Batter Level Suddenly Drops to 0%

[GatsbyGlen]

I saw another thread about this for the S7, but my S9+ has recently started to do this at around 40%, it goes to zero and phone shuts off. Phone will be 2 years old in Spring. First Samsung phone, long time user of Motorola before that, and I never had that sort of battery issue with Motorola. Guess I need to buy a new battery? I also had an LG phone once before too, but that suffered the boot loop issue.

 

[mustang7757]

Yeah sounds like the battery

 

[B. Diddy]

Do you frequently let the battery drop to zero or near-zero? If so, 2 years is probably the right time for it to start exhibiting behavior like this, since frequent deep discharges can shorten the battery's lifespan.

 

[pizza_pablo]

https://www.ifixit.com/Guide/Samsung+Galaxy+S9+Plus+Battery+Replacement/117082

 

[pontiac005]

https://www.ifixit.com/Guide/Samsung+Galaxy+S9+Plus+Battery+Replacement/117082

A friend did this and he said it was real easy.

 

[Mooncatt]

Textbook symptom of a worn out battery.

As for the LG comment, their G4 and V10 phones had a design flaw causing bootloops, and are not related to the problem with the S7.