Amazon.com : High Capacity EN-EL9 Replacement Lithium-Ion Battery for Nikon Digital SLR D40 D40X D60 Digital Camera : Electronics
Amazon.com : Wasabi Power Battery (2-Pack) and Charger for Nikon EN-EL9 and Nikon D40, D40x, D60, D3000, D5000 : Digital Camera Batteries : Electronics
Probty EN-EL9 EN-EL9a EN EL9 Li-ion Battery Pack for Nikon D40 D40x D60 D3000 D5000 Digital SLR Cameras - AliExpress