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

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0
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0answers
117 views

Why my Note 2 can not charge properly

Yesterday I plugged my (turned-off) Note 2 in but it refused to charge properly, even though I charged it via pc. I removed the stock battery and swapped a OEM and my mpj extended battery ...
2
votes
2answers
3k views

Is it safe to use phone while charging with portable powerbank?

I understand using phone while it is being charged by a normal charger is not advised. What about using phone while it is being charged by a portable charger (powerbank)? I own a HTC one and i was ...
0
votes
2answers
70 views

When selecting an USB extension cable to extend power cord, what are the relevant considerations?

I want to use USB extension cords to extend the USB power cords for my Android device. What are the factors that could affect normal charging behavior? (Consider "normal charging behavior" to be ...
1
vote
2answers
2k 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 ...
1
vote
0answers
62 views

Galaxy Nexus reboots on USB connection

I've had my Galaxy Nexus since April of 2012, and it's been fairly reliable ever since. However, for the past few weeks, I've noticed that it's rebooting whenever I plug it into my computer for ...
0
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0answers
133 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
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0answers
42 views

charging samsung galaxy tab 2 10.1

My cat recently broke the jack that came with my tablet, so I bought a cheaper one from walgreens, making sure it was 2 amps. They didnt have one exactly 2, so I bought a 2.4, and theres still a red X ...
0
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0answers
29 views

How to stop USB charging? [duplicate]

I'm a developer so i plug in my device for quite a long time, so i think it might affect my battery life. Is there any way to disable usb charging?
0
votes
1answer
66 views

How to select a power supply for a given Android device

There are a variety of products on the market which provide a power supply for Android devices through the ubiquitous MicroUSB 2 port. These include adaptors for 12V "cigarette lighter" car DC power ...
3
votes
2answers
2k views

Increasing my phone's charging rate while tethered

I have a Samsung Galaxy S3 and a laptop with 2 USB 3 ports. When tethered to my laptop (to provide Internet access via GSM/HSPA data), the phone charges very slowly, especially if I am using it for ...
0
votes
1answer
133 views

Galaxy Nexus won't charge, will immediately reboot if turned off

Ran into a bizarre problem this morning. My Galaxy Nexus was plugged in, but not charging. Data transfer over USB seemed to work, but no charging would happen. Stranger still, if I turned the phone ...
0
votes
1answer
83 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
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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
3
votes
2answers
134 views

My Nexus 7 is dead, any suggestion?

My Nexus 7 died. I didn't see it happening. My son was playing, went to school and left it charging. At night it didn't turn on anymore. The screen is black. I've followed the Asus instructions. This ...
0
votes
3answers
4k views

how much current can Samsung Galaxy S II take for charging with whatever ROM?

What is the maximum power SGS2 can use when charging, given a capable charger? I use power-consuming apps while driving a car (navigation + video registrator), and looking for ways to minimize ...
0
votes
0answers
53 views

Charging my tablet

When I plug my galaxy tablet in to charge it there is an red X on battery sym and a page pops up that wants me to choose what ubs to us MEDIA PLAYER or MASS STORAGE.. why is this?
0
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0answers
163 views

Can't connect to PC after changing my phone's charging IC

I changed the charging IC in my Galaxy Note 1 because of a malfunction. Now I'm able to charge my phone using the wall adapter, but I cannot connect it to my PC via USB. Now, when connected to a ...
1
vote
0answers
66 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 ...
-3
votes
1answer
104 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
218 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
444 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
0answers
69 views

samsung galaxy nexus charging problems

it doesn't charge until battery totally dies and few minutes after that only, charging triggers. Not sure if it an issue with charger or the phone battery.
3
votes
3answers
3k views

Can my Samsung Galaxy Nexus and iPhone 5 share same micro USB charger?

Does the micro USB charger cable that comes with the Samsung Galaxy Nexus be used with the iPhone 5 and vice versa?
1
vote
1answer
499 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 ...
9
votes
4answers
4k views

Disable USB charging

For some reasons not related to the battery life, I need to disable the battery charging when a USB host is connected to my phone (a rooted Nexus 4). Taking a look around on the internet (link1, ...
1
vote
4answers
196 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 ...
2
votes
1answer
371 views

Battery charging indicator went crazy on my Samsung Duos S6802

While I was playing a game, my cellphone warned me that my battery went too low. I plugged the charger but it was like it didn't work (charger indicator didn't show the bolt icon). After several ...
2
votes
1answer
692 views

Do you need a special charger for a Nexus 7?

