Powering the next generation of 36V cordless tools as well as your existing 18V gear, this is where the HiKOKI Revolution begins. The BSL36A18X represents the absolute State of the Art power source for the future of heavy duty trade power tools. Huge 1080W Power Output Battery High Powered 18650 lithium cell structure Intelligent circuitry changes voltage between 36V and 18V automatically Significantly reduces heat and stress on tool components Smart-tech Cooling Chassis, keeps cells cool under load Smart battery indicator technology Long Life - up to 1500 recharge cycles 32min Rapid Charging using Rapid Smart Charger (UC18YSL3) Intelligent Electronic Battery and Tool Protection Automatic Overload Protection shuts down the tool if overload occurs Over Discharge Protection prevents the battery from dangerous dull discharge Overcharge Protection prevents any attempt to overcharge beyond its capacity Onboard LED battery status and fault diagnosis