why my battery draining so fast?

[Android Central Question]

I have Huawei P10 plus. It worked well for 1 year. Now it's battery is draining very fast. For eg: if I click one single picture it switch off. And when I put in charge it immediately shows 30% charging. I am confused is it system problem or battery problem?

 

[B. Diddy]

Welcome to Android Central! Does this also happen in Safe Mode? https://thedroidguy.com/2018/08/boo...che-partition-factory-reset-tutorials-1072023. If so, then the battery is probably defective or damaged. Is it still under warranty?

 

[Rukbat]

One year? How low do you drain the battery before charging it? You should never let it drop below 40%.