About the advantages of handling and the mechanical stability of the battery handle is here already all been said. The BL-5 is a cover, which also serves as an adapter to insert the battery of D4 in the battery grip the D800 can. For this, the snap of the adapter is snapped into the lugs of the battery. Both then form a mechanical unit. For storage, a soft bag is included to fit into the adapter and battery in the mounted state. With several batteries can indeed replace the adapter. But is more convenient, each to use a different Adapter class per battery. With its high price, the price of the adapter plays a subordinate role. The adapter is made of a sturdy plastic with a metal plate on the front of the couples the battery. Nevertheless, the adapter makes a stable impression in accordance with the usual Nikon quality in the professional segment. The only complaint is the high price of batteries EN-type EL18 and the required special charger.
