The BL-3 is a Battery Chamber Cover for the MB-D10 Multi-Power Battery Pack that allows the use of an EN-EL4/EN-EL4a battery with the D7000, D300S and D300; and for the MB-40 Multi-Power Battery Pack, to use with the F6.

Compatible Battery Grip / Multi Battery Power Pack:
MB-40 (F6)
MB-D10 (D7000, D300S, D300)

Item Includes:

1 x BL-3 Battery Chamber Cover

Note: The battery doesn’t include.