[Q] battery life - Kindle Fire Q&A, Help & Troubleshooting

I've rooted my kindle and the battery life is terrible, is this normal? The first night I rooted it, it was fully charged, by morning it was completely dead. I eventually put stock back on it and left it on the charger thru out the day and came home and there was no light on it and I had to hard reset it.
Battery life on a rooted kindle really this bad?
If I revert back to stock, what all do I need to do to get it back to completely stock so it doesn't drain the battery so fast?

1. What ROM were you using?
2. Is WiFi set to be turned off when the kindle is sleeping?
3. Some ROMs have slightly different screen brightness settings, how bright was your screen?
If I were you, I'd charge the kindle overnight until it is 100% (if it doesn't charge to full overnight, you might want to revert to stock, then send it over to Amazon for a replacement. Obviously a hardware-related charging problem).
Then if the battery drains less than an hour of use, or 5 hours without use, (mine lasts around 24 hours without use, 4 hours with Wifi turned on, maybe 6 hours with it turned off), then try a different ROM, like Jandycane for Jellybean, or GedeROM for Ice Cream Sandwich. I've found GedeROM to have extra-good battery life, possibly better than stock.
If all else fails, you can revert to stock.

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[Q] Battery drain...whoa

So i'm currently running CM7 on my incredible. I have been running it for a little over a month with no battery problems. Just recently the battery has been draining crazy fast. I'm saying losing 1% every minute. At first I thought it was my battery so I took the battery from my wife's Dinc to try her's as she has absolutely no battery problems at all. It drained the battery 8% in a matter of 5 minutes!!!
I left my phone on and had it charging all night and in the morning it was still at only 78% charged.
Is there a fix to this? Ideas?
Thanks for the help!
I'm surprised that it wouldn't fully charge over night! Seems like it only takes an hour or two to fully charge my phone (stock battery, cm7, incredikernel). I'd recommend a different kernel that has fast charge at least, might also help your battery life too. Chad's incredikernel or invisiblek are my favorites, both charge very quickly.
Sent from my ADR6300 using XDA App
xusefil321 said:
So i'm currently running CM7 on my incredible. I have been running it for a little over a month with no battery problems. Just recently the battery has been draining crazy fast. I'm saying losing 1% every minute. At first I thought it was my battery so I took the battery from my wife's Dinc to try her's as she has absolutely no battery problems at all. It drained the battery 8% in a matter of 5 minutes!!!
I left my phone on and had it charging all night and in the morning it was still at only 78% charged.
Is there a fix to this? Ideas?
Thanks for the help!
Click to expand...
Click to collapse
Charge your phone until it won't anymore while turned on. Then turn it off and keep charging until the light goes green. Then unplug it, and plug it back in until it goes green again. Then boot into recovery and go to Advanced -> Wipe Battery Stats. Reboot your phone and let the battery drain to 0% (don't plug it in at all until it's at 0%, it's relearning all the charge points and whatnot). Then plug it in and charge it all the way up again.
I hope this solves your problem!
What's your CPU utilization look like? If something is pegging your processor, the battery will run down pretty fast.
cvbcbcmv said:
that's really weird. I got great BL on cm7. And I get comparable with a sense 2.1/3.0 rom which makes me very happy. I have a 1500mah battery, but I just got it recently and I got great BL with stock. But it's great because it came with 2 bats and a bat charger, so I just keep one on the charger and if I run low for whatever reason, I just swap the battery. And unlike a lot of battery chargers, when it gets full it doesn't start to drain, it keeps it at 100%.
Click to expand...
Click to collapse
I WAS getting great battery life. all of a sudden the phone had shut off one day and wouldn't go back on unless I took the battery out and put it back in. Since then the battery life has been just crap. I tried resetting the battery points and nothing happened. I think I'm just going to go back to 2.2. I never had any issues with cm7 up until now but something is completely ****ed and I can't do anything to repair it.
ugh.
Check what apps are consuming most of your CPU. If you nothing stands out there it may be worth buying System Panel ($3) for the monitoring capability. There are probably free apps that do the same thing, but I can only recommend what I've tried. Also, if you just recently flashed an over/underclocked kernel or just installed SetCPU, you may be running into Issue 9733, which has a known workaround. If you want any more detailed assistance, you'll have to post more details. Can you post an adb bugreport?
I'm not sure what happened but I decided to just flash a different ROM. I just flashed Kingdom Stock GingerSense 3.0. Works great! I installed all my programs on it just fine and I just tried installing the google apps zip (it has navigation, places, ect) and now I'm getting an error message. UGH! WHY! It didn't install the apps from the zip file and now for a few programs that I had already installed they are no longer there and when I try to install from the market place I get a "Missing Shared Library" error message. I'm trying to install the TD Bank app and Tweetdeck as well as Craigslist and get the errors. I'm not having any problems with anything else.
problem solved!

