Battery 6 Volt 310AH Wet 56391391 for Advance CMAX 28ST, Advance Adgressor 2820D, Advance 34RST D, Advance Adhancer R28-C, Advance Warrior 28D, Advance Advenger 2400D, Advance Convertamatic 285LX, Advance Convertamatic 265LX, Advance AquaRide SE, Advance 1300 B-ECO, Advance Adhancer W28-C and W32-C, Warrior ST and EcoFlex, Advance ConvertaMAX 20, Advance ConvertMAX 20-26 BA 550-650, Boost 32 Automatic Scrubber, Focus S28 S33 S38, Boost 28 Automatic Scrubber, Focus S28 L28 WB, Encore S30 and L30, Encore S28XP S33XP S38XP, Encore L26 Cylindrical, Encore S2426 L2426, Encore S30 and L30, and Encore S28-L28 S33-L33 S38-L38.