Bundle Star * Patona Battery for Olympus BLN-1 (real 1050mAh!) With Info Chip (latest generation 100% compatible!) To Olympus OM-D E-M5 (Electronics) 4
Very good quality and fair price. The battery charges as fast as the original without overheating. I do not know if one can squeeze the same number of shots as from the original thing but I feel more secure with some more batteries in my bag ...