While I have never stepped on a kitten in the dark, it sounds like a sure fire way to save on cat food. I don't believe in trickle chargers, unless they have a built in regulator to bring the charge rate to near zero as the battery becomes fully charged. The old Valiant battery died when I left the lights on. Charged it with jumper cables from a friend's car for about 5 minutes, and started it. The ammeter needle was pegged for maybe 30 minutes and then slowly came back down a while later. I love ammeters, as they tell you the amount of current going back into the battery --- less accessories. That's about 35 amps for a valiant. For the PT, I'd clean the battery terminals and the wires attached to the terminals. And I'd clean and grease the 2 multi ground terminals on the left front inner fender. 5/16" hex I think.