twinkle May 23, 2016
Bit late now but ---------

Most 24 volt systems use 7s packs
These work out about 3.7 x 7 v ( 25.9 v ) rising to 4.2 x 7 ( 29.4 v ) as they come off charge BUT and there is always a but these batteries would need their own BMS and correct charger or they COULD EXPLODE / CATCH FIRE