Replacement Battery BM4E [Upgraded] for Xiaomi Pocophone F1 Battery Free Adhesive Tool

Battery has way less capacity than advertised. Say's 4000 mAh, but it's more along the lines of 2000. Not to mention, the phone turns off before the battery even drains all the way. Turns off at around 10 to 15 percent. Battery drains way too fast for the advertised capacity.EDIT: It's even worse than I had mentioned. The battery dies at around 30 percent charge then says it's at 0.

Terrible battery, it lasted less than a month and it was already swelling. Poor quality.

Whenever the charge drops to 50% the phone shuts down. When the charger is connected it starts from 0%. Dont know if i got a faulty battery.