Battery on S8 messing up, any ideas how to calibrate?

[delta7]

Battery drains and takes pretty long to charge. What can I do to temporarily fix this? I wanna keep this phone for another year.

 

[B. Diddy]

It's unlikely that it's a calibration problem. The battery might just be failing or defective. Does it heat up a lot when charging? Do you routinely use the phone until the battery is down to zero before recharging? Routine deep discharges of a battery can shorten its lifespan significantly.

Charge up to 100%, then let it drain to 20-30% with normal usage, without charging in between. Then show us:


1. The main Settings>Battery screen.
2. The fullscreen battery graph screen (which shows Awake time and Cell Signal Strength).
3. The Screen category (to see total Screen On time).
4. The Cell Standby category, if present (to see Time Without Signal).


You might have to install a 3rd party battery monitor, like GSam Battery Monitor, to get the Cell Signal Strength graph.