D-3004S is a 4-channel simultaneous charger for V-mount batteries, with 1 channel discharging function. It will self-identify Li-Ion / Ni-MH batteries, and launch the compatible charging program. The 4-level LEDs indicate the charging status of each channel. D-3004S is compatible with Sony and SWIT V-Mount batteries, including Li-ion, Ni-MH and Ni-Cd batteries, and can clear the memory effect of Ni-Cd batteries.<br><br>S-8172S is a split style V-Mount battery, which can be split into 2 parts of total 160Wh (80Wh+80Wh) capacity. This product meets the regulations of IATA. Its D-tap DC output makes it possible to power the camera and other equipment simultaneously. It has a 4-level LED indicator to give the user a view of remaining power and a connecting shoe. S-8172S is compatible with SONY L40/L60/L90 Li-ion batteries.