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

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0
votes
1answer
34 views

android app charging help?

ok so i bought my android phone yesterday and it's really cool and all. downloaded bunch of apps like facebook and candy crush... my phone comes with charger that i use to charge my apps. yesterday ...
0
votes
1answer
12 views

Android charging current [on hold]

I'm trying to charge my android tablet (DataWind UbiSlate) running on 4.1.2 using a voltage regulator (LM3805C). Here's my circuit: My tablet can only draw 400mA from the circuit and it's only ...
0
votes
0answers
21 views

Android can't see usb connection

When I connect my device (Nexus 7 2013) to PC or charger by USB, android can't see this connection. It shows that baterry don't charges, but it charges. When tablet is off and I connect it to charger ...
0
votes
0answers
6 views

Charging related question [duplicate]

I keep my Nexus 5 connected to the wall charger even if it is fully charged. I want to know will it lead to any problems or there is nothing to worry about.
0
votes
2answers
22 views

Battery Status problem

I recently updated my Note 8.0 Wifi from 4.1.2 to android 4.4.2, and shortly after that rooted it (But kept the stock 4.4.2, NO custom ROMs or anything...). Of course, as I knew, the battery ...
0
votes
1answer
17 views

Only charges through USB when screen is locked

I have a Moto G running 4.4.4. When it's connected to a PC, it will only charge if the screen is locked: as soon as it's unlocked it will stop charging. In this situation, even if I lock the screen ...
0
votes
0answers
31 views

Automatically power on Galaxy Tab when the charger is connected

I have a Galaxy Tab 4 I changed the lpm file. Now the tab boots on charge, but in recovery mode!! Any ideas? Automatically power on Android when the charger is connected
0
votes
0answers
31 views

Battery voltage

I've just bought a replacement battery for my phone, it's exactly the same 1200 mAh 3.7v however when I look at apps showing battery info they say the battery voltage is 4mv. So what does this mean? ...
0
votes
1answer
38 views

Discharge while in airplane mode (with image)

Something weird happened today morning. I charged my phone yesterday night and gone to sleep after 2 hours or so. When I woke up, my phone was at %30 charge and I was pretty confused. Because before ...
0
votes
0answers
13 views

BatteryManager inner workings

I recently installed linux on a Sony Xperia Neo (on SD), but the Android kernel remains under the hood. I've only changed kernel initrd to boot off the SD's Debian. The real question is: ¿What is ...
0
votes
0answers
11 views

How to disable phone from charging without rooting [duplicate]

I have recently bought a galaxy grand 2 and I want to disable it from charging when it connects from usb. I want to have option whether to allow charge or not.
0
votes
1answer
38 views

Used (probably) inappropriate charger, touchscreen went crazy, permanent damage? [duplicate]

I used a plug with USB output than may have been inappropriate (output DC5V +/- 0.20V DC500mA +/-30mA). While it was plugged in, the touchscreen stopped working properly (touching one part of the ...
0
votes
1answer
28 views

Phone unusable whilst charging

I have a fairly old samsung galaxy S2 android 4.1.2. In the last few weeks, it has been behaving really oddly when plugged in to charge. The 'desk clock' page flashes up every few seconds of its own ...
1
vote
3answers
87 views

Why can't I charge a Samsung phone?

I use a dual-port 2-amp charger with an Amazon Basics USB cable. This works perfectly fine to charge my Nexus 4 and the Nexus reports "AC" not "USB" as charging mode. From the recharge time it's also ...
1
vote
2answers
70 views

My 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
votes
1answer
104 views

Emergency battery backup code

Is there any emergency battery backup code? In Nokia we have *3370#. I don't know this code will work in all devices, But in some devices it will backup the battery up to 50% Is there anything like in ...
0
votes
1answer
39 views

Is it possible to modify the firmware used when the device is turned off?

