Nikon MB-D10, Multi-Power Battery Pack for the D-300 & D700 Digital Camera
Most Powerful Battery Pack Up To Date
Pros: 2500 shot in one charge, Reliable, Fast Recharge, Accept EN-EL4a Batt, Navagation Buttons, Balance heavy lenses, Easy to Install, All metal construction
Cons: Adds a lot weight to D700, Bit pricey
Best Uses: Balanced camera weight, Back Up, Extended batt life
Describe Yourself: Pro Photographer
The grip is essential for your D700/D300 if you are shooting on a daily basis, with an adapter, it allows you to put the most powerful Nikon EN-EL4a battery on your D700/300, thus allow uber extended shooting times.
It’s constructed of all metal, not like any other cheap battery grips you see that’s made with all plastic. It fits extremely well on D700/D300. The 5-way navigation button on the grip provide extra option for navigating menus and autofocus points.
Highly recommended. Without it the D700, D300 wouldn’t be your D700 or D300.