Develop Bugs

May be a noob battery question

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
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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

better battery life

I've been using CyanogenMOD 7 and love it (mostly). The one thing I don’t like about it is the short battery life. I'm kind of new to rooting phones so it took me a bit to get it rooted and get CM7 rolling. I was wondering if there are any mods out there like CM7 that have better battery life? Or if there's any thing I can add to CM7 to give it more batter life?
I've been using android since the first phone came out so I’m already knowledgeable in what to turn off to try and extend the battery life, but I have noticed a big decrees in batter since installing CM7.
Thanks for the help guys
Trench

You can under clock the processor when your phone is asleep. This creates better battery life.
Sent from my HTC Vision using XDA App

Have you tried wiping battery stats?

evilcuber said:
You can under clock the processor when your phone is asleep. This creates better battery life.
Sent from my HTC Vision using XDA App
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your phone automatically underclocks your processor when it sleeps (for most CPU governors), you do not need to tell it to do so.
I'm not picking on you fyi, I'm just making sure we are giving people accurate information... there's only one thing worse than no information: incorrect/incomplete information.
op: which version of CM7 are you running? remember, the more minimal your setup (ie less homescreens, less widgets, manual syncing of gmail and whatever else, etc) the better your battery life will be. this is especially true of newer phones that are getting heftier cpu & gpus that, while intelligent with power consumption, are going to drain even larger capacity batteries relatively quick with moderate/heavy usage.
how long are we talking with battery life? how heavy a user are you? for reference, I get around 16 hours of battery life if I don't charge the phone at all from unplugging to battery dying with moderate to heavy usage (texting ~50 times a day, sometimes up to 100 emails depending on what's happening at work, couple hours of calls, couple hours of streaming music [pandora or audiogalaxy], couple of hours of games [peggle and plants v zombies mostly - both of which are resource hogs], etc).
I have just learned to get used to the fact that the phone is going to die if I use it a lot, so I've purchased three micro-usb cables and a car charger.. that way, unless I'm in an area where there is no charge-capable usb port nearby, I'm always able to get a little more juice if need be.

pmcqueen said:
your phone automatically underclocks your processor when it sleeps (for most CPU governors), you do not need to tell it to do so.
I'm not picking on you fyi, I'm just making sure we are giving people accurate information... there's only one thing worse than no information: incorrect/incomplete information.
op: which version of CM7 are you running? remember, the more minimal your setup (ie less homescreens, less widgets, manual syncing of gmail and whatever else, etc) the better your battery life will be. this is especially true of newer phones that are getting heftier cpu & gpus that, while intelligent with power consumption, are going to drain even larger capacity batteries relatively quick with moderate/heavy usage.
how long are we talking with battery life? how heavy a user are you? for reference, I get around 16 hours of battery life if I don't charge the phone at all from unplugging to battery dying with moderate to heavy usage (texting ~50 times a day, sometimes up to 100 emails depending on what's happening at work, couple hours of calls, couple hours of streaming music [pandora or audiogalaxy], couple of hours of games [peggle and plants v zombies mostly - both of which are resource hogs], etc).
I have just learned to get used to the fact that the phone is going to die if I use it a lot, so I've purchased three micro-usb cables and a car charger.. that way, unless I'm in an area where there is no charge-capable usb port nearby, I'm always able to get a little more juice if need be.
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but i also mean setting the max sleep to 368mhz. by default its set at 800mhz. sometimes with apps running in the background, the processor may go to 800mhz without you knowing

check out 'powersave' and set your cpu max to 806mhz. should last you a nice long time like that. responsiveness suffers, of course.
'ondemand' and 806mhz is the best comprimise for me. still fine with HDvideo recording, streaming audio, Nav, etc
if you really want to make it last... clock down to 400mhz, turn off all the sync, set brightness and timeout to minimum, all the radios off (airplane mode), and the volume down, on vibrate.
;-)

