This battery adaptor can quickly charge up to four NP-FZ100 Z-series batteries via AC adaptor within about 480 minutes. Power charge condition is indicated in a 3-level LED when the "remaining battery power" check button is pressed. DC OUT/CHARGE switch placed at the center of the control panel allows you to choose either supplying power from the batteries or charging the batteries. This Multi Battery Adaptor Kit can connect and supply electric power to a camera that uses either an NP-FZ100 Z-series or NP-FW50 W-series battery. By removing the cover for Z-series battery (figure [A]), the power plate (figure [B]) fits cameras compatible with W-series battery. If you remove battery protector and put battery port covers into place, Multi Battery Adaptor turns into a smaller easy-to-carry adaptor for two batteries. This battery adaptor provides three screw sockets on both top and bottom of the unit (a total of 6 sockets), allowing a flexible rig setup using a mounting plate and screws.