I have this battery - like many others certainly - into ordered at random, since no reviews were available.
So I write now one.
I run now 2 pieces of this model in the battery grip my Olympus E-5th
They were very often fully charged, but also frequently recharged.
So far, I can see no drop of power and the batteries last longer than the originals.
I can only express a positive opinion - best order now a few more for the price. For he is unbeatable.