S-8160A is a lightweight 190Wh Gold-mount battery, it has a 4-level LED indicator to give the user a view of remaining power before mounting to camera, and a connecting shoe for wireless receiver S-7002. 

S-3802A is a portable 2-channel sequential charger for SWIT Gold Mount batteries only, 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. The 4-pin XLR power cable S-7102.