I own a OM-D E5 which we know, the battery sucks quickly with heavy use (flash, display, standby)! So I've been looking for alternatives to the good but very expensive original battery. The quality of most replicas is very doubtful, usually without Erkennungt by Olympus charger. If they are placed on the scale and compares with the original, is often determine that they are much lighter. This is because these are installed in most cases cells with lower capacity. Therefore imprints of allegedly "XY" mAh are due to the imagination of the distributor. So now to the dot. for Olympus BLN-1. These batteries are well worth the money and have almost identical overall quality as the original. Only a pair of trips less than the original, compatible with the original Olympus charger. And all for about 25% of the original battery. Therefore, full 5 stars!