S-8172s is a SWIT patented product of separable design, which can be split into 2 parts of total 158Wh(79Wh +79Wh) capacity, with a D-tap socket for camera light or other equipments. It has a 4-level LED indicator to give you a view of remaining battery life. 

The Li-ion contents of each part of S-8172S meets the regulations of the IATA. The build-in intelligent circuit has multiple protections of abnormal current, voltage and temperature. 

S-8172S is compatible with SONY L40/L60/L90 Li-ion batteries. 

SC-304S is a 2-channel simultaneous charger for Sony and SWIT V-mount batteries, which can automatically recognize the type of battery being charged (Li-ion, Ni-MH and Ni-Cd).