On (at least) some Samsung devices there is some piece of software that runs when the device is turned off. It is the one that displays the battery state when charging, along with the red/green ...
0
votes
0answers
15 views

Why does the screen flicker when connecting to a third party wall mounted USB charger

After going through this post(Why does my phone have erroneous input when connected to a non-OEM power source?) I am asking this question the above post does not solve my question up to the mark. I ...
0
votes
2answers
28 views

Charging from different USB cable

I have USB cable meant for Sony Xperia, the USB cable can be detached. Will using this USB cable to charge other phones like Nexus cause any issue?. I am not using the entire charger, I am just using ...
1
vote
3answers
57 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 ...
2
votes
0answers
15 views

How to prevent S3 from turning on when charging

I'm trying to charge a new battery with my phone turned off. As soon as I plug the phone in to the wall charger, the screen turns on and the phone tries to immediately boot instead of staying on the ...
0
votes
1answer
48 views

Charging Nexus 5 to 100% [duplicate]

Is it wrong to fully charge your android phone in general to 100% will it hurt battery life? and is it also to drain your battery to below 20% will it also hurt the battery life?
1
vote
0answers
67 views

My Samsung Galaxy S2 is not charging; it heats up when connected to a charger and it doesn't boot

I have a Samsung Galaxy S2 GT-I9100. I had recently installed Cyanogenmod from CM Installer. But one day while I was flashing the stock ROM via Odin, the progress bar was stuck at factoryfs.img and ...
0
votes
1answer
71 views

How can i turn off charging when my phone connected to my computer? [duplicate]

I have Android device Samsung S4. Is that possible to turn off Battery Charging when my phone connected to my Computer via USB Cable. Any ways to turn off or disable it from settings?
0
votes
2answers
65 views

S2 randomly restarting / draining the battery

For the past month my S2, SPH-D710, Android 4.1.2, will randomly restart throughout the day. I took the battery out for awhile and that didn't change anything. Sometimes it happens when I'm looking ...
2
votes
2answers
701 views

Samsung Galaxy S5 turns on when fully charged and never turns off

I just 'upgraded' from the Samsung Galaxy S4 to the S5. Both use similar 4.4.2 Touchwiz software, but by new one has some odd behavior. I'll explain. Notes: I set smart screen sleep (or timeout, how ...
1
vote
0answers
72 views

Samsung s3 makes “plugged in” noises while charging

I have recently bought a third party USB cable. I am still using the original wall adapter that I got. Now, I noticed that while charging, it sometimes makes the "plugged in" sound as if I had just ...
1
vote
1answer
23 views

Device does not boot after crash without power plug

In the last few weeks I'm faced with a somehow strange behaviour of my Android device (Samsung Galaxy S4 active, GT-I9295, Android 4.2.2, Kernel-Version 3.4.0-2015525): If the phone crashes resulting ...
0
votes
0answers
69 views

Charging inticator on battery showing always

In My Samsung Galaxy S duos 7562 the charging indicator is always shows as charging... but the phone is not connected with charger or PC. Can't able to enable the USB debug mode, the Error Shows the ...
1
vote
1answer
70 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 ...
0
votes
3answers
54 views

Is it possible to charge phone faster?

I know that going to Airplane mode can be useful But is there any way to charge phone faster?
0
votes
0answers
37 views

How can I make an Android device go from off to on at a chosen point?

I have a rooted Pantech Element and I want to make it turn on when it is charging (or at some other predetermined event, possibly). I have seen advice that says to edit a file called 'playlpm', but ...
0
votes
0answers
193 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 ...
1
vote
3answers
133 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 ...
0
votes
0answers
19 views

Is there a way to have your phone light stay when it is charging only from a laptop?

