This ingenious Nikon Battery Grip holds six standard AA batteries and converts the power into juice your Nikon D200 can use through the adapter. Now why can’t they do that for every DSLR camera type? It would save lugging around extra batteries, all you would have to do is pop into the nearest store and buy some refills. £99.59.
Pro Battery Grip for the Nikon D200, has the same function as MB-D200 # It can hold 6 AA batteries or two EN-EL3E Li-ion batteries, doubling the shooting time of your camera # Vertical shutter release button on the Battery Grip makes shooting with the camera in a vertical position much easier, adding stability to the camera # In this professional edition, there are several functional buttons on the battery grip # It will be much convenient while using # It provides additional shutter release, main dial, sub-main dial, AE lock/FE lock for easier vertical shooting
Alkalines are bad Nigel, they're disposable. Rechargeables are good remember?
I have the Nikon D80 version of this, it makes the camera much easier to hold and with 2 batteries it lasts forever. You can even tell the camera that you've fed it Alkalines instead of rechargeables so the battery meter is still accurate.
Nikon’s own MB-D200 can use AA batteries too. Anyone that reads the spec sheet can see that. Why did you think this was something new or special? I agree with Dan though, Alkalines are bad. However, the point of that feature is to give you a backup if your Li-Ion’s run out of juice.
Canon battery grips also usually have a AA option, though I've heard it's not particularly useful, since the doubled Li-ion batteries pretty much last forever-n-ever, compared to how quickly AA's die.