Tips to save on battery discharge

[CyberAngel]

(12-09-2019 07:58 PM)CyberAngel Wrote:  Buy a replacement battery from China.
A slim Samsung Galaxy S3 battery.
Recharge that one, too. Keep it in your pocket as a spare.

(it may explode, though)

I ordered a strange looking spare battery for the [Samsung Galaxy S3] HP Prime.
I hope it is the slim one that fits...