Use this Premuim battery since August 2014 my Olympus XZ-2. Meanwhile, I can say: A very good alternative to the expensive original battery. In direct comparison to the original, I can not detect any negative difference. In the summer heat, as well as outdoor in the cold in the winter - he convinces across the board. An excellent price / performance ratio. Who wants to voluntarily invest more .. For my part, a strong buy recommendation.