For questions specifically about issues with battery charging or power supply.

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1answer
221 views

Device uses non-USB charger. Can I still charge it through the USB port?

I got a Polaroid L9H tablet for Christmas, which includes a carrying case with built-in USB keyboard. I assume that it is for this reason that the tablet was designed with a barrel connector for its ...
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1answer
89 views

How is an “average use” defined in terms of battery life

It is common to see better battery performance being touted as a selling point, when phones are announced and when they but the market. And the claim typically goes like "lasts xx hours on average use"...
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4answers
3k views

Quick drain of battery in new phone huawei g play mini?

Here is a screenshot of my battery drain. Is it normal , or should I go to service center ? My previous phone had much less sloppier curve . When I bought the phone I charged it upto 100% and then ...
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1answer
55 views

Can I charge my tablet with a plug that has different output voltage and current?

Can I charge my tablet with a plug that is for an old fashioned mobile phone? The plug has a different output voltage and output current.
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1answer
864 views

Powered USB hub not charging phone. Kernel options?

I got a powered USB 2.0 hub (ET-UP900). As power source I am using the phones charger. But if I connect the hub with my phone (SM-C115) it does not charge. If I connect the charger directly it works. ...
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1answer
292 views

How do I set battery charge min-max range to make it degrade with time less?

As far as I know, LiIon batteries should be kept in about 40%-80% range in order to degrade more slowly. On my laptop I use the following commands to make it change battery conditionally, only when ...
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1answer
162 views

Samsung Galaxy S2 new battery dying too quickly

I'm trying to figure out if the new battery is faulty or if there could be something else causing the battery to charge the whole night and then die after half a day. If I take out the charger while ...
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1answer
3k views

Cannot charge Xperia Z3 Compact

I have a 3 week old Sony Xperia Z3 Compact (D5833). However, it suddenly turned off and refused to charge. The phone was at ~10% charge before I plugged it in using the cable and adapter that came ...
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2answers
11k views

How do I stop my note 4 from activating the screen when it is done charging?

When I charge it at night and its finished the screen will stay on all night unless I plug it out. How do I stop this from happening.
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2answers
4k views

Samsung S3Mini - Charge/Discharge problems

I've got a strange problem on my S3Mini; two weeks ago has started to behave strangely, emitting the sound of charge/discharge while not connected to the AC adapter and setting the battery icon in the ...
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1answer
1k views

How can I disable usb charging on Android phone (Nexus 5)

I use my Nexus 5 as development device, so I plug-in and plug-out into computer usb very often. What makes me worried is that too many this way "li-on" battery charging cycles get wasted too fast. My ...
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1answer
2k views

Nexus 7: micro usb port broken

I have a 2012 nexus 7, its a beast of a device. But unfortunately the usb port of the device is broken. Is there any way I can charge the batteries my beloved nexus? I have opened it up, and removed ...
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1answer
611 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 ...
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1answer
1k 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 ...
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4answers
626 views

Phone wakes when unplugged, how to keep it asleep?

I'm trying to charge my phone with an inconsistent power source. Unfortunately, the phone wakes up whenever power stops... Sometimes (often) using more power than is charged. Is there a way to stop ...
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1answer
5k views

Is it better to detach a charger when my Android device gets fully charged? [duplicate]

When using my Android device at my desk, is it better to (from a battery health point of view) detach a charger as soon as the device gets fully charged, or is it ok to keep it on the charger? I like ...
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1answer
62 views

Closely monitoring charging (with bike charger)

I bought a bike charger for my Sony Ericsson Xperia Mini Pro sk17i . When I cycle, the phone says that it is being charged, but apparently it is not because the battery percentage doesn't increase. ...
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3answers
4k views

Nexus 4 wont charge or turn on; LED is blinking red

I've been charging my Nexus with the original charger for 2 hours. It still shows red LED light when I hold the power button. I've tried everything: Different USB chargers Holding the volume button ...
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1answer
1k views

Battery getting charged with ultra speed and continuous at 1%charge for more than 9 hrs

