EN-EL3e, Pickle Power 2 x 1900mAh EN-EL3a, EN-EL3 Batteries and LED Dual USB Charger Compatible with Nikon D50, D70, D70s, D80, D90, D100, D200, D300, ...
USB Dual EN-EL3e Battery Charger For Nikon D50 D70S D80 D90 D100 D200 D300S D700
DSTE EN-EL3E Camera Battery (2-pack) and Charger Compatible with Nikon D30, D50, D70, D70S, D90, D100, D200, D300, D300S, D700
Battery-grip Mod for the Nikon D50 : 4 Steps - Instructables
New Nikon EN-EL3e Battery For Camera Nikon D50 D70 D70s D80 D90 D100 D200 D300S