Amazon.com : 2x Pack - Nikon EN-EL9 Digital Camera Battery and Charger Replacement with Car & EU Adapters (1300mAh, 7.4V, Lithium-Ion) - Compatible with Nikon D3000, D5000, D40, D60, D40X, EN-EL9, EN-EL9a,
Nikon EN-EL9A Battery Rechargeable lithium ion battery for select Nikon digital SLRs at Crutchfield
1000mAh 7.4V EN-EL9 ENEL9 ENEL9 EL9 Li ion Battery for Nikon D40 D40X D60 D3000 D5000 Digital Camera bartteries and LCD charger