My neo v battery getting charged with in ten min from 0 to 100 percentage( Exponential growth graph ) with ultra speed and getting discharged to 1%( it also give alert showing last 1% left, keep ...
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1answer
1k views

HTC One X was dropped and now it doesn't charge or turn on

Last night, my HTC One X was dropped. Suddenly, it became so hot at the back and on the screen. After an hour or so, the phone started to cool down. But, it doesn't charge or turn on; even the ...
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3answers
1k views

Preventing charging while USB debugging - One X

I am often using my device to develop, so I'm a little bit worried that the constant charging might fry the battery. Is there anyway to use USB debugging while not charging the phone?
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1answer
797 views

Kindle Fire Power Adapter Specs

I have misplaced the power adapter for my v1 Kindle Fire. USB charging works but is dog slow. What are the specs of its adapter, including any branding, as they're never labeled properly. Also, a ...
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1answer
5k views

can sony xperia u(st25i) 's otg be connected to external power?

Can Sony Xperia U be connected to a Y-Cable to provide extra power for OTG to avoid phone battery consumption? I'm asking this because the phone is already giving power ,will that make a short ...
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1answer
3k views

Reset battery status after changing battery?

If I plug in the charger of my Galaxy Nexus, I'm able to replace the battery without switching the phone off. However, the battery status does not adjust to the new battery. For example, if I replace ...
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1answer
254 views

Does the Asus Transformer Prime GPS extension kit have a USB pass thru to charge the tablet

As noted Asus is offering a GPS Extension Kit for the Asus Tranformer Prime TF201. Does the module has a pass thru USB multipin connector to allow charging from the USB cable or does one have to ...
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1answer
1k views

Samsung Infuse is getting really hot when using a Samsung wall charger that came with Samsung Strive. Is this bad?

The output specifications for the Samsung Strive charger match those of the Samsung Infuse charger, so I don't see why the phone is heating up so much. Also, when charging the Samsung Infuse with ...
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1answer
559 views

Gingerbread — how to wake up to 100% battery?

Apparently gingerbread stops charging when the battery gets to 100% . I guess this puts less wear on the battery. But it is kind of frustrating to wake up with a battery of only 70 or 80% given the ...
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1answer
1k views

LG-Ally won't charge

My LG Ally is out of battery and won't charge at all. I know the outlet is working. It's charged in the past just fine.. I gave it like 30 minutes plugged in, and power wouldn't do anything. No ...
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0answers
83 views

LG phone seemingly stuck on “Firmware Update”

This may or may not be off-topic; feel free to point me to a better place to ask this. My father brought home a cell phone he found in the woods, and I thought I'd charge it and turn it on to see if ...
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0answers
45 views

Ethernet and charge via USB type C

I have an HTC 10 with the new USB Type C connector. As USB C is also the primary (or only) connector on some laptop style devices such as the Pixel C and new MacBook, there are many Ethernet and USB ...
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0answers
55 views

Battery Percentage Recalculate (Not Calibration Reset)

When I'm busy and don't want to reboot, I put the android phone on charge and pull out the battery and put a charged battery in quickly (without reboot) But the battery percentage level does not ...
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0answers
34 views

Removing charging animation from the tablet installed in a car

I've bought a no-brand tablet based on Allwinner A33 CPU running Android 4.4.2 to be put as a media system in a car. This tablet has few specific features which makes it suitable for the task but the ...
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0answers
33 views

Charging Behaviour Changed After Using Car Charger

On a recent road trip, I used a car charger to re-charge the battery on my Nexus 5 phone. Ever since, I have noticed a significant increase in the time required to charge the battery, even when using ...
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1answer
38 views

Charging during filetransfer

I have recently upgraded my phone from Android 4.3 to 6.0 in my Sony Xperia M. I'm pretty confused by the new behavior. Whenever I plug the phone to the USB cable, it is detected in the computer as ...
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0answers
55 views

Why does my OnePlus One draw 60% more current if I turn off the screen AFTER plugging it in?

