After the original battery BLM-1 Olympus is quite expensive to create, I had two years ago this Hama - ordered replacement battery and regularly used in my time acquired E-500. Furthermore I am very happy because when I read the reviews for the other low-cost spare battery, to deliver the consistently poor performance, to defects, I have met with the Hama the right decision. With respect to the charging time and the duration of use is determined at the original battery no difference, I photographed a lot and like in the last two years! And even now, in my E-3, the Hama works flawlessly! Who the original but is too expensive, but who do not yet want to compromise on quality, the I recommend this one!