![Promaster Li-ion Battery for Olympus BLH-1 Promaster Li-ion Battery for Olympus BLH-1](https://cdn11.bigcommerce.com/s-f9fok/images/stencil/370x488/products/19632/44368/4966__26605.1606065548.jpg?c=2)
Dedicated to the Olympus OM-D E-M1 Mark II mirrorless camera, the 7.4V, 1720mAh BLH-1 Lithium-Ion Battery is a spare or replacement power source for the one originally included with the camera. Lithium-ion batteries are long-lasting power sources that can be charged or discharged continuously without developing memory effect. It can be charged with the BCH-1 Battery Charger.