The 4.0 Ah ARC Lithium? Battery is equipped with an upgraded fuel gauge. you can now see how much battery power you have left in 20% increments. The ARC Lithium? battery technology is the industry��s most advanced; equipped with patented Keep Cool Cell Technology; which keeps the cells cool and prolongs the life of the battery. Compatible with all EGO products Recharges in 1 hour and 40 minutes
