconnecting the charger, there was NO amber light. Straight to green. Tried it a few more times, with the same result.
Did it actually "supercharge" the battery? Who knows?
Did it take 3 1/2 days of use to break the 25% remaining mark? Yes it did!
So if you are bored, I mean CRAZY bored, what the hell! Give it a shot...
Click to expand...
Click to collapse
I always wondered if you did that enough, would it eventually get to the point that the light went right to green
zx7rou812 said:
Don't know if this will help you out at all, but here's my setup...
Click to expand...
Click to collapse
Thanks, but not willing to step into the realm of SBC kernels. However, I will try to go through a few charging cycles to see if my current NA kernel just needs to get broken in. I've also tried the charging method you stated above and while I did get good results, I'm unsure as to whether or not this is overcharging the phone so I decided not to do it again.
Anyways, I wiped batt stats last night after getting the full charge, so still on the drain and need to recharge to 100%; will report back after I go through a few cycles of charging.
Why not an SBC?? Because it fully charges your battery closer to 100% than a non-SBC?/
And don't buy into the hype of exploding batteries. That was handful of cases, that a) were all reported in the earliest days of SBC development, none since and were never fully attributed to the SBC kernel.
Also, you people that say drain til it dies, you DO realize that HTC STRONGLY recommends NOT doing that. According to HTC, you shouldn't recharge until you get below 50%, and no, I'm not gonna go look for the links, use the search feature.
I have a good method in my signature. Give it a try.
HipKat said:
Why not an SBC?? Because it fully charges your battery closer to 100% than a non-SBC?/
And don't buy into the hype of exploding batteries. That was handful of cases, that a) were all reported in the earliest days of SBC development, none since and were never fully attributed to the SBC kernel.
Click to expand...
Click to collapse
QFT
Can't argue with a battery that stays at 100% for 3+ hours then slowly drains versus unplugging it at 100%, blinking twice, and seeing 90% remaining...
HipKat said:
Why not an SBC?? Because it fully charges your battery closer to 100% than a non-SBC?/
And don't buy into the hype of exploding batteries. That was handful of cases, that a) were all reported in the earliest days of SBC development, none since and were never fully attributed to the SBC kernel.
Also, you people that say drain til it dies, you DO realize that HTC STRONGLY recommends NOT doing that. According to HTC, you shouldn't recharge until you get below 50%, and no, I'm not gonna go look for the links, use the search feature.
I have a good method in my signature. Give it a try.
Click to expand...
Click to collapse
Well, I'm no developer but if Netarchy says to beware in his latest kernel thread, even if for liability reasons, then that's good enough for me to stick with non-SBC until an SBC kernel is proven to be 100% safe. I think that's a perfectly valid justification to not use SBC for now.
I keep forgetting that we're not supposed to completely drain the battery. I guess I'll recharge when I hit 5 or 10%.
I'll take a look at your thread when I get a chance.
twinsin said:
Well, I'm no developer but if Netarchy says to beware in his latest kernel thread, even if for liability reasons, then that's good enough for me to stick with non-SBC until an SBC kernel is proven to be 100% safe. I think that's a perfectly valid justification to not use SBC for now.
I keep forgetting that we're not supposed to completely drain the battery. I guess I'll recharge when I hit 5 or 10%.
I'll take a look at your thread when I get a chance.
Click to expand...
Click to collapse
All threads (for the most part) say that, even ROM threads about not being liable if anything happens to your phone. Not even flashing a ROM is 100% safe but you do it anyway.
I've been using SBC since it was being tested the first time and I've never had one issue. No batteries have exploded, no chargers bursting into flames, and no phones have self-destructed.
If you want really good battery life, good performance, and want to try something other than Sense, CM7 and MIUI are really good ROMs. I would recommend Tiamat kernel (use 3.3.8 for now, 4.0.0 has some issues) and make sure to wipe batt stats and do a battery calibration. For good measure, you can try my BSM mod in my sig for even better battery life.
kings kernels are awesome!! im using one and is giving me 30 hrs!
valdovic said:
kings kernels are awesome!! im using one and is giving me 30 hrs!
Click to expand...
Click to collapse
He doesn't support the EVO anymore, to my knowledge.
