S-8172A is the split style Gold-mount battery, which can be split into 2 parts of total 158Wh capacity. It meets the regulations of the International Air Transport Association. The D-tap DC output makes it possible to power one's camera and other equipment simultaneously. It has a 4-level LED indicator to give the user a view of remaining power. The built-in intelligent circuit has multiple protections of abnormal current, voltage and temperature. SC-304A is a 2-channel simultaneous charger for gold mount batteries, which can automatically recognize the type of battery being charged (Li-ion, Ni-MH and Ni-Cd).