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

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2
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3answers
2k views

My Nexus 4 says it's charging but it's actually discharging

I plug in my Nexus 4 to a charger cable plugged into a wall outlet each night, and each morning I disconnect it. But sometimes during the day when it's not plugged in, like today, it says "Charging - ...
2
votes
0answers
5k views

Auto boot when charger connected (for HTC Magic)

I want to let Android OS to boot automatically when the charger connected (for HTC Magic) without pressing power button I found this guide: Complete boot when charging If your phone only gets one ...
2
votes
3answers
2k views

HTC One X won't charge

I bought a HTC one X in China, in order to send it to my girlfriend who's in UK, but she's constantly get charging problems. The problem is like this: Can't charge at all using AC adapter if the ...
2
votes
0answers
1k views

How to properly charge a Lithium Polymer battery [closed]

My battery is Lithium Polymer. I want to ask the following: Is a Li-Po battery essentially the same as a Li-Ion battery? Can I use my phone while it's charging? I've read that you have to calibrate ...
2
votes
1answer
4k views

Is using chargers of phone not meant for it harmful to the battery? [duplicate]

Possible Duplicate: Is my phone liable to explode if I charge it with a charger that came with a different phone? Are Android chargers universal in terms of power (Voltage, amperage)? As ...
2
votes
2answers
3k views

How to keep phone powered down while charging with ClockworkMod Touch Recovery?

In the course of setting up CyanogenMod 7.2 on my T-Mobile G2 (also known as the HTC Desire Z), I installed ClockworkMod Touch Recovery. My usual practice before that was to power off my phone and ...
2
votes
0answers
43 views

Can over charging damage battery? [duplicate]

Possible Duplicate: Does constant charging harm my Android cellphone? Indeed, this is a duplicate of: Does constant charging harm my Android cellphone? Just for the record -- let's say I ...
2
votes
0answers
446 views

Samsung Galaxy S stuck in boot loop when 100% charged

Before we start I should mention that I have not messed with the firmware in any way. But it seems that whenever I put it on charge and it reaches 100% capacity I turn it on and it gets stuck in a ...
2
votes
0answers
769 views

Is it OK to leave my Samsung Galaxy Ace charging all the time? [duplicate]

Possible Duplicate: Does constant charging harm my cellphone? Hello! I have the Samsung Galaxy Ace but the battery life is a bit of a problem for me. Can I leave it plugged in ie. charging ...
2
votes
2answers
2k views

My Galaxy mini having trouble with charging

Today I noticed that my Galaxy Mini is not charging properly. In morning it was switched off even after charging for the whole night. Some weeks ago the same problem had occured, but some time after ...
2
votes
1answer
209 views

How can I turn off the notification for the power plug connection?

My Samsung Galaxy S3 with Android 4.1 plays a sound every time I connect it to the power plug. Is there a way to turn that off without affecting all other notifications?
1
vote
1answer
565 views

Samsung Galaxy Nexus Charger - USB?

Does the Samsung Galaxy Nexus charger use a USB charger? If so, what kind?
1
vote
1answer
114 views

How do I select a non-OEM charger for my device?

My Nexus 5 D821 (2014)'s original charger started failing to charge the phone since last week. There are 1.8A & 1.2A LG OEM chargers available in ebay.com. Is it okay to use the 1.8A charger? or ...
1
vote
2answers
598 views

How do I override charging current on Huawei Honor 6?

On SonyEriccson Xperia X10i I do this: echo 1000 > /sys/devices/platform/msm_hsusb/gadget/chg_current This allows faster charging from computer's USB port (if I know it can source more than ...
1
vote
1answer
177 views

Is it safe charging a Galaxy Nexus through a USB 2A port? [duplicate]

This is a newbie question. While travelling, I need to recharge my Galaxy Nexus and my digital camera, both of which are meant to be charged through a micro-USB port, ie. 0,5A. To reduce charging ...
1
vote
2answers
543 views

How can I pick the correct replacement usb charger for my phone?

My phone has a wall charger with outputs 5vdc and 850mA, which just broke (I saved the USB-microB cable which I've been using to charge from laptops). Unfortunately, OEM chargers of that particular ...
1
vote
1answer
105 views

email me when a charger is connected?

I want to be able to leave a device with charger plugged in the socket, and have it email me (or call/text me on my another device) as soon as it gets power (ie when the charger is technically or ...
1
vote
2answers
602 views

How to prevent Nexus 7 of charging the battery every time when connected to a USB?

Hello fellow Android enthusasts, I recently bought a Nexus7 that I want to use for development. The thing is, every time I connect it to my USB, in order to test some apps on it, it starts charging. ...
1
vote
2answers
552 views

Phone is too flat to charge

My phone died today, and now it won't charge at all on the charger it came with. I don't think the battery has failed, as it still gives me just as much charge on a full charge as always. The phone is ...
1
vote
1answer
213 views

Fast Charging by Qualcomm 3.0- impact on battery?

I am thinking of buying HTC one A9 My only concern is with fast charging . I have read this thread How does fast charging work? and understood the downside is mainly on battery life. Accepted answer ...
1
vote
2answers
89 views

Is there a way to leave the phone plugged in, but schedule when to actually charge it?

Under my normal daily use, my phone would have around 50~40% battery power left before I go to sleep. I don't want to keep my phone plugged in to charge over night, but I do want it to be at 100% ...
1
vote
1answer
185 views

Is it possible for a device to consume more power than it is wall-charging?

