Hi
True that is made by BT/Prime Mover and is sold to all major brand names, complete with their color of paint. Do your batteries stand on their side and are made by champion? if so a group 26 12 volt gel cell is what i use to rebuild the pack. just wire them in series- parallel, instead of series to 24vdc. and you don't even have to stand them on their side. just straighten out the bracket that goes down the center vertically..