Magnum Energy MS2012-20B MS Series 2000 Watt, 12V Inverter/100 Amp PFC Charger/2-20A AC Breakers in 20 amp Ratings, Input battery voltage range 9 - 17 VDC, Nominal AC output voltage 120 VAC, Output frequency and accuracy 60 Hz +/- 0.04%, Rated input battery current 225 ADC, Inverter efficiency (peak) 89% (MS201220B MS2012 20B MS-2012-20B MS 2012-20B)