pmcqueen said:
your phone automatically underclocks your processor when it sleeps (for most CPU governors), you do not need to tell it to do so.
I'm not picking on you fyi, I'm just making sure we are giving people accurate information... there's only one thing worse than no information: incorrect/incomplete information.
op: which version of CM7 are you running? remember, the more minimal your setup (ie less homescreens, less widgets, manual syncing of gmail and whatever else, etc) the better your battery life will be. this is especially true of newer phones that are getting heftier cpu & gpus that, while intelligent with power consumption, are going to drain even larger capacity batteries relatively quick with moderate/heavy usage.
how long are we talking with battery life? how heavy a user are you? for reference, I get around 16 hours of battery life if I don't charge the phone at all from unplugging to battery dying with moderate to heavy usage (texting ~50 times a day, sometimes up to 100 emails depending on what's happening at work, couple hours of calls, couple hours of streaming music [pandora or audiogalaxy], couple of hours of games [peggle and plants v zombies mostly - both of which are resource hogs], etc).
I have just learned to get used to the fact that the phone is going to die if I use it a lot, so I've purchased three micro-usb cables and a car charger.. that way, unless I'm in an area where there is no charge-capable usb port nearby, I'm always able to get a little more juice if need be.
Click to expand...
Click to collapse
But some govenors don't drop the sleep to the lowest profile. In fact almost all keep it above the lowest clock. Other kernels allow it and you can also use third party to set it lower. When the tweaKr script becomes universal it will be even better =)
Sent from hells ghost chili mexdroid

ohgood said:
check out 'powersave' and set your cpu max to 806mhz. should last you a nice long time like that. responsiveness suffers, of course.
'ondemand' and 806mhz is the best comprimise for me. still fine with HDvideo recording, streaming audio, Nav, etc
if you really want to make it last... clock down to 400mhz, turn off all the sync, set brightness and timeout to minimum, all the radios off (airplane mode), and the volume down, on vibrate.
;-)
Click to expand...
Click to collapse
It suffers in powersave because it stays at the lowest setting only. No reason to set to 806. Lol and that bottom comment is hella funny =), but if he does that his phone will just be...a waste of pocket space.
Your best bet is to do some research on kernels. If you are using cm7 to cm 7.0.3 id recommened pyros kernel. If you are on 7.1 or a nightly over 121 I believe id go with eugene's streamline5. It did wonders for mine Also there is a battery saving tips. Google G2 battery saving tips. Should be first link that comes up.
Cyanogenmod roms are known to be battery hungry. Nom nom nom.
Sent from hells ghost chili mexdroid

cjward23 said:
Have you tried wiping battery stats?
Click to expand...
Click to collapse
I used the battery califration app if that's what you mean.
Thanks for all the help guys, i'll check out some Kernals.

popimp315 said:
Your best bet is to do some research on kernels. If you are using cm7 to cm 7.0.3 id recommened pyros kernel.
Click to expand...
Click to collapse
Do you have link for this? I'm running 7.0.3.. but I dont think im finding the correct Kernal.

Mugen 3600mah = better battery life...

Can you elaborate on what kind of battery life you are getting now? How many hours, and for what level of usage?
How long have you been on CM? It takes a couple charge cycles of the battery after flash any ROM, for the battery meter to be accurate. Clear battery stats (as mentioned) then charge to 100%, let drain to about 20%, repeat a couple times. Don't drain until the phone dies. Some people say to do this, and its not good advice. Over discharge of Li ion batteries can cause them to no longer take a charge. There are people on here, on the Vision and other phones, that let their battery drain to empty, then the phone would no longer boot, forcing them to replace the battery.

Mog said:
Mugen 3600mah = better battery life...
Click to expand...
Click to collapse
It has good battery life but the battery sticks out a lot and its very uncomfortable
Sent from my HTC Vision using XDA App

evilcuber said:
It has good battery life but the battery sticks out a lot and its very uncomfortable
Sent from my HTC Vision using XDA App
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Yup its all opinionated. I would never go back to stock.
Sent from my T-Mobile G2 using XDA App

trench619 said:
Do you have link for this? I'm running 7.0.3.. but I dont think im finding the correct Kernal.
Click to expand...
Click to collapse
Dev section
Sent from my HTC Vision using XDA Premium App

How's your battery life with low-med usage?

I'm getting some really good battery life with light usage so far.
1d 3h 33m
Edit

I m getting similar results, light usage I unplug at 7am and plug back in at 1am with ~50% battery left.

This screenshot doesnt say much, tap at the graph - that the screen to show off

WIFI seems to be much better. With my LTE on I can barely charge the phone LOL. I wouldn't trade 20 Mbps down for bettery life.

