I did get the MB-D10 but I'll have to wait a few months for the EN-EL4a & charger (almost as much for those as the grip itself!) . . . not to mention the new chamber cover. An extra EN-EL3e will have to do for now.
As you are painfully aware, the MB-D10 is but a fraction of the cost of the 'full meal deal' which includes the battery cover (BL-3), battery (EN-EL4a), and charger (MH-21 or MH-22).
First off, the AA path will indeed enable 8FPS on the D700. You won't get 600 frames plus chimp time with the AAs, but it will be much lower cost than the full-boat Nikon kit. You will need some AA NiMH cells, and a proper charger (if you don't already have one).
If you rarely use the grip, you're likely to prefer the 2000mAH low-self-discharge batteries which can wait for months for you to load them for a shooting session, without losing much of their charge. If you plan on shooting weddings, you're likely to prefer the conventional 2800mAH cells which will provide more shots and chimping between refills. The best deals for either (including charger) are on either eBay or
http://www.thomasdistributing.com . For insight into battery basics, care, and feeding, visit
http://www.batteryuniversity.com .
If you want to consider the take-no-prisoners EN-EL4a approach, here are some helps.
First, let's mention Phottix Kosmo. It's a single-package 3rd party substitute for
all of the following: BL-3 end cap, EN-EL4a battery, and MH-21/22 charger. They are primarily sold on eBay, but they are showing up in camera stores as well. The package sells for well under $100. Overall the user feedback on this product has been mostly favourable, but not unanimous. Considering the cost savings, and that you are able to get by if you want to return it, it's worth considering. Note also that Kosmo is designed specifically and exclusively for the MB-D10 grip. It will not fit in cameras, it won't charge in an MH-21/22 charger, and it won't fit in 3rd party MB-D10 substitutes. Conversely the Kosmo charger won't charge a Nikon EN-EL4a battery, just Kosmo.
Next, you may wish to consider a 3rd party EN-EL4a knockoff. I would strongly advise against that. You'd be better off with a Kosmo than a knock-off EN-EL4a. The knock-off battery will still need a charger, and compatibility with the MH-21/22 chargers is
not a sure thing (hint: been there, done that). With Kosmo, you are assured of compatibility between battery and charger, because they both come in the same package.
Let's say you want to stick with the Nikon EN-EL4a battery (typical cost is over $100). You'll need an end cap for the MB-D10. Here there is some small help from 3rd party products, without much risk. It's a piece of plastic, what can go wrong? (answer: not much). You can find 3rd party subs for the BL-3 end cap which will save you about half the cost of the BL-3. And they
do fit the MB-D10.
Charger time. 3rd party chargers for EN-EL4a batteries have recently come on the market (see eBay, your one-stop shopping mall!). I have no experience with them, you might want to check.
The MH-21 charger costs over $100, and the MH-22 charger costs considerably more. The MH-22 dual-slot charger provides very little added value over the MH-21: it merely allows you to queue up two batteries for sequential charging (not concurrent charging) at a time. It will charge two batteries in the same time that the MH-21 can charge two batteries. Also, there is little to zero risk in purchasing a used Nikon MH-21 or MH-22 charger and saving a bit of cash. A used charger should work just as well as a new one, and they'll both look the same in a few months, anyway.
When/if you buy an EN-EL4a battery, you should buy it from a high-volume dealer. Li-Ion batteries have a shelf life, much like lead-acid car batteries. You want one fresh off the production line, not one that has been waiting for you for a year.
If you decide to go Nikon EN-EL4a all the way, you can expect to spend another $250 to $300 on top of the cost of the MB-D10. It's just money, right?
There! That's everything I know on the subject... and more.
Congrats on the new camera, and don't forget to post your dog picture.
-- Bob Elkind
Family, mostly sports. Seriously, folks, I'm not that good. If
I can do it,
you can do it!
photo galleries at
http://eteam.zenfolio.com
my relationship with my camera is strictly photonic