fbroen

My battery charger/maintainer has a cigarette lighter attachment, but I have not had any luck getting the "charging" light come on through any of the 12v outlets. Is there a trick or sequence to get the car to accept the charge through the outlets?

Separately, my charger's clamps are too close together for the negative clamp to reach the designated ground post, so I have charged a few times with the negative hooked directly to battery. Is the theory against this the spark/gas risk, or is here some other reason as well -- like, say, protecting the electronics?

rnl

Polarity correct? A cigarette lighter 12v adapter should work. Put charger in car socket before applying line power to charger

fbroen

Will try in that order report back. Thx.

fbroen

No luck still. Maybe I will just break down and buy one of the Porsche 12-volt outlet chargers...

TSpyder

Perhaps the cig lighter depowers when the car goes to sleep preventing charging through it. Did you try using the charger when you're sure the lighter is powered?

I bought this charger a few years ago...

http://www.amazon.com/Multi-12-Volt-.../dp/B000FQBWCY

That was before I owned a P-car (the 991 is my first Porsche), but I read that this unit is simply rebadged and sold by Porsche for more $$. Anyway, I've used it on all my cars (except the 991 which hasn't sat idle long enough to require a charge) and it performs flawlessly.

Spyder

fbroen

Power is present in the outlet.

Yes, that does look like the "Porsche" charger. Good tip, thank you.