(2-Pack) NP-FW50 Camera Battery for Sony A7R Mark II, A7R, A7S Mark II, A7S, A7 Mark II, A7, Alpha NEX-3, NEX-5, NEX-6, NEX-7 Series, Alpha SLT-A33, Alpha SLT-A55 Overcharging Protection 100% Compatible with Genuine Sony NP-FW Batteries Warranty: One Year ( 12 Months ) - Full replacement of your LP-E6 battery if you have any issues! Capacity :1080 mAh - Designed and tested for high performance NO Memory Effect - You can recharge a partially drained battery without losing performance