Figured today I'd see what was involved in putting the new charger in the car. Only, the batteries were dead and the old one tripped, again. A little work and I isolated *2* batteries. So either something's grounding them and I don't see it, or I've reached the end of life for this set of batteries. Yuck. I'm not ready for NiCd, NiZn or LiIon, but I don't want to buy a new set of lead batteries just now.