[Q] Why is my battery losing life, or not displaying correct percentage?

About a month ago, I flashed Gingerbread onto my Epic 4G. Did nothing else, been running the usual BatteryLife by CurveFish without any hiccups or fluctuating readings.
However, recently, I don't seem to be getting a full charge. Or, the battery likes to drain. Either that or BatteryLife is not giving proper readouts anymore. For example, I can plug my phone in and let it charge. Its LED will go blue and the widget shows 100%. But, now, sometimes I'll look at the phone again later (while it's still connected with the charging cord or not) and the widget will read something like 82%. And, just now the widget is now showing 78%.
My battery has been fully discharged and recharged many times before for proper calibration. I even ran a battery calibration app. Still, this problem happens. What exactly is going on? I have had the phone tethered to remain charged and never once had a problem with the battery. I do know when I flashed Gingerbread, my battery life has increased dramatically.
Charge till you get the fully charge notification
Then turn off
Then go into click work recovery
Go to advanced
Click reset battery stats or something like that
Put back on charger
This proly happens cause of overheats from the super crap **** gb leaks
Also discharging the battery doesn't help
Sent from my SPH-D700 using XDA Premium App
Then, why does everyone say to get the most out of your battery, you discharge it fully then charge it up to 100% about a couple times to maintain proper battery life and calibration?
There is an issue with some installations of the gb leaks where the battery stops charging at 100% even when it is still plugged in. I had this issue and could not remedy it. Went back to a solid ec05 base and my charging works fine again.

Battery Meter or Voltage Meter problem?