I'd say my experience has been the opposite of what's been reported. With low to medium usage, I'm lucky to get 8 hours. I don't think I'm doing anything wrong. I use setCPU to put my phone in battery saving mode and underclocked all the way when the screen's off. I kill apps whenever I notice a lot are running. I dunno. Coming from an iphone, I'd say my battery life has been horrible.
Sent from my LG-P930 using Tapatalk

I am surprised. I actually stopped worrying about baterry few weeks ago. I can definitely get through the day with no problem.
Sent from my LG-P930 using Tapatalk

Malnilion said:
I'd say my experience has been the opposite of what's been reported. With low to medium usage, I'm lucky to get 8 hours. I don't think I'm doing anything wrong. I use setCPU to put my phone in battery saving mode and overclocked all the way when the screen's off. I kill apps whenever I notice a lot are running. I dunno. Coming from an iphone, I'd say my battery life has been horrible.
Sent from my LG-P930 using Tapatalk
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Click to collapse
I've never been an iPhone fan, but since the iPhone 4 the battery has been phenomenal. Battery life is constantly improving on Android phones, but it seems like every time something new is introduced it gets significantly worse. The 720p screen and LTE radio don't seem to be helping the battery cause. In the Nitro's defense, I haven't carried it an entire day to see how it works out for me. My Inspire could charge completely in about 2 hours, this phone will have changed less than 50%. But I have 20 Mbps download!!!

Malnilion said:
I'd say my experience has been the opposite of what's been reported. With low to medium usage, I'm lucky to get 8 hours. I don't think I'm doing anything wrong. I use setCPU to put my phone in battery saving mode and overclocked all the way when the screen's off. I kill apps whenever I notice a lot are running. I dunno. Coming from an iphone, I'd say my battery life has been horrible.
Sent from my LG-P930 using Tapatalk
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Click to collapse
This is interesting since I don't kill apps, I don't use setcpu, and have only done minimal debloating. I do have pretty decent signal at my workplace (which is 4G, not LTE) which does make a big difference.

gte460z said:
This is interesting since I don't kill apps, I don't use setcpu
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Click to collapse
I wonder if it's the point? Maybe codeaurora just knows better how to undervolt SoC than setcpu does, just maybe? If Malnilion only tried to stop using setcpu could it made any difference?

Well, I'll be damned. setCPU was the problem. My battery life is lasting much longer now. With medium usage I'm at about 15 hours on a charge and have 7% left. If anybody is having a problem and is using setCPU, don't take my word for it, uninstall setCPU and see for yourself.
Sent from my LG-P930 using Tapatalk

Malnilion said:
Well, I'll be damned. setCPU was the problem. My battery life is lasting much longer now. With medium usage I'm at about 15 hours on a charge and have 7% left. If anybody is having a problem and is using setCPU, don't take my word for it, uninstall setCPU and see for yourself.
Sent from my LG-P930 using Tapatalk
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Click to collapse
my experience has been the same using setcpu on my nitro. not sure if there was a sw conflict or if the stock sw simply does the job better but this phone runs much better without setcpu.
That being said, I am currently running JD ultimate and have its cpu gov running and it works much better imo.

How about charging your phones? My phone charges like 15% after an hour. Any tips to make it faster? Should I take it back to AT&T and get a replacement?

dbjungle said:
How about charging your phones? My phone charges like 15% after an hour. Any tips to make it faster? Should I take it back to AT&T and get a replacement?
Click to expand...
Click to collapse
If you're using a USB port to charge that could be why it's so slow.
Edit: I am too, I'd say it's around 3 hours or so per full charge. Maybe slightly longer.

bmxant said:
If you're using a USB port to charge that could be why it's so slow.
Edit: I am too, I'd say it's around 3 hours or so per full charge. Maybe slightly longer.
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Click to collapse
Good point. Now that you mention it, it does appear to charge faster when plugged into the wall. Well that kind of sucks. This thing takes forever to charge. I'll try with a wall adapter when I am home again and let you know what I find out.
It's kind of hard to always have a wall charger with me though.

