Samlex SAM-250-12 12-Volt 250-watt DC to AC Inverter. Power inverter, Inverts 12 Volt DC To 115 Volt AC, 250 Watt, 25 Amp continuous output. 90 percent efficiency. Item specifications are 1 AC Outlet, Thermal, Battery Overload, Short Circuit, Earth Fault Protection Circuit, Low Battery Input Alarm. Item dimensions are 5.9 Inch Length x 4-1/2 Inch Width x 1.8 Inch Height. Also has a USB charging port.