Bundle - 2x Battery NP-FW50 with Infochip &middot; 100% compatible with Sony NEX-3 | NEX-3A | NEX-3D | NEX-3K | NEX-5 | NEX-5A | NEX-5D | NEX-5H | NEX-5K | NEX-6 | NEX-7 | Sony Alpha: 33 (SLT-A33) | 37 (SLT-A37) | 55 (SLT-A55) Lithium-Ion Technology - No memory effect - Capacity: 1200mAh, Voltage: 7.2V Compatible Battery Part Number: Sony NP-FW50 NPFW50 Full Coded Version: Show Battery Level in Camera LCD - can be charged by your original Charger Design and technical concept by ExtremeWolf, Germany.