How to use the USB Port:
1.Follow steps 1 through 3 in How to use 12 Volt Accessory Plug.
2.Make sure the device to be operated is OFF. Plug the power cord of the device firmly into the inverter’s USB port.
3.Turn the inverter rocker switch to the ON ( I ) position. Turn the device ON.
4.To disconnect, reverse the above steps.
POWER SOURCE
Your average automobile or marine battery at full charge will provide an ample power supply to the inverter for approximately 3 hours when the engine is off. The actual length of time the inverter will function depends on the age and condition of the battery and the power demand being placed by the device being operated with the inverter.
Turn OFF the device plugged into the inverter and the inverter before starting the engine. To maintain battery power, run the engine every 2 to 3 hours for approximately 10 minutes to recharge the battery. While the