I have a 2012 Nexus 7 running KitKat. I have a hunch that it is not charging properly. Specifically, if the system is on and the device is plugged into the USB wall-charger, the battery indicator says ...
1
vote
1answer
2k views

Charging New Phone

I bought a new phone today. Motorola How long am I supposed to put my new phone for charging (Li ion battery)??? Should I keep it plugged even after it shows 100%?? Please help me clearing this ...
1
vote
3answers
469 views

Battery charging issue in Samsung Galaxy S3

I have a Samsung Galaxy S3 and it is charging very very slowly when plugged into my PC. I deleted all my images and some videos and some other stuff and the charging seemed to speed up. Is battery ...
1
vote
3answers
14k views

What is the maximum charging current supported by Samsung Galaxy S3?

As the title says: What is the maximum charging current supported by Samsung Galaxy S3 (GT-I9300)?
1
vote
2answers
4k views

Samsung Galaxy Nexus doesn't detect charger

This happened yesterday night first. My phone's battery was very slow, so I decided to charge it. It didn't start charging after plugging in the charger. Frustrated, I kept trying with different USB ...
1
vote
2answers
3k views

Asus Transformer slow charge

My ASUS Transformer TF101 charges extremely slowly using the original power adaptor. I'm trying to figure out the cause. Here are all my knowns: The power block (wall to USB adaptor) charges my ...
1
vote
1answer
247 views

Is it ok to charge my Nexus S with an iPhone power adaptor? [duplicate]

Possible Duplicate: Is my phone liable to explode if I charge it with a charger that came with a different phone? I have an iPhone charger (produces 5V and 1A output). Is it okay to use ...
1
vote
2answers
68 views

How to prevent brightness when battery reaches high?

I leave my phone (Samsung Galaxy 4 GT-I9506, Android 5.0.1 lollipop) charging on my table when going to sleep. It reaches full after some hours often. It is so annoying when the display becomes bright ...
1
vote
1answer
182 views

How can I force my device to pull more watts from charger?

I have three devices, Nobis nb7022 s, droid mini, asus memo pad 7 (me170cx). I am using a charger that has a rated out put of 2000ma. The nobis draws 8 to 10 watts from the wall outlet. the droid mini ...
1
vote
2answers
1k views

Xperia SP looks like it's charging, but it doesn't charge

My phone is Xperia SP, it's on CM 12.1, unofficial build (because the official one is buggy due to bad kernel). It has been bought second-hand, so I'm not sure about its history (the phone was in a ...
1
vote
2answers
261 views

Will plugging the Samsung fast charger into a outlet rated 10W/2.1AMP slow down the charge rate?

The S6 comes with a fast wall charger, but how does it work exactly? I want to plug it into a “one outlet Belkin” with surge protection, that is 2.1AMP for the ome USB port and 10W for the single AC ...
1
vote
1answer
198 views

How to use an external sd card and recharge the battery at the same time

I'm an happy owner of the tablet nexus 10. It is very good. Some time ago I've bought the leef connector because I want to use an external sd card : as you can see from the picture,there is a ...
1
vote
2answers
5k views

My Galaxy Tab 3 will only charge from the wall adapter from Samsung [duplicate]

I'm going on holiday soon and we planned to take a USB hub to charge all of our devices rather than take several wall adapters, however when I checked that my 7" Samsung Galaxy Tab 3 would charge, I ...
1
vote
5answers
10k views

Are 'Apple/Android Specific' USB charging ports really different?

I have a portable battery with two USB ports. One is labelled Android and one is labelled Apple. Apparently each has charging circuits optimized for that particular type of device. This sounds ...
1
vote
1answer
5k views

Where in the Nexus 4 is the wire wireless charging coil?

I've just received a "smartfox qi" wireless charger as a gift, but it won't charge my Nexus 4 despite its indicator light turning on, and the Nexus 4 says "charging wireless". Still, it doesn't ...
1
vote
2answers
25k views

Can I charge my Samsung tablet without the plug in charger? Are there any other ways?

I have a Samsung Galaxy Tablet but my charger is a little broken. It only charges if I play around with it but that frustrates me. Is there any other way I can charge my tablet without wasting money? ...
1
vote
1answer
3k views

I cannot charge my tablet

I only have a USB cable to charge my tablet and I plugged it into my laptop to charge and a little red X shows up on the battery thing. How can I charge my tablet?
1
vote
1answer
537 views

Do batteries on new devices start discharging even when plugged in to the adapter?

On my old phone, HTC Hero, when it was connected to the charging adapter and the battery level reached 100%, it never went down when plugged in, like the battery wasn't used at all and the phone was ...
1
vote
1answer
1k views

why does the xoom dock connect the USB port?

I feel like I must be missing something. I got the Xoom dock from Verizon along with my 4G upgrade (The turn around on the whole thing was 1.5 days, and the 4G is amazingly fast, so, definitely don't ...
1
vote
1answer
47 views

Nexus 6 Powered On Strangely

Earlier today, when trying to power on my Nexus 6, I had a strange thing happen. I normally power on my phone when it is still plugged in to the charger, and I tried doing that today, but after ...
1
vote
1answer
136 views

Powering Samsung J7 using an external DC power supply

I would like to turn on Samsung J7 using an external power supply. The problem is that it uses 4 pin (+,*,-,*) to connect to its battery. The first pin is the positive and the third one is the ...
1
vote
1answer
129 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 ...
1
vote
1answer
76 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 ...
1
vote
4answers
2k 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 ...
1
vote
1answer
51 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.
1
vote
1answer
762 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. ...
1
vote
1answer
240 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 ...
1
vote
1answer
154 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 ...
1
vote
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 ...