Amptronix 12V 150W Pure Sinewave Power Inverter (ATS150-12A) Continuous Output Power 150W; Surge Power 300W Output Voltage 115V+/-3% / 240V+/-3% Harmonic Distortion &lt;3%; Max Efficiency 85% No Load Current Draw 0.5A Low Battery Alarm 10.7V; Low battery Shut Down 10V