I used to buy those chargers often for my friends as a good and cheap charger.
However on the latest batch I received, I noticed that it started to charge with an extremely high voltage. With all 4 units, it goes up to 4.30V on most slots while charging, even often triggering the protection of my batteries, leading to an over-full battery (it has 4.27V after finishing) in a slot with ‘Null’ display (because of tripped overvoltage protection) and the charger applies a constant 5V to that battery because it seems to constantly want to revive the battery….
Anyone else seeing this behavior?? Won’t be buying them anymore I fear