When I got my D700 in Spring I asked about and the consensus was the 3rd party chargers were junk, and the recomended batteries where no longer available. So based on that I went used and got 3 used Nikon batteries and charger. They still arent' cheap, the charger especially, but at least you know what you're getting.
Might be worth seeing if there's a spares of repair D2 or simlar with a charger and battery on ebay. They do come up cheap enough to go that route at times.