he Xiaomi Redmi 8 is a low-budget smartphone by Xiaomi released October 2019. It has a 6.22" IPS LCD display, a 12 MP main camera, a rear-mounted fingerprint sensor, a 5000 mAh battery, and runs on a Snapdragon 439.
If you got this new in 2019 it is likely the battery is now bad. As suggested by Hampter try an adapter that you know is good on a known good outlet with a known good cable. The manufacturer's is what you should be using for that but in any case one that supplies at least the same as the one it came with. A new battery is probably what you need but check the other stuff first.
Is it decreasing when charging only when your using it?
Try a different charger, definetly another charging brick, and a drifferent outlet.
How fast odes it decrease when using it and is it faster/slower/same discharge when not charging
Hampter さんによる
If you got this new in 2019 it is likely the battery is now bad. As suggested by Hampter try an adapter that you know is good on a known good outlet with a known good cable. The manufacturer's is what you should be using for that but in any case one that supplies at least the same as the one it came with. A new battery is probably what you need but check the other stuff first.
Juan Garcia さんによる