Battery Grip for Nikon D40 D40X D60 ND40N ENEL9 Battery Grip Combo deal With Two EN-EL9 Batteries
Rechargeable Battery Grip for Nikon D40, Nikon D60, Nikon D40X
Up to 4000 pictures per charge
Up to 5X more battery power
Retains tripod mounting thread
**Do not support a "real" vertical release button. you can't press down half way to focus with these.
But the grips might give you a better balance, especially with heavy lenses attached**
This Nikon BGNKD5000 Battery Grip is a powerful and versatile accessory for the Nikon D40,Nikon D40x,Nikon D60 single-lens reflex digital cameras. It takes one or two EN-EL9 (EN-EL9a) battereis, especially suitable for shooting in a large quantity or low temperatures environment. It can shoot up to 4000 pictures per charge (Two EN-EL9).