Synonymous with German quality & reliability this Ansmann branded Li-Ion digital camera battery is a cost effective & reliable alternative to the Olympus Li-42B original battery pack. Specifically designed to replace the Olympus Li-42B, this high performance Li-Ion battery pack also features built-in circuit protection for added safety. Specifications: 3.7 V / 650 m Ah / 2.0 Wh Fits the following cameras: Olympus Mju:550 WP/ 700 / 730 / 740 / 750 / 760 / 790SW / 820 / 830 Mju 720SW / 725SW / 770SW / 850SW / 840 / 1040 / 1050 / 5000 / 7000 FE20 / 160 / FE190 / FE280 / FE290 / FE300 / FE350 wide / FE340 / FE310 / FE 360 / FE-5000 / FE-3010 Nikon Coolpix S200 / S220 / S225 / S230 / S 510 / S 700 / L16 / S60 Pentax Optio M30 / M40 Optio W30 Optio V10 Fuji Finepix Z100fd / Z20fd / J10 / J150W / J110W / J100 Please Note: The above compatibility list may not be exhaustive. This battery requires charging before use.