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Battery from 74% to 0% in 1 second

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By Allewar, Senior Member on 27th November 2013, 03:08 PM
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Yesterday I experienced a weird behaviour...
I was using my Moto G and it was with 74% battery. I connected it to my macbook using the usb cable and when I disconnected it the battery instantly dropped to 0% and the phone turned off!



After that I charged it again and so far so good. But I wonder what could have caused this behaviour?
I have never saw something like that before.
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27th November 2013, 08:20 PM |#2  
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I had the same problem a few hours ago. It suddenly dropped and shut down itself. I started the phone again and it is still at 1% since 5 hours. I guess this is related to a bad battery calibration because I've unplugged it during the first charge for a moment (I have the phone since yesterday).
27th November 2013, 08:25 PM |#3  
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i used to have the exact same issue with my Galaxy S2. it would freeze and then reboot or i would have to force restart only to lose about 50% battery. when i sent it back to Samsung, i think they replaced a circuit inside.
28th November 2013, 01:10 AM |#4  
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It's a new phone it could be broken

Sent from my Nexus 5 using Tapatalk
29th November 2013, 02:08 PM |#5  
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Quote:
Originally Posted by mattrb

It's a new phone it could be broken

Sent from my Nexus 5 using Tapatalk

Went to sleep last night, phone at 78%, woke up, phone dead. It won't charge either.
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29th November 2013, 02:10 PM |#6  
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Maybe you should send it in to get it looked at by someone

Sent from my GT-I9505 using xda app-developers app
29th November 2013, 02:11 PM |#7  
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Quote:
Originally Posted by nzshock

Maybe you should send it in to get it looked at by someone

Sent from my GT-I9505 using xda app-developers app

I'll be sending it back for a return, but worried about private data on the phone that I can't clear.

edit: I managed to boot it up and do a factory reset.
Last edited by theoneofgod; 29th November 2013 at 02:19 PM.
30th November 2013, 02:38 AM |#8  
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Got a refund.

Sent from my HUAWEI Y300-0100 using xda app-developers app
30th November 2013, 03:10 AM |#9  
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Mine seems to be working just fine now.

Sent from my Moto G using Tapatalk
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30th November 2013, 10:11 AM |#10  
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I could always get another. The issue may haunt the device over time, it's not worth it for such a day old phone.

Sent from my HUAWEI Y300-0100 using xda app-developers app
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3rd December 2013, 03:21 PM |#11  
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I had exactly the same issue yesterday.

I had the phone attached to my Win 7 laptop with USB cable (in USB debugging mode)
When I took the cable out the battery went from 52% to 0%.
I was using the white USB cable that came with the phone, have the official Motorola Device Manager which installed Motorola device drivers v 6.3.0. The USB ports are all v3.0

As this issue happened to 2 of us when detaching from USB ports, could something weird be happening like the phones battery is somehow being drained and trying to charge the laptop's battery? Or could the USB cable be faulty?
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