It is not blackberry crazy short timing charges but I can charge it less than 2 hours from around 20% left using stock 1.5 amp wall charger. It definitely does not charge long.
Sent from my LG-P930 using Tapatalk

Wall charger made a huge difference. Charged about 55% in an hour. Thanks for the tip.
Sent from my LG-P930 using xda premium

Am I correct to assume that the 2.1amp car charger would charge better/faster than the 1.5amp wall charger? I ask because with the wall charger I still consume power faster than the charger can keep up while watching SlingPlayer mobile.

Probably so, this phone is a battery draining beast. Every review I've read says LTE phones have terrible battery life. LG should have had an option to disable it and 3G. Oh well, I'll live with it while streaming on my 22 Mbps DL connection.
Sent from my LG-P930 using xda premium

That's just it though... I'm not on LTE while using SlingPlayer. I'm on 4G out in the field. My car charger doesn't say what it is, but I assume it's 1.5amp. I download "Advanced Task Killer" app, but everything I "kill" comes right back up. I think there's too much crap running and sucking down the battery. I really need to figure out how to root and freeze bloatware crap.

theoski said:
I am surprised. I actually stopped worrying about baterry few weeks ago. I can definitely get through the day with no problem.
Sent from my LG-P930 using Tapatalk
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Click to collapse
Same here. Battery life was a concern for me when I was first considering the phone. But I found that I can go a full day on a single charge. so I don't even worry about it anymore.

How are people getting such great battery life?

Ive got the htc 2150 extended battery, im running cyanogenmod 7.1 with the latest incredikernel. People say 2 days with sense roms? I need to charge my phone every night?
Sent from my ADR6300 using xda premium

It really depends on how you use your phone. I can go for up to three days on my phone with light use. I can also go for less than a day when I have the screen on all the time.

This is entirely subjective as Ralph0015 says. Factors like signal strength, wifi vs. 3g use, display brightness, and seemingly an endless list of factors may affect battery life. With the exception of significantly altering/limiting your use or purchasing the larger extended battery, I wouldn't focus on it too much.

Using the phone moderately and saving battery is tough unless you start messing with the CPU. Setcpu can help by setting profiles for certain states charge/screen off etc.
This is a decent write-up for underclocking the processor with setcpu. It is aittle dated but still helps
http://forum.xda-developers.com/showthread.php?t=721156
Sent from my ADR6300 using XDA App

yeah it totally depends how you use it. Most of the time I'll end the day with ~50% left, but if I'm trying to save I've gone 4-5 days before (camping trip with no outlet).
This is with the 2150 battery.

[Q] [q] Is this what a dying battery looks like?

I noticed when I was looking at battery stats (trying to figure out what's eating the battery; very little in the way of apps installed)
I bought the phone last week, but I bought it used on eBay. It came with the original box and the manufacture date is 6/30/12, so I figure this was someone's everyday device for 10 months.
The reason I ask is that sudden dip from 20 to 30%. And the other reason I ask is that I only get about 10 hours with 3 hours of screen-on time on a full charge. If the battery is just losing capacity, that's fine - I'll get a ZeroLemon 2300maH battery and I should get much better life. If the battery still has close to full capacity, then I'll get an extended-capacity battery. I just need some guidance as to whether or not it's crapping out so I have a better idea of what to buy.
Thanks!

Jump is weird. Could be the battery is flaky. But I would make effort to reseat it. I want to see what BetterBatteryStats says about that terrible wakelocking, though.
You can delete batterystats.bin from /data/system. Everyone says it does nothing. But I do it anyway. Because I can.

My stock battery usually gives me 7-8hrs of standby and 3hrs of screen time.
Zerolemon 2300mah gives me 20hrs of standby and usually 5hrs of screen time.
You can check in the accessories section in the zerolemon 2300mah that I've posted some of my results via screenshots.
About the dip, I'm not sure I've never noticed that on any of my batteries.
Sent from my SGH-T999 using xda app-developers app

Jump has been there consistently. Had the phone 4 days, and every day when it hits 30% it drops to 20%.
Installed Betterbatterystats and I'll see what's keeping it awake. It does seem to be awake an awful lot compared to my old Atrix (switched to T-Mobile a month or so ago, and just got the phone after I was switched for a bit), which got way better battery life.

