Excerpt: The build quality of this Nikon battery pack is far superior to third party brands of this type. Heavy duty and professional, this battery pack doubles battery life, and allows for vertical photography with ease. High price, but worth the piece of mind that the product will work on command.
Excerpt: I've been doing an extensive research on whether to buy this grip or a 3rd party one and I decided to buy this one. Even though it costs $-$ more I thought that it would be wiser to invest in an authentic product rather than in some cheap copy. One of the driving factors in my decision was that the 3rd party battery grips don't have the ability to switch from an internal battery to the external one (or vice versa) when the first designated battery runs out.
Pros: Easy to Install, Long-Lasting, Reliable, Solid Construction
Excerpt: The MB-D11 Nikon battery pack holds one EL15 lithium ion battery for the Nikon D7000 body so that you can have two fully charged batteries on board the camera. The Battery Pack also comes with a slide in holder for 6 AA batteries but I'd not expect to get the same amount of power from them as an EN-EL15 Li-Ion battery. The MB-D11 also can double as a convenient portrait mode grip with main dial, and AE-L/AF-L, and quick dial controls.
Pros: Easy to Install, Fast Recharge, Long-Lasting, Reliable, Solid Construction