My G2 gets ghastly battery life. I've tried Juice Defender and I've recalibrated more times than I can remember. Most notifications are turned off and I'm conservative about powering off the various radios when I'm not using them. It wasn't always like that. I felt like I was getting most of a full day on one charge and loving it for many months, but something happened last summer I think. Maybe dust or moisture affected the phone. I've got a total of six batteries and three external battery chargers. No battery whether it's the OEM original, 1500mah spares that were amazing before, or the new 1800mah evo shift 4g batteries I tried out, will last more than about four hours from full charge to the 15% warning sound.
I've tried only charging in the phone. I've tried rotating batteries charged in the external chargers. Like I said, I've tried calibration scenarios of various kinds.
Last night, I took a fully charged 1800mah battery and put it in my phone and then charged the battery in the phone. The orange led never turns green when the phone is off. When the phone is on, I can just barely get the led to turn green at about 91% (starting from what should be a full charge that is reported as 80% by the phone). This takes a good 10 hours of charging. As soon as I woke the phone this morning, the battery meter started dropping while the phone was still plugged in. After unplugging, the meter drops to 80% in a matter of a few minutes.
Like I said, I tried juice defender. It only helps a little but the cost is waiting for the data radio to reconnect every time I wake the phone. I thought BT was the culprit for a while, but now it really doesn't matter if I leave it on or turn it off.
At the other end of the charge, the phone can run for several hours when the battery is supposedly between 1 and 3%. I know we are told to start charging again at 15% but my phone drops to that level in 3-4 hours of regular use. I haven't seen the phone report 100% charge on any battery in six months time, but it runs and runs at 1%. This is what bugs me. Is the phone just mis-reading how many milivolts are coming out of the battery? Why can't I complete the first step of calibration (charge overnight to the 100% mark)? Is there a hardware component that can be causing this or should it be entirely fixable in software?
Thanks for any ideas or tips
Did you wipe battery stats?
Sent from your phone
waxinpoetic said:
Did you wipe battery stats?
Sent from your phone
Click to expand...
Click to collapse
Yes I have many times but thanks for the suggestion.
Figured so.. Too bad, would have been too easy. I'm starting to see some batttery drain on my desire z now too. Im wondering if mine is a radio issue.
Sent from your phone
waxinpoetic said:
Figured so.. Too bad, would have been too easy. I'm starting to see some batttery drain on my desire z now too. Im wondering if mine is a radio issue.
Sent from your phone
Click to expand...
Click to collapse
I changed radios and did RIL matching last fall based on other's comments about better battery life, 4G and GPS. While I've had faster GPS locks and maybe better 4G performance, my battery life did not improve. It may have even gotten worse.
Today I'm trying out some different CPU governor settings. The CM 7.2 RC1 default is 'interactive' and I wouldn't normally touch those settings. I think the powersave governor helped a lot, but the phone became almost unresponsive. Trying 'conservative' now. I should have read This long ago, but just got around to it today. I might invest in the SetCPU app as well.
OK, I can count on a good six hours of normal use if setCPU is holding down the max cpu frequency at night or when the screen is off. I'm still tweaking. Today, the phone crashed while playing music over A2DP and tracking a run with runkeeper. I think it needs to tick faster than 368Mhz when the screen is off.
Are you seeing improvement? I changed radios and like you havent seen much improvement. But I am a little better off than you are. My battery drain is terrible (1-3%per minute) only when connected to the internet (4g or wifi) or using navigation. If the screen is off, or if Im using non-internet apps I seem to get regular battery use. Good luck with your cpu settings.. I have ordered a new battery, but I doubt it will solve my issue. I may try tweaking my settings too soon, but Id better research more.
Just wondering do you have SuperCharger V6 installed? On my Desire Z I had some serious battery problems just as you mentioned. After I would flash my ROM (wiping the caches + reinstalling) my battery life would return to normal. But whenever I would flash SuperCharger v6 my battery life would spiral out of control. My suggestion for a ROM that handles battery life fairly well is Andromadus Audacity B2, just make sure you download and flash GAPPs (google apps). For example running that rom I have been getting very good battery life, approx. 16-20 hours of battery life with moderate use) with default CPU settings and data always turned on. I'm sure if you use Juice Defender to control your data you'll get above average battery life.
Note: Andromadus is an ICS (android 4.0) ROM
Qwerty_Uieo said:
Just wondering do you have SuperCharger V6 installed? On my Desire Z I had some serious battery problems just as you mentioned. After I would flash my ROM (wiping the caches + reinstalling) my battery life would return to normal. But whenever I would flash SuperCharger v6 my battery life would spiral out of control. My suggestion for a ROM that handles battery life fairly well is Andromadus Audacity B2, just make sure you download and flash GAPPs (google apps). For example running that rom I have been getting very good battery life, approx. 16-20 hours of battery life with moderate use) with default CPU settings and data always turned on. I'm sure if you use Juice Defender to control your data you'll get above average battery life.
Note: Andromadus is an ICS (android 4.0) ROM
Click to expand...
Click to collapse
Thanks (and thanked) Ive been waiting till ICS roms are bug free and having working cameras, but I think I may just jump on it now. My battery issues are untenable at the moment on a CM7 based rom. Thanks for the advice.
I was seeing some improvement due to SetCPU profiles. However, now if I have GPS and Bluetooth on so that I can listen to music and track my run in runkeeper, the phone seems to 'crash' after about 35 minutes or so. The battery meter shows that the battery takes a nose dive and I think the phone shuts down at 1%. If I restart the phone, it might say I have 30 or 40% charge left but then it drops rapidly again. It seems like it hates the warmth of my pocket. If I let the phone out in the cool air like on my desk, I can reboot at get back to 60 or 70% even though it was just saying 3%. I'm not running SuperCharger.
I'm trying to find cheap G2s for parts on ebay now. Maybe I can at least test out my six batteries in a different phone to see if any of them are shot. They all seem to have the same problems in my phone.
This will be my final update. I bought a used G2 off ebay. The same batteries I used before now show as fully charged when I expect them to be fully charged. I will be getting a feel for general battery life over the next few days, but I expect battery life to be roughly the same. I just won't have to guess at what the current battery level really is.
I'm seeing now that the new phone will show a 60% charge when the old phone shows 15% for the same battery at about the same time.
The new phone shows 100% when topped off but if I put the topped off battery in my old phone, I see 75-80% charge.
I may try sending the old phone to HTC depending on what they offer for repair services.
revwillie said:
I bought a used G2 off ebay. ... the new phone will show a 60% charge when the old phone shows 15% for the same battery at about the same time
Click to expand...
Click to collapse
I think what's happened to your old phone (and mine!) is that the onboard voltmeter chip is reading low. I've compared the on-board mV reading to a multimeter-measured battery voltage and what the phone reads as 3.9V the multimeter gets 4.2V (a fully charged Li-Ion battery).
Who knows what's behind it, but it seems like a hardware problem to me.

