3.2V 3.7V Solar Controller Board Lithium Battery Charging …
With over‑ and over‑discharge make you do not have to add protective board on it. Circuit Board: Compatible with 3.7V lithium battery, 3.2V lithium iron battery, 6V, 12V battery. The Maximum Current of this solar controller board is 3A, and the maximum discharge current of this solar controller board is 1A