S-3802A is a portable 2-channel sequential charger for SWIT gold mount batteries, which can automatically recognize the type of battery being charged (Li-ion, Ni-HM and Ni-Cd). S-3802A also can be used as an AC adaptor through its 4-pin XLR DC output. S-8172A is the split style Gold-mount battery, which can be split into 2 parts of total 160Wh capacity. It meets the regulations of IATA. The 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.