The accessory power socket can be used when the ignition switch is in
ACCESSORY
or ON
*1.
Open the cover to use it.
NOTICE
Do not insert an automotive type cigarette lighter element: The power socket can overheat.
The accessory power socket is designed to supply power for 12 volt DC accessories that are rated 180 watts (15 amps) or less.
To prevent battery drain, use the power socket only when the engine is running.
Honda Civic Owners Manual. Automatic Power Off
If you leave the vehicle for 30 to 60 minutes with the shift lever in P*1 and
the
power mode in ACCESSORY, the vehicle automatically goes into the mode similar to
VEHICLE OFF (LOCK) to avoid draining the battery.
When in this mode:
Except U.S. continuously variable transmission models
The s ...