I've got one of those booster boxes that's used for jump starting cars. It was powered by one large 12V gelcell, now dead and not chargeable. I have two 12V gellcels, each of which is much smaller. A digital VOM reads them at within about .03 volts of one another. I was thinking of connecting them in parallel. Aside from the issue of whether the connectors can handle the amperage, I was trying to think of how this would work out. Any ideas? Thanks.