It's pretty simple: If I turn off the phone's screen and then connect the wall charger, the power supply draws ~6W from the wall, and this doesn't change if I keep waiting. If I connect the wall ...
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0answers
96 views

alcatel onetouch FierceXL battery is draining too fast

I've only had my onetouch for 3 weeks now and all of a sudden the battery started draining rapidly, even when I plug it into the charger, and charging very slowly. If i use the phone at all when its ...
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1answer
51 views

WiFi only working while charging the phone

I am being experiencing this very strange issue in the last couple days. I have a Samsung Galaxy S3 Mini with an (unofficial) build of Cyanogenmod 11. Is has been working fine for the last year with ...
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0answers
80 views

Tasker profile that switches network to 2G when the phone is charging

I would really appreciate it if someone could whip up a nice Tasker profile which switches network mode to 2G immediately my rooted OnePlus 2 detects a charge state. A drawback of OnePlus 2 is the ...
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1answer
522 views

Xiaomi Redmi 2 Pro Battery Issues

I have a Redmi 2 Pro, and it works fine, except for some issues with the battery. If I charge it to 100% before I disconnect the charger and go to sleep, by the morning it may go down only to 98%, but ...
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1answer
571 views

Slow charging, random wake-up and dead USB connections

My phone, Asus Zenfone 5 (A501CG), takes too much of time to charge (6-7 hours). Also, the screen wakes up randomly every 5 seconds (approx.). The phone doesn't connect to a PC (it's not recognized) ...
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1answer
151 views

Can I charge my android cell phone with another usb chager?

I have an Android phone and a Tablet. Sometimes, when traveling, I just want to take one of the chargers. Is this ok? Can I just use any usb based charger in any android phone or tablet or can there ...
1
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0answers
361 views

Phone's battery is draining unusually fast even when not in use

The hardware I'm using: OnePlus One, bought late december 2014 Stock Cyanogenmod, version 12.1 - YOG4PAS1N0 (= Android 5.1.1) no apps to improve battery life in any way Basically, the battery is ...
1
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1answer
129 views

Usb Speaker with External Power supply? S ll

I'm using a 2x3W yenkee usb speaker with my phone through an usb otg cable and it's working fine, but when I turn the volume up the speaker turns off.I assume it's because of the high power ...
1
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0answers
429 views

How to care for a lithium-ion battery so that it will remain useful for as many years as possible [closed]

My question I own an Android smartphone with a lithium-ion rechargeable battery. I want the battery to remain at least somewhat useful as long as possible — even for five or ten years, if such ...
1
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1answer
263 views

Why is the screen acting weird while charging?

I noticed that when I charge my phone with a cheap charger that I bought from Ebay, the screen acts strange: It suddenly can't position my taps correctly and It detects swipes as taps. After a ...
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1answer
366 views

Nexus 4 won't charge or boot (red light)

I have been reading a bunch of articles on ways to fix this "red light" issue. My issue seems a bit different from most articles as the red light does not show up when I plug in my charger. Articles I ...
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1answer
56 views

2014 moto x battery life

I'm experiencing an issue with my 2014 Moto X's battery running Android 5.1 and I was wondering if someone have any suggestions or something ... for example, yesterday I had about 30% left of my ...
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0answers
189 views

How to charge a phone without it turning on?

I've got Sony Xperia Z2 (phone) and Sony Xperia Z1 (tablet). Every time I put one of them on charging (and pick up from charging for that matter), the device will turn on. I don't like it and I'd ...
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0answers
75 views

Nexus 4 red light of death. Unable to fix it (tried two possible solutions)

Using a 3-year Nexus 4, I started yesterday to suffer the red light of death issue. Firtsly, I open the unit, disconected and conected the battery, following the directions of: https://www.youtube....
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0answers
237 views

Phone switches off while charging

My Samsung Galaxy Note 3 Neo sometimes turns off automatically while charging on original wall charger. And then no physical button works, I have to remove the battery and then have to restart it. ...