For questions related to batteries on Android devices. Questions about battery life should be tagged with [battery-life]

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0answers
128 views

Hardware problem: extreme battery drain

I've been experiencing extreme battery drain on my Nexus 4. Basically the phone drains 10% per hour on idle. I flashed the official Android 4.2.2 image and did a reset. I replaced the battery with a ...
0
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0answers
485 views

MpDecision - cpu power consumption

I have a customize rom. With battery drain, about 3 times vannila/stock rom. with gapps, wifi off. proc/uptime show same wake time as stock/vannila for the same scenario possibilities of battery ...
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0answers
70 views

Severe battery drain by androidOS over multiple ROMs

I'm using xperia Sola. For the last 15 days i noticed that my battery was draining abnormally fast. When i view battery stats in settings the androidOS is always at the top with more than 90% battery ...
1
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1answer
222 views

Unwanted processes

I bought a Sony Xperia SP phone 3 days ago. Nice, fast, everything is seems to be all right, except for 2 things: Last night, I killed all the tasks, set the stamina mode, and charged it to 100%. I ...
3
votes
1answer
224 views

Don't charge to 100% when always-on wall-plugged-in

I want to use a Google Nexus phone for an always-on wall-plugged-in WiFi tethering access station. It occurred to me that if I just do it like this, then I'm risking ruining the battery within a ...
2
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5answers
6k views

Slow Charging Battery!

I have a Samsung galaxyS3 the battery has been charging really slow. It can take up yo 10 hours to charge 100%. I have tried every thing I can think of. I've tried a new charger, new battery, shut ...
2
votes
0answers
242 views

500 charge limit on wireless charger for Nexus 4 / 5 (QI)

I recently bought a QI compatible charger for my Nexus 5. On the box it states, that the wireless charges up to 500 times. I don't understand why the charger is only able to charge my phone 500 times. ...
3
votes
3answers
8k views

how does battery calibration work?

There are several posts on how to calibrate android batteries but none describe its working. How is it that the system can determine at what voltage the battery is considered to be charged (100% or ...
1
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1answer
4k views

First battery charge on new tablet?

I got yesterday a Galaxy Tab 3 and I want to be sure what's the best way for the first battery charge. On the shop, they told just turn it on, wait for the battery to finish and then charge it to 100% ...
0
votes
1answer
199 views

Is there anything similar to APNS on Android?

Is there anything similar to APNS (Apple Push Notification Service) on Android? (APNS uses a single TCP connection between an iOS device and an Apple-controlled server, which issues push ...
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0answers
38 views

How do I know which apps are actually using battery?

There is a Battery section within Settings on my Galaxy Nexus, which shows which apps are using the most battery. However, it would appear that not all apps are present. For example, my mail client ...
0
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1answer
33 views

What are the hardware requirements for Battery monitoring?

I looked at the hardware compatibility list, but there is no mention for a requirement of a battery monitoring functionality in the hardware. But, all phones display the battery level with the ...
0
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0answers
494 views

Battery and recharging suggested practices on Galaxy Note 3

Can someone please verify that the note 3 uses a Lithium Ion Battery? Does using the Note3 - for example making a call - while charging negatively impact it? My old flip-phone would heat up if I ...
0
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0answers
59 views

How are Battery History logs generated

How are the Battery History logs generated in dumpstate? I know that battery history is printed in dumpstate by batterystats.java, but how does this file get the battery stats from kernel? Also, how ...
0
votes
1answer
209 views

How can I increase my samsung galaxy fit's battery life?

I'm using Samsung Galaxy Fit(S5670) and running official 2.3.6 version. My battery's capacity is 1350mAh. Can I increase this capacity to 1500mAh or 2000mAh?
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0answers
38 views

Phone turns off at random

I have a note 1 N7000, and each time the screen began flickering and after that it shut down. This got worse after flashing a cyanogenmod rom. By plugging in the charger the battery seemed empty, but ...
1
vote
1answer
97 views

Make the sleep timer on a tablet dependent on whether it's being charged or not

Is there a way to set the sleep mode timer depending on whether the tablet is being charged or not? I normally have my Android tablet (Xoro Pad 9718, Android version 4.1.1) next to my computer on ...
14
votes
1answer
380 views

How do I fully charge my emulator battery?

