Power Source - Schumacher PID-200 Owner's Manual

How to use the USB Port:
1. Follow steps 1 through  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.
. Turn the inverter rocker switch to the ON ( I ) position.
Turn the device ON.
4. To disconnect, reverse the above steps.
Your average automobile or marine battery at full charge
will provide an ample power supply to the inverter for
approximately  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  hours for approximately
10 minutes to recharge the battery. While the PID-200
draws very low amperage when not in use, it should be
unplugged to avoid battery drain.

POWER SOURCE

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