【Powerful Battery Capacity】Two 7.4V Li-ion 1950mAh batteries, professional replacement of Sony NP-FW50 batteries. Designed specifically for your digital camera, you will never miss a moment. | 【Standard Compatibility】 Our NP-FW50 battery is compatible with Sony Alpha A3000, A50O0, A5100, A6000, A6300, A6400, A650O，A7, A7l, A7S, A7SII, A7R, A7RIl, SLT-A33, A35, A37, A55, RX10, RX10iI, RX10 IIl, RX10 IV, NEX-3/5/7 series, ZV-E10 and more. | 【4 in 1 Multi-function Charging Options】 This battery case not only as camera batteries, also could as a storage case to store two packs batteries, and also is two SD cards holder case. What's more, have a phone power bank function. Give you a complete backup battery and portable charger solution.(Note: This portable charger function requires NP-FW50 batteries as a power source.) | 【Multi-Protection】 The charging case will store your battery properly, and there is also an SD card slot for storing your SD card. Prevent dust and debris from entering the battery and SD card during daily or traveling. | 【Friendly Service】30 days free refund and 1 year warranty. Lifetime service and 24 hours (working day) quick and friendly response. Any questions or suggestions, please contact us via Amazon.