The Hooyman 40v 2AH Lithium-Ion delivers a longer run time, higher performance and fade-free power with no memory loss, unlike other conventional batteries. Snaps in and out of saw easily and includes a battery charge indicator for power level checks. Charges in around 60 minutes. Up to 70 minutes of power 40-Volt high power rechargeable 2Ah Lithium-Ion battery LED charge indicators Weight: 1.lbs/0.7kgs 40 percent Longer life than conventional batteries