i've got a pair of 12v 26ah SLAs in good nick. what would be the easiest way to get them in the car hooked up to accessories output? surely not as simple as hooking the terminals up to the car battery?
looking to run stereo, cig lighter accessories off 'em for long trips, eg being able to leave the drinks fridge on without draining the main battery when you stop for food, and without buggering around with wires and plugs if possible.
will the batt blow up or charge if hooked up in parallel to car battery?