10 hours with 3 hours of on screen time is just about average for the stock battery.
I would recommended getting the zero lemon 2300 mAh slim batteries if you're lucky enough to place an order for them. They only restock in small amounts and they disappear quick.
Sent from my SGH-T999 using xda premium

707BeastMode707 said:
10 hours with 3 hours of on screen time is just about average for the stock battery.
I would recommended getting the zero lemon 2300 mAh slim batteries if you're lucky enough to place an order for them. They only restock in small amounts and they disappear quick.
Sent from my SGH-T999 using xda premium
Click to expand...
Click to collapse
Well that's good to know. They're in stock right now on Amazon so I'll pick up the 2-pack with the charger.

OK so far the phone has spent half its time unplugged staying awake, and about half of that is being caused by DeskSMS. I got a trial a long time back and decided not to bother because I didn't use it, and when my google account restored to the phone, it apparently got installed and I didn't notice. I've uninstalled that and we'll see what else happens. Very thankful for the BetterBatteryStats suggestion; I'd never heard of it.

Well the battery is lithium ion. With repeated charging the battery loses capacity. If the battery is the one that came with the phone, buy a new stock one for cheap off Amazon. That is if you use NFC and have a certain fitted case. If not, go for an extended battery by reviews on Amazon and XDA. My battery is from December and I haven't noticed any decrease yet. The temperature of which your phone runs and the temperature of the environment also effect battery life.
Sent from my SGH-T999 running Chihuahua v1 ROM

Great news, everyone. Desk Sms was the culprit all along. This is 3 hours of Netflix and then sleep over night. Just a couple wake locks that I can attribute to emails received overnight.
So out turns out the battery other than the weird drop, at least with the power saver on.
Thanks in particular for the Better Battery Stats suggestion. Without it I would have been majorly confused.
Sent from my SGH-T999 using xda premium

DeerSteak said:
Great news, everyone. Desk Sms was the culprit all along. This is 3 hours of Netflix and then sleep over night. Just a couple wake locks that I can attribute to emails received overnight.
So out turns out the battery other than the weird drop, at least with the power saver on.
Thanks in particular for the Better Battery Stats suggestion. Without it I would have been majorly confused.
Sent from my SGH-T999 using xda premium
Click to expand...
Click to collapse
Glad you were able to get it all figured out. Wakelocks are VERY annoying. Search for kms.apk if Mediaserver is ever draining your battery in the future, it is a common battery draining problem as well.
If you're on TouchWiz using Power Saver, I'd recommend disabling it. It throttles your CPU in half. This may cause instability, or overheating problems or sometimes even battery drain ironically. I do however recommend, KT747 kernel with changing govs, and I/O scheduler and using Team Kernelizer tweaks. Try Eugene's CPUSleeper and it may help put DeskSMS to sleep for good. And how could I forget? Definitely try Greenify. It makes apps behave akin to iOS devices. Best of luck.

TheLastSidekick said:
Glad you were able to get it all figured out. Wakelocks are VERY annoying. Search for kms.apk if Mediaserver is ever draining your battery in the future, it is a common battery draining problem as well.
If you're on TouchWiz using Power Saver, I'd recommend disabling it. It throttles your CPU in half. This may cause instability, or overheating problems or sometimes even battery drain ironically. I do however recommend, KT747 kernel with changing govs, and I/O scheduler and using Team Kernelizer tweaks. Try Eugene's CPUSleeper and it may help put DeskSMS to sleep for good. And how could I forget? Definitely try Greenify. It makes apps behave akin to iOS devices. Best of luck.
Click to expand...
Click to collapse
The problem with Greenify, in this case, is you can't hibernate apps that send notifications, or you will never get them.

The power saver doesn't bother me. Being in the notification area makes it easy to toggle and performance has been fine. Better Battery Stats says it gets up to 1 GHz Mac and that is plenty on the web or Facebook or Netflix.
I had assumed the media server popping up was due to Netflix streaming. It hasn't been back today since recharging. If it comes back I'll look more at disabling. Today battery life has been great. 12 hours with 2 hours of on time and at 45 percent. I definitely over reacted to the drop and it must have been Desk SMS which never should have been installed.
Sent from my SGH-T999 using xda premium

If anyone has any issue with their battery sprint corp stores have a tester takes about ten min. They won't have a problem doing it if you're nice, sprint or not. It will either end up excellent marginal or poor... they don't charge for the test.
tmobile s3 running wicked. best rom i've ever used