Prima replacement

Have held for a replacement battery for my D5100 out, which is also able to function without having to use the battery grip. This is in 5100, unfortunately not without problems because of eigebauten chips in battery. This battery was, was used and accepted by the camera as an IO. Prima, especially since the price does not even correspond to half of the original. If in practice it is still Standfest there is nothing to complain about. So far, my expectations are exceeded.