Nikon EN-EL9a Battery and Charger with Car Plug and EU Adapter - Replacement for Nikon EN-EL9 Digital Camera Batteries and Chargers (1300mAh, 7.4V, Lithium-Ion) - Walmart.com
EN-EL9a Battery 2-Pack Bundle with Rapid Travel Charger and UltraPro Accessory Kit for Select Nikon Cameras Including D5000, D3000, D60, D40x, and D40 - Newegg.com
EN-EL9 EN-EL9a Battery for Nikon D3000, D5000, D40, D60, D40X
Kastar ENEL9 Lithium-Ion Digital Camera Battery For Nikon D3000, D5000, D40, D60, D40X SLR Cameras and Nikon EN-EL9 EN-EL9a Batteries - Products