The CHG-1800 LI4 is a 4-bay full-featured battery charger for the RTS BP-240 Lithium Ion battery. This battery pack is utilized by the TR-1800 and TR-240 beltpacks. The charger offers status indicators and rapid charge capability. The CHG-1800 LI4 also offers "Intelligent Charging" optimizing the battery charge cycle and maintains the battery pack at peak capacity indefinitely.