[Q] will an android device work with a dead battery? - General Questions and Answers

Hi,
will an android device work with a dead battery (or with it removed) but with ac plugged in?
will your android phone still work with the battery removed and ac plugged in?
Try it and state your models.
Thanks

I don't think phones work on AC power without the battery like laptops do.
I have a Sony Xperia SL, Xperia Z Ultra, and a Xperia Tablet Z in the house and the battery is not removable in all of them, but if they are absolutely dead and I plug in the charger they first charge before switching on, if even for a few seconds.
I tried with a device called the Karbonn A5 which has a removable battery, and it didn't switch on.
I also tried with an old phone, the Sony Ericsson W810, and it didn't switch on either.

Hi,
Yes, thank for your reply.
I have a cheap China product which do not boot if the power of the battery is below 20% and start charging. So I guess the device would not possibly boot if there is no battery (or removed) when the battery is dead.
So are the Sony Xperia SL, Xperia Z Ultra, and a Xperia Tablet Z still operate with ac charging after the battery dead?
Have anyone had a device that has the battery dead?
Anyone can check the android source code to make sure about this too?

The Sony Xperia SL, Xperia Z Ultra, and a Xperia Tablet Z don't operate with ac charging after the battery is dead, but they do not need to be charged to 20% before using. They can be used just after a few seconds of charge if they are plugged in, I am guessing after 1% is charged maybe.
Check out this thread - http://www.googlenexusforum.com/forum/nexus-7-discussions/7138-can-nexus-7-run-off-ac-power.html

One day i pulled battery and my phone switch were still switch on. but get switched off quickly it was a china phone (Lemon t39)

•axe• said:
One day i pulled battery and my phone switch were still switch on. but get switched off quickly it was a china phone (Lemon t39)
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So you have android phone with its battery removable?
We want the device to be used more than that is promised, which is only 1 year warranty. The device may still be used for some other purpose such as watching videos, reading news or as a bed night/alarm clock when it is plugged on the ac adapter. Otherwise, it would become waste.

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[Q] Using an external battery to power phone: Some problems...

I hope this is the right forum for the topic.
First I want to describe my situation:
I want to use an older phone as a webcam. The webcam is outdoor and there was no power source available.
So I bought a solarpanel which has an inbuilt USB charger for phones. The solar panel works great and it doesn't take long until the battery is full.
The problem is that the sun is not allways there when you need it I needed a battery with higher capacity that the phone (webcam) can be used longer without the need to get charged. So I bought two 5000mAh batteries from Amazon, connected them in parallel and changed them with the orignal battery from the phone. (btw. the phone is a Huawei Ascend Y201 Pro)
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Do you have any idea how to solve this problem?
First I thought about buying one of these external battery packs. But all that I found have a button that has to be pressed in order to charge the battery. But that is not possible because the phone (webcam) should work autarkical.
Some have an autostart function but after the battery is full it is required to replug the phone in order to get the battery charged again. Is there an app maybe that can disconnect and reconnect the USB connection without unplugging the cable?

Very slow Charging Issue

I have a Sony Xperia Z3 D6653 and its charging is very slow. It charges 40% Max in 10 hours with phone powered off.
and its confirmed its a hardware issue because i have done everything that could be done for a software issue to resolve.
I am in pakistan and here we dont get spareparts of sony xperia phone so please help me with which part i need to replace and where can i get it. I have tried everything OEM Charger, Note 5 charger, Dock, Megnatic cable

Xperia Z3 D6603 turning off after i connect charger, don't charge battery

So from the beginning of story, my wife discharge phone to 0% and it turned off, after it turned off it wont charge any more, so i think she killed the battery. Bought new battery, replace and it's ALIVE, but when i connect fast charger xperia turning off ( puff black screen, on normal charger is showing it's charging and after 10 seconds puff same result ) and red light is on at the top ( new battery is 50% charged ).
So i connect old battery to Xperia Z1 and charge, old battery is working, connect to Z3 and it working without charger connect, when i connect charger phone turning off, and place where is connected battery to phone board getting really HOT when charger is connected.
I don't see any water on phone-board, and white marks near the place of connection with battery.
Have someone same problem, and have a solution?
graczu said:
So from the beginning of story, my wife discharge phone to 0% and it turned off, after it turned off it wont charge any more, so i think she killed the battery. Bought new battery, replace and it's ALIVE, but when i connect fast charger xperia turning off ( puff black screen, on normal charger is showing it's charging and after 10 seconds puff same result ) and red light is on at the top ( new battery is 50% charged ).
So i connect old battery to Xperia Z1 and charge, old battery is working, connect to Z3 and it working without charger connect, when i connect charger phone turning off, and place where is connected battery to phone board getting really HOT when charger is connected.
I don't see any water on phone-board, and white marks near the place of connection with battery.
Have someone same problem, and have a solution?
Click to expand...
Click to collapse
Your charging module might be damaged. Try charging using the magnetic charger, it should work.
I have the exact same problem in my Xperia Z3 D 6633 . this is how the problem started. original battery started swelling but charging while it was alright and had charged but I saw the risk in keeping a battery that is swelling all the time so got a new battery and that second battery lasted for about 2 months after which one fine day it used to discharge in just under 20 seconds from hundred percent 20 and after that gradually it will not take any charge but at least I could make it pretend charging when I connected to AC and the phone was on as long as there was external power either from the AC or Power Bank. next this second battery was changed to a third battery . with the third battery in place all I could he is a red light there is no charging at all and no charging icon and phone is totally dead with a red light.
some other place I read that there should be a voltage difference of at least 4.2 v for a battery to work in that phone and III battery initially did work but when it was discharged it will simply not charge again.
when you say the charging module is not working what exactly does it look like and can it be changed easily please help me out thank you

Battery issue

I'm owner of a Sony Xperia Z3 Compact D5833. Running kit Kat 4.4.4
It was running smoothly until i kept it in a drawer for a week or two. When i picked it up again the battery was completely drained and then i plugged it for charging there was a problem. Now what phone is doing while charging the Sony logo appears and then restart continuously again and again again and again. I opened the back cover, removed the battery and plugged it into Sony Z3 D6603 and the problem was same.
I repaired many batteries in this condition by giving shock through a usb cable by plugging in PC and used red and black cables as + - points. But this time in-vain.
How to repair does anybody know?

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