There is a Problem with my galaxy s8....

[Aizaz Khitran]

Hi guys..
I have run to a very big problem
The problem is that I connected a usb with otg with my mobile and started watching a movie..
The mobile Shuted down by crashing after 15 minutes..
When I tried to turn it back on its battery had jumped from 88% to 25%..
And when I started using it (the usb was already removed) it crashed again..
I put it on recharge and turned it on it was doin just normal..
Now it doesn't even turn on when not on recharge..
And works while on recharge..
It also sometimes hangs completly then i have to shut it by force by presding power and vol. Down key..

Now does anybody know where the fault has occured..And Is this problem repairable?
Help is appreciatex..

 

[Rukbat]

Charge it to 90%. Does it still refuse to turn on if you unplug the charger? Then the battery is probably shot.

(I don't know how low you normally discharge the battery, but 25% is too low. By 40% you should either charge it or turn it off.)

It could also be throwing a dendrite at 25% (see Lithium Battery Dendrite links if you're interested) but, since you should never let it get down that low, it wouldn't matter.

 

[Aizaz Khitran]

Thanks for the help buddy..

 

[Aizaz Khitran]

Should I repair it or keep using it while on recharge?