u/EmilioCube

Recently I got myself a used S10 LTE on eBay.

It shows some very weird behaviour: roughly one out of three nights it drains its battery to 0% in a very short period of time. Sometimes the Watch gets really warm and the battery dies really quickly when I turn on some music just before sleeping (Sleep focus enabled, music downloaded to watch and WiFi/LTE off), mostly it will randomly die mid night. Battery capacity is 89% (has been the same since I got it two months ago)

Edit: I usually sleep from 12PM to 9AM

I have tried:

updating

factory resetting

Airplane mode, WiFi/LTE/BT off

Background app refresh off

Anything I’m missing?

Sadly I recognised the issue too late after purchase, I can’t return it.