-viperboy- said:
All threads (for the most part) say that, even ROM threads about not being liable if anything happens to your phone. Not even flashing a ROM is 100% safe but you do it anyway.
I've been using SBC since it was being tested the first time and I've never had one issue. No batteries have exploded, no chargers bursting into flames, and no phones have self-destructed.
If you want really good battery life, good performance, and want to try something other than Sense, CM7 and MIUI are really good ROMs. I would recommend Tiamat kernel (use 3.3.8 for now, 4.0.0 has some issues) and make sure to wipe batt stats and do a battery calibration. For good measure, you can try my BSM mod in my sig for even better battery life.
Click to expand...
Click to collapse
Yes, all threads use the release of liability clause, but NA specifically states in his most recent thread that SBC could potentially cause problems.
Gosh, so much peer pressure! I'm not saying I won't ever go to SBC, just when I feel like it's a bit more stable and all the kinks are worked out. Kind of like you probably shouldn't buy the first model year of a car since the chances of running into glitches is much higher than if you waited a bit for the bumps to get smoothed out. If I'm being paranoid -- well, it's all in the interest of my $200+ phone. Regardless, I appreciate all the replies.
I've heard about MIUI here and there. I guess I've stuck with Sense since that's all I've ever known, but maybe I'll start branching out to AOSP and MIUI. Does CM7 have full functionality now on the EVO?
I'm on my first recharge since wiping stats and it's the fastest recharge I've ever seen. Maybe I do need to just break the kernel in?
I'm a new Epic owner, still learning the quirks of this phone. I am having issues with my battery giving me a proper charge. I need a reliable GPS for a 3,000 mile road trip coming up, and this phone is all I got... so it needs to work. My issue is that the phone never seems to know how much battery it really has, and often appears to loose battery even while charging, but I'm not convinced that it actually is. So I did a little test. Went on a 15 drive, everything off except for GPS. Played music through the phone, and had the nav up the whole time, with the phone charging.
Started at 70% battery. After getting to my destination in 15 minutes, I was at 64%.
I rebooted my phone, and when it came back up, the battery was at 24%. I did some shopping, and texted my wife pretty much the whole time, phone stayed at 24% for the entire trip.
Rebooted again when I got back to the car, and it jumped up to 36%. Same deal on the ride home, music + nav up for a 15 minute ride. It was still at 36% percent this time when I got home.
So, what's with all the inconsistency here? Is this normal? Should I get a new battery? I'm running SFR 1.2 with Genocide kernel, 200-1000 conservative, and everything undervolted slightly.
Have you tried fully charging your battery and wiping the battery stats through Clockworks? Also I'll have to do some digging but if I remember correctly the reboot thing is a known bug. I believe they said it has something to do with the reboot script. I'll see if I can dig up the link for ya.
MustangMan9498 said:
Have you tried fully charging your battery and wiping the battery stats through Clockworks? Also I'll have to do some digging but if I remember correctly the reboot thing is a known bug. I believe they said it has something to do with the reboot script. I'll see if I can dig up the link for ya.
Click to expand...
Click to collapse
I've wiped battery stats between flashes, but not recently, and not on a full charge. I will try this.
Let us know how it goes, so I can try it.
Well after doing that, my battery life yesterday was probably the longest it's ever been with this phone. Next time I go out, I'll throw it on the car charger again and see if it still drains while using it.
Yeah the proper way to calibrate it is by charging it fully first after a successful flash and then wiping the stats. I usually do a full charge with it on then turn it off and wait til it fully charges again (led turns blue) then boot into CWM and wipe its stats.
No luck, tried it out yesterday and got the same thing... battery drains while on the car charger (tried two chargers). Also get the jumps in % when rebooting, but only sometimes.
I ordered an extended battery for now, hopefully it will do the trick to get me through my move.
It's not an answer likely to make you happy, but the type of car charger you use and the car's electrical output are a factor here. I have personally seen a large difference in recharge time and ability depending on those factors. It may be worth your while to gamble on another $15-30 for a well-reviewed charger. It's definitely made a difference for me.
DroidApprentice said:
It's not an answer likely to make you happy, but the type of car charger you use and the car's electrical output are a factor here. I have personally seen a large difference in recharge time and ability depending on those factors. It may be worth your while to gamble on another $15-30 for a well-reviewed charger. It's definitely made a difference for me.
