Post by
tdown »
https://forums.nicoclub.com/tdown-u128044.html
Sun Nov 22, 2009 1:25 pm
It usually depends on where the manufacturer decides whether the 12 volt outlets will get power from a constant 12 volt source or from the ignition being turned to the ACC or ON position. Most Nissans and Infinti's i've owned require the key be in the accessory position before the 12 volt outlet will get power. Some American cars ive owned get constant 12 volt power from the battery and will be able to charge anytime. This is bad if you leave something plugged in that can draw power from the battery when the car is unattended for too long. It can eventually drain the battery.