It bothers me to see half charged battery. Anyone knows how I can fully charge it?
0
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1answer
251 views

Differences in battery information and phones printed labels

I just run across this today: The value for battery current capacity printed on the battery of some Samsung Android devices are different than the numbers printed on the label on the phone (underneath ...
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votes
1answer
1k views

Is there a TRUE brightness controlling app?

I need to set my brightness below what Android allows me, and thus I'm testing a bunch of "dimming" apps. What they all have in common though is that they put on a filter over other apps so while they ...
1
vote
1answer
328 views

How to solve the short battery life with galaxy s4?

I bought Galaxy S4 in just half year. However I found some wrong with the bettery, my phone shutdown automatically recently with over 20% battery. I can only use the phone for two hours after my phone ...
0
votes
1answer
145 views

Nexus S battery drains after updating to 4.2.2 even if turned off

My Google Nexus S battery drains after updating from 2.3.7 to 4.2.2, even if it is turned off. One night I shut it off at 70% charge, and when I turned it on in the morning it was at 9 or 10%. I ...
1
vote
0answers
204 views

Samsung Galaxy Note 2 wont charge while on and battery is discharging

So after reformatting my phone, resetting to defaults, nothing has seem to work. I even took it to my cell provider to see the tech, they didn't do anything. Whats weird is that it had 20% and so i ...
0
votes
1answer
69 views

Any way to reduce the frequency of searching for a signal

My fiancee just got my old SGS2 when I got my new N5. The problem that she's having is that there is no cell reception at her work. And because of this, her phone is constantly searching for a ...
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0answers
5k views

Battery Trickle Charging, good or bad?

What are the side effects of using apps that trickle charge battery. App like "Battery Doctor". It charges around 30-50 (varies with device) mins after battery is fully charged, which results in a bit ...
0
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0answers
48 views

How do I decide what car charger I need to buy?

I am with Nexus 5 and finding it difficult to decide on what car charger or car dock with charger I need to buy. As there is no accessories from parent company (LG or Google) I not sure what charger ...
0
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0answers
100 views

How to disable/remove ALL cell functionality

I have a Kyocera Event (Virgin Mobile) running stock Android 4.0.4. This is only used as a media player for about 90 minutes ONE DAY per week. I am looking for a good way to extend battery life as ...
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2answers
3k views

Device Steadily Discharging While Plugged Into AC?

Question: My device (Galaxy Note 2 running the stable CyanogenMod release) is charging extremely slowly and discharges while it's plugged into AC power. What happened to cause this and what's ...
0
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0answers
158 views

USB connection issues with Nexus 4

I've installed some app from Google Play called "franco.Kernel updater", which had an option to enable "fast charging" (the app claims it provides a custom kernel that saves battery life). After I ...
0
votes
1answer
364 views

will gaming destroy my phone battery?

I think games probably destroyed my Note 2 battery. I often play games for hours straight while charging. Last Sunday it was dead with horrible heat. Then I borrowed friend's mpj backup battery, ...
1
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0answers
31 views

Samsung tab charging

Tab gt7500 battery went flat while downloading and now does not want to charge with supplied charger or via computer
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0answers
133 views

Strange Behaviour of HTC One X battery

maybe someone recognizes my problem or has had it himself. My problem is as follows: Normally I turn my phone of over night. Battery Monday evening 50%, Tuesday morning 23% Battery Tuesday evening ...
0
votes
1answer
227 views

Nexus 7 refuses to boot unless plugged into outlet

I've looked around the internet for this problem ad/or solution for hours and have found absolutely nothing on this problem. My tablet is brand new, straight from the box. When i have it plugged in ...
1
vote
0answers
69 views

Android battery mucking up

I have an unusual problem with my galaxy s4 battery. Screenshot (click for larger variant) Sometimes when the battery level is 85% it can shut off and when I turn it back on it can go straight to ...
1
vote
0answers
59 views

Why battery “sags” on my device and how to fix/workaround it?

