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Phone shut down randomly

P

PetahSchwetah

Lurker
Lately in Sweden the media has written about accidents where phone batteries and chargers have exploded or caught fire when charging during the night. Therefore I don't charge during the night anymore. So the other night I was charging my one year old GS5 phone before going to bed. I stopped charging at 50 % or so (I didn't have time to charge it fully). I turned on power saving mode with the "restrict background data" to save as much battery as possible. I also set my alarm. Then I locked the phone and went to sleep.

The next day I woke up late. My alarm did not go off. Very strange, I thought. I stretched our for my phone and realised it was turned off. It had no battery left. So I charged it and turned it on to look into battery history. I was really shocked and confused at what I saw:

The battery history showed that shortly after I stopped charging and had turned on the powe rsaving mode, the battery drained to 0 % in matter of a minute or so. Very strange. This has happened to me before once.

My battery overall has been draining pretty fast lately, but not in this kind of scale. What is wrong? Is it my battery or my phone?

The telephone is not rooted and is a Galaxy S5 from August 2014. The battery and charger are all original products from Samsung.

Here's a link to the screenshots I took (scroll down to see them all): http://imgur.com/a/YU10l

Thanks!
 
I never bother with the Power Saving mode...

I just turn off data and WiFi, and that is the same thing. In fact, I never turn on DATA or WiFi unless there is a need to access the internet. I'm retired, have no use for social apps or push notifications.

my S5 is from April 2014 on OEM battery, I have a Qi wireless charger installed, and leave it on the charging pad all night and never give it a thought. I took the OEM charger module and used it to supply the Qi pad. Qi pads charge at about ~700 mA which vastly reduces the chance of an overheated battery.

the charger will automatically taper the charge rate down, so I don't see a need to worry about it.
some have had a fire, but not that many really.

I can understand someone habitually running a battery nearly to zero percent, and then putting it on the OEM charger which will push 2.1 amps into the battery. Now that is guaranteed to make the battery and phone get hot.

for that reason, I have an alarm set to tell me "Battery Low" at 39%, and then I put it on a charging pad as is convenient. I have 3 charging pads scattered around, so I can lay the phone on a pad almost anytime I am sitting down at home.

if I get into a long conversation, I lay the phone on a charging pad..... I usually do my long drawn out telco calls in my office room so that I can play with my computer while talking... I moderate a forum, so it is easy to do that way.
 
Hi, I have a spare battery and a wall charger, I keep one battery fully charged with the wall charger, and just swap it over when the one I am using gets low, takes less than a minute. I also carry the spare battery with me in a pouch if I am going to be out for a while, it's slim and unobtrusive. Phil
 
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