The positive and negative poles of the battery charger are not completely unified. It is safe to connect the positive and negative poles of the battery when charging, but the charger may blow the fuse, seriously damaging the entire charger. Some chargers typically have a “polarity” identification circuit that can automatically identify polarity. When the polarity is incorrect, the charger stops working and has no effect on the battery.
Is it harmful to lithium battery if the positive and negative poles are opposite when charging?
Introduction Is it dangerous if the positive and negative poles are opposite each other of the lithium battery while charging? The positive and negative poles of the battery charger are not completely unified. There is no danger in connecting the positive and negative