The 4-channel D-3004S V-Mount Battery Adapter from SWIT is a simultaneous charger for V-mount batteries with 1 channel discharging function. It can also be used with Li-ion, Ni-MH and Ni-Cd batteries, and can clear the memory effect of Ni-Cd batteries. The charger can self-identify Li-Ion or Ni-MH batteries and launch the compatible charging program. D-3004S features 4-level LEDs which indicates the charging status of each channel.