Do you need a special charger for a Nexus 7? I've been trying to use the same charger as I use for my Android phone and it works poorly. If you tilt the tablet upwards it's charging, but otherwise ...
0
votes
1answer
880 views

Can a Samsung Galaxy 3 tablet be charged safely using a universal travel charger?

My daughter is in Thailand and she has been using a solar device to charge her Samsung Galaxy3 tablet (7 in.) This method is no longer charging the tablet sufficiently for use. She has a universal ...
0
votes
4answers
2k views

CyanogenMod 10.2 on Galaxy S3 charging problem

I have a Galaxy S3 with CM 10.2 build date 28-09-2013. The problem I am facing is slow charging of my mobile. It takes around 6-7 hours to charge when connected to AC power source. Before CM with S3 ...
0
votes
1answer
148 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?
0
votes
1answer
466 views

How to NOT charge when USB debugging? [duplicate]

I develop "on the road" using a laptop that's not connected to a power source, so when I debug on my android devices, they drain my laptop battery. Unfortunately, the laptop is a MacBook Air so spare ...
0
votes
0answers
231 views

Samsung Galaxy SII battery not recognised / charging

Last night I changed the USB / Charging port on my Samsung Galaxy S2. Now when I plug in the charger it recognises the charger but the battery level stays on 0%. I have tried to charge the battery on ...
0
votes
1answer
308 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 ...
1
vote
2answers
216 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
0answers
1k views

Galaxy s2 is recognised by computer but doesn't charge

This is an odd one but today I noticed by S2 wasn't charging while plugged in. I tried connecting it to the computer and it came up as a media device as normal but still didn't charge, the battery ...
1
vote
2answers
6k views

Galaxy S3 is stuck at Samsung logo splash screen and won’t charge

A little bit of help would be highly appreciated. A few days ago, my Samsung Galaxy S3 started freezing randomly. I had to remove the battery in order to restart it. Yesterday the problem got worse: ...
5
votes
2answers
304 views

Battery meter went crazy and now stays at 0%

I have a Samsung Galaxy Discover that worked fairly well until the last week or so. I ran the device down down to 0% - at which point the device shut off. I performed a full recharge and then ...
2
votes
1answer
384 views

Does using an unofficial charger negatively affect overall battery lifetime of a GS4?

According to two employees at the Sprint store, using an unofficial charger for the Galaxy S4 will negatively impact the overall life of the phone's battery (edit: in other words, the battery will ...
1
vote
2answers
78 views

I'm interested in using a laptop battery as an external battery pack for phone

As title said I'd like to use a laptop battery for my phone as an extender. One usage would be on a plane where my laptop is too bulky to really use but I could pull the battery out of it and use it ...
0
votes
1answer
416 views

My Galaxy y s5360 is not detecting the sd card?

I am using the Galaxy Y (S5360) with Gingerbread. A few days ago my mobile stopped detecting any charger or usb. After some time it started working again but it still wouldn't connect via usb to a PC ...
0
votes
0answers
371 views

unable to charge Google Nexus I9250

I am unable to charge my phone most of the times. When I connect my phone to the USB cable which is in turn connected to the computer or charger, most of the times (about 90 percent), I am unable to ...
0
votes
0answers
137 views

Recharge interface infinite boot loop

I'm having this problem for a while and don't remember exactly how it occurred, if I remember well, it started happening after flashing a non-stock ROM with CWM, but can't really reproduce it. ...
1
vote
0answers
123 views

problem with charging symbol,

I purchased a unlocked Samsung Galaxy 3 mini from the internet. Worked fine until I went abroad and change the SIM card. Now I am back in the UK, I am having trouble charging the phone. The charging ...
1
vote
1answer
3k 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 ...
6
votes
1answer
339 views

What does a red battery icon indicate?

While charging my Jellybean 4.1 device at my PCs' USB, I see the following red battery icon in the notification bar: What does the red color indicate?
0
votes
0answers
706 views

How to root this device? RK3188

I am attempting to root at RK3188 Mini PC I bought from amazon. I believe I have found the drivers, but cannot figure out how to connect a USB cable to the device to connect to my PC to root. Please ...
3
votes
1answer
4k views

Looking for a consistent answer about battery calibration

This forum is full of questions about battery calibration. The thing is, that either I'm blind or one answers contradicts others. In particular: For example forums says, that battery should be ...
1
vote
1answer
51 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. ...
1
vote
1answer
77 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 ...