Battery acting weird since installing kit kat roms

For some reason my battery is acting like it barely wants to charge. It'll take hours just to go up by 4% and once it reaches a certain point, it no longer moves up in percentage. Sometimes it stops at 14%, sometimes it stops at 32% and sometimes it stops at 8, it's completely random. Also when I restart it, the battery percentage is completely different than what it was before. The weirdest thing is that the battery percentage actually decreases sometimes while it's on the charger. Even when I cut the phone completely off and it's showing the battery charge icon, the phone drains in percentage. This just started a couple of days ago, maybe a week after I flashed a kit kat rom.
Did you even check your port or chord? I would flash back to stock to make sure that it isn't the ROMs fault. Though it could be the battery?
? Powered By My Moga Pro ?
This has happened to me with third party batteries so try another battery and another charger. I'm running kit kat on my S2 and battery usage is quite a bit better.
I had the same problem, I tried different USB cables, flashed back to stock, nothing fixed it. I finally figured out it's charging port was going out. I took it to a place they had it replaced in 30 minutes, I'm now able to charge my phone fully and my battery life is back to being great.

Poor battery since 6.0.1?

So I updated my phone tonight and after it used 30% in an hour or so. All I was doing was using FB on it. Prior I played PAD for 15 minutes and it hardly used 5%. I've wiped cache, cleared app cache, and now I'm working on a full discharge from 100%. The battery is brand new and it was getting better life prior to the upgrade. So much for 3x better battery I guess?
After clearing caches I left it idle ofer night. It used 13% for 20 minutes of screen time. and then it used 3% idle over the 5 hours I slept. Still seems a bit high on usage for screen time but idle is great.
So I discharged it completely and now its losing power fast again. The battery was 100% unplugged it and turned it on and its 97%. So I turned it back off and checked it and its also showing 97%. Charge it back to 100%, turn it on, its on 100% but loses 1% in a second. Plugged it in while onand it took like 3 minutes to charge that last 1%/ No idea why. The battery is brand new and got 2 or 3 days on idle before, now it reports 20 hours. what happened to that 3x better battery? What else can I do to sync the battery properly? I also noticed 100% is not 100% until the phone tells me battery is charged.
Again this battery is brand new and my life with 5.1.1 was pretty good.
I've been having poor battery calibrations in EPH7, though my battery is still what came with the phone.
There are days I can get to about 5? left before the phone dies, and there are days it dies at 15?..
Already tried charging all the way till full while the phone was off, still the same. It's random, but I just generally expect the phone to turn off as I come close to 15?.
boofman said:
I've been having poor battery calibrations in EPH7, though my battery is still what came with the phone.
There are days I can get to about 5? left before the phone dies, and there are days it dies at 15?..
Already tried charging all the way till full while the phone was off, still the same. It's random, but I just generally expect the phone to turn off as I come close to 15?.
Click to expand...
Click to collapse
That sounds like a bad battery. I can get my phone to drain down to 0% before it dies, but the battery usage can be erratic.
After some testingm the first 5% (95-100%) does down fast but after that it can go a pretty good while. Not sure why. I left the screen on with max brightness, turned on NFC/wifi/bluetooth and just left tons of apps running and it took 4-5 hours to get the battery down to 20%. the life is in fact great just not properly synced. No root makes it more of a pain to calibrate.
So I charged the battery offline and it got to 100%. I switched it on and it shows 97%. What the hell has marshmallow done to my note?
last post. If I charge the phone formt he OS it reaches 100% seemingly properly and doesn't discharge quickly. Not sure what marshmallow screwed up.
I had the same issue with my battery draining quickly after the upgrade. I backed up all of my data and then performed a master rest of the phone and then went into recovery and cleared cache as well. Once it booted back up I reloaded all of my apps and reconfigured all my accounts and my battery acts normal once again. It was a pain in the ass to do all of that but it did work for me so hopefully it works for you too.

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