Honda Civic 2021 Owner's Manual page 187

uuInterior Lights/Interior Convenience ItemsuInterior Convenience Items
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Accessory Power Socket
The accessory power socket can be used when the ignition switch is in ACCESSORY
( q or ON w ( *1 .
*1: Models with the smart entry system have an ENGINE START/STOP button instead of an
ignition switch.
186
Open the cover to use it.
1Accessory Power Socket
NOTICE
Do not insert an automotive type cigarette lighter
element. This can overheat the power socket.
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.