With an additional BLS-50 you will never miss a shoot caused by an empty battery. This battery contains 1175 mAh of power (more than the BLS-5 battery, which it replaces). This battery is compatible with the following Olympus cameras: OM-D E-M10, all Olympus PEN cameras (excluding the E-P5), Stylus 1, E-410/420/450 and E-600/620.