When I have the my device plugged into my laptop while working I want the light to stay on, but I want my light to turn off when I'm going to sleep when it is charging. I know I can have the light on ...
0
votes
1answer
18 views

CHarge port replaced-computer dont recognize

Hi i recently took my samsung galaxy 2 to a place that sells phones and service and also repairs them. Well i took it there because my charge port was not charging anymore so he said he could ...
0
votes
1answer
53 views

Android Boot Up When Power is Applied Through Induction Charging - Rooted Google Nexus 7

Initially, I looked into StackOverflow for an answer to this question, but my lack of experience was evident when I was redirected here, where my question was considerably more relevant, being based ...
0
votes
0answers
60 views

Android tablet I2C Read Errors

i've a brand new Ramos i9 tablet and have big issues with the touchscreen and charging. I've rooted it, and before i send it in for repair, i'm trying to debug the issue (in hope it's only software). ...
0
votes
1answer
67 views

My Samsung Galaxy S 2 indicates it is charging but doesn't

My Samsung Galaxy S 2 indicates charging but is not adding charge to the battery. I have changed my charger many times but the problem continues. What's the solution?
0
votes
0answers
26 views

How can I make my Android phone request (negotiate for) more charge from (with) the host PC?

Hello there is a wonderful Q&A here about detecting how much charge your phone is drawing from the computer host: How do you check how much power a USB port can deliver? In my particular case, my ...
0
votes
0answers
13 views

Should I charge new LG G2 for 6 before first use [duplicate]

I just bought a LG G2. The shopkeeper asked me to charge it for 6 hours. Within an hour it shows that it charged 100%. Should I continue the charging to complete 6 hours like old fashion. Or ...
1
vote
1answer
76 views

Samsung Galaxy 3 is HOT

Sometimes after using my phone for a bit, it gets super hot where the battery is. When that happens, I close all programs and don't use it for awhile; it eventually cools down. This also happens a ...
0
votes
1answer
59 views

Why does Galaxy Nexus i9250 official car charger have 700mA instead of 1000mA?

I discovered that the official Samsung car charger is rated for 700mA, but my stock wall charger has 1000mA. Is that normal? If I buy the 700mA charger, there's the risk that with the navigator on, ...
1
vote
1answer
1k views

Samsung Galaxy Tab GT-P1000 USB Cable Problems ; Charging Problems

Galaxy Tab is an old tablet.Yesterday,I can "resurrect" it from the dead,and I buy a fake USB cable to charge and exchange data. Since I have a worser phone than the Galaxy Tab,I really want to play ...
0
votes
1answer
16 views

Is there a way to determine the charging current available?

I have a Moto X that has recently stopped charging while in its car dock, even though it indicates that it's charging. I will diagnose the problem by eliminating the USB cable, the dock, and the ...
0
votes
0answers
67 views

ori ninetology upgraded software to galaxy s4 - usb port cannot connected to computer while the hp on

I just bought a second hand phone Ninetology Stealth II which originally was a Ninetology but the original owner upgraded the software to Samsung Galaxy S4. The problem he never told me about is: ...
0
votes
2answers
45 views

Connector allowing charger and usb computer connection as same time?

PoE lead me to idea of having some kind connector, allowing supplying my connected tabled with power from it's charger (5V 2A) and in same time being connected to computer (for backup or whatever ...
3
votes
0answers
104 views

Large difference in battery discharge, when Nexus 7 is on and off

My father got a brand new Google Nexus 7 II (2013) LTE tablet few weeks ago. Ever since first use, he was complying about battery discharge rate. Few days ago, I did some measures and I'm quite ...
1
vote
0answers
53 views

Micro USB cable - Intermittent

I have a http://www.amazon.com/gp/product/B004QOAGOQ/ "4-port USB charger". Recently I noticed that some Android devices e.g Nexus 7 (2013), charge very slowly when one particular micro USB cable is ...
0
votes
1answer
100 views

Is it okay to use USB 3.0 cable with USB 2.0 wall adapter?

I bought an LG Optimus One phone a long time ago. The phone came with a USB 2.0 cable + wall adapter. 3 months ago, I bought a Galaxy Note 3. The phone came with a USB 3.0 cable + wall adapter. The ...