Anybody try making an adapter to allow charging telephone battery packs? The terminals on the battery pack are on the back and are the pressure type. If I take it apart, I destroy the battery. The handset has two metal tabs at the base which I can attach alligator clips to. The problem is on the mh-c808m charger - the negative terminals extend out enough that I can attach an alligator clip to but I can't do the same with the positive terminals. I figure an adapter about the size of a D cell with metal tabs at the ends that extend out so that I can attach alligator clips would work.
Anybody seen anything like that? Good idea? Bad idea?
One easy solution would be to put rare earth magnets in the jaws of your alligator clips, turning them into magnetic leads (no dummy cells required.) I think 1/8 inch diameter cylinders would be ideal because they're around the size of a AAA's positive button and could be mounted in different directions, but I haven't tried it yet. Others around here would probably know better than me. (I've seen posts about soldering and welding magnets to wires, and there are "Magleads" out there, but they're a bit spendy.)
My concern would be for the battery packs since they are wired in series. You would have to cut two holes in the shrink-wrap to have access to the single cells inside a 3-cell pack (as our chargers are only meant to handle one cell per channel.) I think this would be a clever way to condition or charge one cell at a time inside the pack, but there is the possibility of overheating because of the plastic enclosure and the fact it's far away from the charger's temperature sensors. At least you wouldn't have to take the pack apart.