the Battery Charger circuit (lead acid SLA) L200 regulator chip on the circuit board resistor and the diode on the positive 1.3 Ah or 7AH batteries or you can charge with the change of the commutator of the PCB... Electronics Projects, 12V 7ah 1.3Ah battery charging regulator circuit with L200 "battery charger circuit, power electronic projects, " Date 2019/08/04