View Full Version : Car Settings Keeper 9V/12V

01-15-2012, 03:11 AM
I just saw one of these in the store today: http://www.ebay.com/itm/12V-Automotive-Settings-Keeper-w-9V-Battery-/170759588809?pt=LH_DefaultDomain_0&hash=item27c2108bc9

Basically, you plug a 9V battery into your cigarette lighter (oops, power point) to keep your radio, seat, gps, whatever memory settings alive while you disconnect your battery. BUT your ignition has to be in the "accessory" position for the socket to be connected to the battery circuit, plus they warn you to pull all fuses for dome lights & anything else that might try to connect to 12V. Sounds like a lot of work to me.

Interesting concept, but more trouble than it's worth. I guess I'll just manually reset my clock. Or temp connect a 12V gel cell across the battery terminals.

I think the people who are tempted to buy this wouldn't know which fuses to pull anyway.

01-15-2012, 08:33 AM
Honestly, I don't remember the last time the battery had to come out of my car. I might have to pass on this one. :-|


01-15-2012, 12:15 PM
Seems like to me if you pull the fuse to the radio (or any thing else for that matter) you still disrupt power with or without an auxiliary supply plugged in. Now having said that it would be handy for when replacing the battery. I have 2 older vehicles that I recently replaced the batteries in and I could see the benefit there.


01-15-2012, 04:19 PM
Use booster cables from another car battery to your car's battery cables during the switchover. Much simpler - no fuses to pull.