Amazon.com : Wasabi Power Battery (2-Pack) and Charger for Nikon EN-EL3e and Nikon D50, D70, D70s, D80, D90, D100, D200, D300, D300S, D700 : Digital Camera Batteries : Electronics
LCD_BATTERYGRIP_D300/D700
Kastar 3-Pack EN-EL4a Battery 11.1V 3200mAh Replacement for Nikon Camera D2Xs, Nikon Camera D3, D3S, D3X Camera, Nikon Camera F6, Nikon Grip MB-D10 D300 D300S D700 MB-40 (W/ BL-3 Chamber) - Walmart.com
Amazon.com : FirstPower EN-EL3e Battery 2-Pack 2200mAh and Dual USB Charger Compatible with Nikon D50, D70, D70s, D80, D90, D100, D200, D300, D300S, D700 Digital SLR Cameras : Electronics