Keep Cig Lighter/USB Port On With Car Off

#1
Hi all: I am wondering if it is possible to keep the cigarette lighter and USB port on with the car off. I want to charge my cell phone, but when I put the key to the accessories position the dash lights and everything come on and I am worried about draining my battery. Any way around this?
 
#2
There's is no setting, if that's what your looking for.
You can add an aftermarket setup and run the power straight to your car battery.
I'm working on adding USB and a power outlet to the back of the center console. I want this to turn on and off with the car though. So I will be installing a relay somewhere to control this.
 
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