Amazon.com : Newmowa EN-EL9/EN-EL9a Replacement Battery (2-Pack) and Charger Kit for Nikon D40, D40X, D60, D3000, D5000 : Electronics
Genuine Original Nikon EN-EL9A Battery for Nikon D60 D40 D40X D5000 D3000 MH-23 | eBay
Amazon.com : DSTE® 2X EN-EL9 Rechargeable Li-ion Battery for Nikon D40 D40X D60 D3000 D5000 Digital Camera as ENEL9 EN-EL9A : Digital Camera Batteries : 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
Amazon.com : Kastar 2 Packs EN-EL9 Compatible Battery Replacement for Nikon EN-EL9, EN-EL9a, EN-EL9e Batteries and Nikon D40, D40x, D60, D5000, D3000 Cameras, Nikon MH-23 Charger : Digital Camera Batteries : Electronics