Reviewed by 2 customers
Had the opportunity to use the Nikon replacement battery holder with the Flashpoint equivalent magnesium grip because, as it turns out, the weak point on the Flashpoint is the latch on the battery holder. Fits perfectly.
Yep, it's is a battery holder. It is hard to say more. If you use an MBD-12 batter pack for a Nikon D800 it is very conventient to have a spare battery charged and packaged in this holder. If not, it is not so useful.