Amazon.com : NP-FW50 Battery, Pickle Power 2 x 1500mAh Batteries for Sony Alpha A6500, A6400, A6300, A6000, A3000, A5000, A5100, A7II, A7RII, A7, RX10 NEX-3/5/7 Series Camera, with Battery Storage Case :
Sony Alpha NEX-5N Battery Replacement - iFixit Repair Guide