Lanparte NP-FW50 FW50P FW-50P Dummy Battery Pack Coupler for Sony a5100 A7S Camera For Sony a5100 NEX5T NEX5R NEX-F3 X-7 NEX6 NEX-5N NEX5C NEX3N NEX3CV Camera Another end connect to DC plug(input 7.4V-8.4V)