Firman H05753 Owner's Manual page 34

Battery Charging & Maintenance
The battery powers up the starter motor and the control
module in this generator. This product is equipped with
an automatic battery charging circuit. The battery will
receive charging voltage when the engine is running.
The battery will maintain a proper charge if the unit is
used on a regular basis (about once every two weeks).
If it is used less frequently, the battery should be connected
to a trickle charger (not included) or battery maintainer (not
included) to keep the battery properly charged. If the
battery is not able to start the engine, it can be started
manually only on "GAS" position by pulling the engine
recoil cord. If the battery voltage is extremely low, the
charging circuit may not be able to re-charge the battery.
In this case, the battery must be connected to a standard
automotive style battery charger for re-charging before
it can be used.
WARNING
Generator exhaust contains odorless and
colorless carbon monoxide gas.
To avoid accidental or unintended ignition of
your generator during periods of storage, the
following precautions should be followed:
When storing the generator for short or extended
periods of time make sure that the fuel selector
switch is in the "OFF" position and the battery
leads have been disconnected from the battery.
English
Page 32
Customer Service: 1-844-FIRMAN1