Technical Specification Model 500VA 650VA 800VA 1000VA 1200VA 1500VA Output power 300W 390W 480W 600W 720W 900W AC Input Voltage range 165V~275V / 90V-135V Output Voltage 220V / 110V Output Frequency 50/60Hz Waveform Square wave Transfer Time Less than 6ms DC voltage 12VDC 12VDC 12VDC 24VDC 24VDC 24VDC Battery capacity 7AH*1 8AH*1 9AH*1 7AH*2 8AH*2 9AH*2 Backup time Full load >3min, half load >12min Battery recharge time >8-12hours Output overload The built-in current limiting circuit will automatically and rapidly lock out the machine so as to protect the inverter when overloaded Automatic Charge When UPS off mode, UPS will automatically charge battery . Battery low voltage When the battery voltage drops to a curtain value ,the UPS will automatically lock out the machine so as to protect the battery from over discharging Withstand voltage strength 1500V1min peak surge through Leakage current to ground <3.5mA Temperature -20'C~40'C Relative humidity 20~90% Atmospheric pressure 86~106kpa