The Milwaukee M18 FSX-121C FUEL™ Super SAWZALL® is supplied with 1 x 18V REDLITHIUM-ION™ HIGH OUTPUT™ 12.0Ah battery pack that provides superior pack construction, electronics and fade-free performance. Delivers the power to cut at the same speed as an equivalent AC reciprocating saw. Will cut 150 pieces of 290 x 45mm pine on one 12.0Ah battery charge.