DEWALT's exclusive NANO-phosphate lithium-ion cells offer long battery life and durability for up to 2000 recharges! Batteries with NANO technology deliver 23X more run time vs. 18V batteries. The cordless recip saw has a DEWALT-built high-power, high-efficiency motor with electric brake to power through the toughest applications.Cordless Yes Volts 36 Stroke Length (in.) 1 1/8 Strokes Per Minute (SPM) 0-3,000 Brake Yes Battery Included Yes Additional Product Specs * 4-position keyless blade clamp for quick blade change, flush cutting and versatility * Anti-slip comfort grip for better control * 3-position adjustable shoe for adjustable depth of cut and extended blade life * Electric brake * NANO-phosphate lithium-ion battery cells