AIMS Power PIC100012120S Pure Sine Inverter Charger, 1000 Watt continuous power, 2000 Watt surge power capability (peak power), Selectable 25A or 55A Battery Charger, Built in Transfer Switch, 12 Volt DC input, Pure sine wave Key Features 1000 Watt continuous power 2000 Watt surge power capability (peak power) Selectable 25A or 55A Battery Charger Built in Transfer Switch 12 Volt DC input Pure sine wave Conformal Coated Circuit Board AC Direct Connect Terminal Block Efficiency 86% - 90% Over load and Short circuit protection On/off switch Dual cooling fans thermally controlled Instruction manual Specifications Battery Charge Current 25A or 55A (optional) AC/Inverter Transfer Time: < 20ms DC input / operating voltage: 10-16 Volts AC Input Voltage Range: 120 Volts AC +/- 10% Output voltage: 120 Volts AC Output frequency: 60 Hz Output wave form: pure sine wave (THD