Buy from Amazon.com : http://fave.co/1HuYmtX

Fotodiox NP-F Battery to V-Mount Battery Converter Power Adapter for LED Studio Panels

Product Description :
Adapts inexpensive Sony NP-F batteries to replace a costly V-mount battery
Power your lights or rig setup with inexpensive and common NP-F style batteries
Fully compatible with Fotodiox LED Panel lights such as LED-500AVL LED-1000AVL LED-1000ASVL
Use two of the same size batteries for best results ie two NP-F750
24-Month Manufacturer Warranty