Synonymous with German quality & reliability this Ansmann branded Li-Ion digital camera battery is a cost effective & reliable alternative to the Sony NP-BG1 original battery pack. Specifically designed to replace the Sony NP-BG1, this high performance Li-Ion battery pack also features built-in circuit protection for added safety. Specifications: 3.7 V / 900 m Ah / 3.3 Wh Fits the following cameras: Sony Cybershot H3 / H7 / H9 Cybershot N1 / N2 Cybershot T20 / T25 / T100 Cybershot W30 / W35 / W40 / W50 / W55 / W80 / W85 / W90 / W200 / 210 / 215 / 220 / DSC- W170 / DSC- W150 / DSC-W130 / DSC-W120 / DSC-W110 Please Note: The above compatibility list may not be exhaustive. This battery requires charging before use.