Click to expand...
Click to collapse
That's what I did. I had a cheap charger, and it didn't work well so I dropped $20 on a Griffin one, and it was no better. I never had a problem keeping my HD2 or Nexus S 4G.
Also, just for ****s, had the phone on a wall charger and made sure to keep the screen alive texting and playing WF... slowly but surely the battery drained while on the charger. So, not my car either. Seems like the screen being on absolutely murders my battery.
Sounds like a pretty scientific review, so that result sucks. However I would actually now throw some suspicion on your battery and/or phone itself. Reason I say so is that I am a heavy phone user at my office and also have screen awake and a lot of use for music and video playing and 4G audio streaming while on wall charger, and consistently get into the upper 90s or full charge while using it so much. See if Sprint will throw a new battery your way, and maybe that will help?
DroidApprentice said:
Sounds like a pretty scientific review, so that result sucks. However I would actually now throw some suspicion on your battery and/or phone itself. Reason I say so is that I am a heavy phone user at my office and also have screen awake and a lot of use for music and video playing and 4G audio streaming while on wall charger, and consistently get into the upper 90s or full charge while using it so much. See if Sprint will throw a new battery your way, and maybe that will help?
Click to expand...
Click to collapse
We'll see how the extended battery I ordered does.
I didn't get the phone subsidized through Sprint, so it has no warranty. I doubt they would help me.
Download Spareparts and see if there are any processes hogging the system, especially in the partial wake lock list. It very well could be a faulty battery although I can't recall anyone ever having a battery issue on this board.
stir fry a lot said:
Download Spareparts and see if there are any processes hogging the system, especially in the partial wake lock list. It very well could be a faulty battery although I can't recall anyone ever having a battery issue on this board.
Click to expand...
Click to collapse
Nope, doesn't look like it.
BTW, I am running rooted stock EC05, no other mods except some frozen apps and Roam Control. I wouldn't wager that necessarily makes the difference, but you never know.
Try a different kernel?
You may want to start fresh and Odin back to stock and reroot.
stir fry a lot said:
Try a different kernel?
You may want to start fresh and Odin back to stock and reroot.
Click to expand...
Click to collapse
I experienced this on both the kernel that comes with SFR, and Genocide.
I may go back to a rooted stock... but I have been really happy with every other aspect of this rom.
You might want to Odin and start over. The only thing I can think of is maybe something is wonky with the modem or something.
stir fry a lot said:
You might want to Odin and start over. The only thing I can think of is maybe something is wonky with the modem or something.
Click to expand...
Click to collapse
I have one more thing to try first.
I've been using Launcher 7. There are lots of complaints about this being a battery hog. Going to give things a shot with ADW and see how I do.
Never heard of Launcher 7. I've seen ADW on the Market, but never tried it. I've used TouchWiz when I first got my phone, but lost it when I rooted with SFR. I am using LauncherPro right now, so try that one.
Also, I read that GPS is a major battery drain for smartphone. I never had a problem using GPS on my Exclaim, so maybe its the GPS drinking up a lot of the battery fluid?
Tbh, you should not worry if your vehicle has an adapter (either itself or cig lighter) and plug it in when the battery goes low.
ThunderOKC said:
Never heard of Launcher 7. I've seen ADW on the Market, but never tried it. I've used TouchWiz when I first got my phone, but lost it when I rooted with SFR. I am using LauncherPro right now, so try that one.
Also, I read that GPS is a major battery drain for smartphone. I never had a problem using GPS on my Exclaim, so maybe its the GPS drinking up a lot of the battery fluid?
Tbh, you should not worry if your vehicle has an adapter (either itself or cig lighter) and plug it in when the battery goes low.
Click to expand...
Click to collapse
Launcher 7 mimics WP7. I'm all for a clean, simple look, and as such, really like it. But its a CPU hog.
ADW is wonderful, and for most of my time with android its all i've used. I've got the paid version. Went ahead and installed it, and so far, so good. Setting it up with my phone on a charger, and my battery is finally going in the right direction while using the phone
I'll go for a drive somewhere tomorrow and see if it charges in the car while running ADW.