Charging car battery through 12v cigarette lighter socket

[Philip]

Hi. I would like to ask if I could charge my car battery via cigarette lighter (Peugeot 508 2015).

Since I drive my car only once in a month and freezing temperatures are approaching, I am little bit concerned. Lights in my car are already flickering when starting engine on.

Is this type even possible and safe way to charge?

Thank you for answering. 

[Havlicek.Lukas]

NO

The cigarette lighter only works with the key in the ignition

[Brian Edward]

Yes, you can charge a car battery through the cigarette lighter socket. However, ensure the lighter socket is “live”, keep the charge rate low to avoid blowing a fuse, and use a suitable charger adapter. Charge for about six hours.

Note that this method is not usually recommended due to the thin wiring and limited power of these outlets.