These batteries are used with JVC's GY-HM600 GY-HM650 GY-HMQ10U GY-HM200 and GY-LS300 cameras and JVC ProHD DT-X Series of field monitors. The TC200-i-TDM has an LCD screen on the front panel that displays charge status in volts amp hours and percentage of charge that's estimated using a proprietary algorithm. There's also an auto-detecting USB port for charging/powering mobile devices at the same time as you charge your batteries. The TDM feature cycles the battery (fully charges and discharges it) and then provides a report on its capacity. The TC200-i-TDM has fully independent channels and provides simultaneous charging of both batteries. Based on a capacity of 5600mAh it delivers a complete charge in approximately 3.5 hours for both batteries or when you charge a single battery. With the battery plates built in the battery contacts are ensured to remain more intact. The charger comes with a U.S. power cord and supports worldwide power input via optional plug adapters as well as 12 VDC car lighter power via an optional car lighter adapter (Dolgin Engineering model # DE CAR 12).