Synonymous with German quality & reliability this Ansmann branded Li-Ion digital camera battery is a cost effective & reliable alternative to the Sony NP-FM55H original battery pack. Specifically designed to replace the Sony NP-FM55H, this high performance Li-Ion battery pack also features built-in circuit protection for added safety. Specifications: 7.4 V / 1450 m Ah / 10.7 Wh Fits the following cameras: Sony Alpha S100 DSC R-1 Cybershot F828 Cybershot DSC F707 / F717 Please Note: The above compatibility list may not be exhaustive. This battery requires charging before use.