Yet, I just installed the used MB-D10 grip from BH and it has the same problem. Works with AA but soon as I put one of the two EN batteries in it the camera is DEAD and shows drained batteries. Both batteries work fine directly inside the camera body - WTH ???
Tom Trujillo The CUBAN NIKONIAN! D700, D70s, F5, N70, 8008, F-PhotoT
"Nikonians membership - My most important photographic investment, after the camera"