The Sony NP-FW50 Rechargeable Battery Pack is designed to provide high-stamina battery life for the Sony NEX-3, NEX-5, NEX-5N, NEX-7, A33, A55, A5100, A6000, A6300, A6400, A6500, A7, A7 Mark II, A7R, A7R Mark II, A7S, A7S Mark II, RX10, RX10 III, RX10 IV cameras.
The battery uses ActiFORCE technology for higher capacity and faster recharging time.
The hybrid lithium-ion cells suffers no ‘Memory Effect' (loss of performance on partial charge).