BOOSTERPACK MULTI-VOLT - 2 X 8AH 18V / 4AH 36V + LADER UC18YSL3 (UC18YSL3WFZ) BOOSTERPACK MULTI-VOLT - 2 X 8AH 18V / 4AH 36V + LADER UC18YSL3 (UC18YSL3WFZ)