Sometimes my device shows "No SIM card" status and "0%" battery and soon powers off (even if I manage to quicky connect it to USB). After powering back on it works more or less as expected. Why ...
0
votes
1answer
80 views

Why the battery attributes are missing in android phones?

on the android shell, when I executed following >ls /sys/class/power_supply/battery was expecting, current_now, power_now, charge_now or energy_now but I didn't find any *_now attribute other ...
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votes
1answer
115 views

Android software runs differently based on different battery chargers?

I have a Samsung Galaxy Nexus and a Samsung Galaxy Mini2. In mid-August I lost my GNex battery charger; then I started charging the GNex with the Mini2 battery charger. Their specifications are: ...
1
vote
1answer
302 views

Is there any battery-less Android-based device

I'be been working on some Chinese (bit crappy) device, with own system, that had one wonderful (at least for me) feature. When constantly powered-up (plugged to power adapter) it could work without ...
1
vote
3answers
619 views

What happens when using a cellphone when charging?

What happens when a phone is being used with the charger connected? Will it take power from charger and save the battery usage? OR At one end, the charger keeps charging the battery and at the ...
0
votes
1answer
164 views

S3 battery not work after water damage [closed]

I dropped my S3 in water and the stock battery stopped working. I didn't know how to fix it (I tried drying it with a hair dryer but it did not work) so after comparing prices and discounts I bought a ...
1
vote
1answer
753 views

Power problems with Droid Incredible 2

My daughter's Droid Incredible 2 is mostly dead. Symptoms: If we can manage to turn it on, it only stays on for a minute or so after it completes all of its start-up tasks. Then turns off and acts ...
0
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0answers
324 views

What would cause a sudden spike in the battery charge level?

Today I spotted something this on the battery chart : graph of battery history showing a massive spike (click for larger variant) What is the reason of such erection ? Hardware problem ? Or maybe a ...
0
votes
0answers
29 views

SGS3 was hot while using it

My Samsung Galaxy S3 gets overheating easily but I don't know whether this problem is causing by the processor, battery, software or other part of the device. Then I troubleshooted the GS3 myself, and ...
0
votes
1answer
167 views

Nexus 4 won't charge through laptop on low power

When my Nexus 4's battery is less than 5%, it won't charge while connected to my PC, but I can charge by plugging my Nexus 4 the wall adapter. I believe it is a hardware problem. Can you help me?
1
vote
1answer
339 views

What kind of hardware problems is a cheap Android phone likely to have?

For development and application purposes an organisation I am with is considering buying a cheap Android handset here in India (this is the handset). But what kind of problems can one anticipate in ...
0
votes
0answers
164 views

Battery Drains out Suddenly

So here is what happened! I was simply going though my phone (Canvas HD running Jellybean) when suddenly it hangs and then shuts down. I try booting it. It turns on but goes off again. I try it yet ...
0
votes
1answer
424 views

Nexus 4 wont hold charge after screen and battery replacement

I've just replaced my broken screen and put a new battery into my nexus 4 following this you tube vid: http://www.youtube.com/watch?v=AZDAIgwbXk4. When I first plugged in the charger (1A generic usb ...
0
votes
1answer
94 views

short battery life

I have a gs3 running slim bean, and the battery life seems horrible to me. I woke up this morning at 8:00am with 100% battery life and by 1:30pm it has gone down to 23% I have been I barely use the ...
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votes
1answer
631 views

Can chinese tablet be used without a battery?

I have a Chinese tablet xpad xpod 7" tablet, bought it 2 months ago, I am already having problem with battery, it is discharging too quickly, so I want to operate my tablet without battery, simply by ...
0
votes
1answer
70 views

Phone's battery is damaged

My phone's battery is very weak. It can't operate without a charger. My phone is doing a lot vibration, which it never did before. Now, I'm afraid if I buy a new battery, it would destroy the new ...