Hahnel HL-ON1 7,6V 1170mAh Li-Ion Battery type Olympus BLN-1 for OM-D E-M1, E-M5, PEN E-P5 (Accessories)
Ordered despite the initially weak reviews my battery. After the third store I can say felt that it brings at least 70% of the capacity of the original battery. As a replacement as perfectly acceptable. But not equivalent, but much cheaper.
