The Sony NP-FZ100 Quad Charger/AC Adapter serves as both a rapid charger and a power source for devices that use Sony NP-FZ100 batteries. This comes with 2 batteries but it can charge/power from 4 batteries. When you are done charging, simply switch the charger from CHARGE mode to DC OUT mode and install the dummy battery so that you can power your camera on the go. This charger is equipped with 6 x 1/4"-20 mounting ports for easy connection to a variety of rigs. It also features dual usb ports so that you can power other devices in addition to your camera. The Sony NP-FZ100 Quad Charger/AC Adapter is essential for long events and other all-day shooting projects.