This is the replacement battery for our Programmable On-Board Glow Driver.  It is a single sub-C 2500mAh Ni-Cad cell with a Deans-type female installed to fit our Glow Driver circuit. We have chosen to use a Ni-Cad for this circuit because the performance is better than a Ni-MH for this application.  It can be charged with any Ni-Cad charger, or with a spare charger from a Hot-Shot type glow plug ignitor.  Just add a male Deans-type plug to the wires on the Hot-Shot charger and you're good to go!