Dc Operation - Honda EU2000i Owner's Manual

OPERATION

DC OPERATION

The DC receptacle should ONLY be used for charging 12-volt
automotive type batteries. The DC charging output is not regulated.
This means that the charging output is constant; it does not decrease
as the battery reaches full charge. Check the battery voltage frequently
while charging to prevent overcharging the battery.
When using the DC output, turn the Eco-Throttle switch to the OFF
position.
Connecting the battery charging cable (optional equipment):
1.Before connecting the battery charging cable to a battery that is
installed in a vehicle, disconnect the vehicle battery ground cable
from the negative (–) battery terminal.
The battery gives off explosive hydrogen
gas during normal operation.
A spark or flame can cause the battery to
explode with enough force to kill or
seriously hurt you.
Wear protective clothing and a face shield,
or have a skilled mechanic perform the
battery maintenance.
WARNING: Battery posts, terminals, and related accessories contain
lead and lead components. Wash hands after handling.
2.Plug the battery charging cable into the DC receptacle of the 
generator.
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