3.7v lithium battery should be charged with how much voltage

- Oct 18, 2019-

Generally, a 3.7v lithium battery needs to have a "protective board" for overcharging and overdischarging. If the battery has no protective board, it only uses a charging voltage of about 4.2v, because the ideal full charging voltage of the lithium battery is 4.2v, and the voltage exceeds 4.2v. Damage to the battery, use this method to charge while monitoring the condition of the battery.

There is a protection board that can be used with 5v (4.8 to 5.2), a computer USB 5v or a mobile 5v charger.