... Charger, High frequency, switching mode battery charger 12V/4.5A,24V/2.5A,36V/1.5A,48V/1.2A High frequency, switching mode battery ... .Overload protection: charger o/p current limited automatically when overload.4.Reverse polarity protection: It will shut down when the wire ... power tool battery, Electric toys Output Voltage and Current: 12V/4.5A, 24V/2.5A, 36V/1.5A, 48V/1.2A