Amazon.com: Nikon COOLPIX A900 Digital Camera Battery Charger (110/220v with Car & EU adapters) - Replacement Charger for Nikon EN-EL12 Battery : Electronics
Nikon CoolPix A900 Battery
Gomadic High Capacity Rechargeable External Battery Pack suitable for the Nikon Coolpix A900
Amazon.com : STK EN-EL12 Battery for Nikon Coolpix A900 AW130 AW120 S9900 S9500 W300 S9700 S9600 S6000 S8200 AW110 S9100 : Digital Camera Batteries : Electronics