The inverter may be used either while the engine is running or turned off. However, the Inverter may not operate while the engine is being started since the battery voltage can drop substantially during cranking.
The Inverter draws less than 0.2 amperes from the battery when it is not supplying power to a load. In most cases the 150W Inverter may be left connected to the battery for up to 3 hours when it is not in use since it draws so little current. If the vehicle will not be used for several days, disconnect the Inverter from the battery.
CAUTION: LOW BATTERY ALARM
An alarm will sound when the voltage from the battery drops to 10.2 volts. This indicates that the battery requires recharging. The user should stop operations at this time since the Inverter AC will shut down automatically shortly afterwards (when battery voltage drops to 9.5 volts)
NOTE: The alarm may sound momentarily when the unit is being connected to, or disconnect- ed from, the power source. This is normal and does not indicate any problem.
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