The Olympus HLD-9 Power Battery Grip gives you the comfort of doing events and not having to worry with battery levels. Optional is the AC-5 Adapter that can be used for studio photography or other situations when using the camera for long periods of time. The HLD-9 Power Battery Grip is dedicated to the Olympus OM-D E M1 Mark II mirrorless camera featuring a new ergonomic design. The user will have double the power of one BLH-1 Lithium Ion rechargeable battery in the camera body and a further in the HLD-9.