Amazon.com: Synergy Digital Camera Battery, Works with Nikon D2X Digital Camera, (li-ion, 11.1V, 2200 mAh) Ultra Hi-Capacity, Compatible with Nikon EN-EL4 Battery : Electronics
Amazon.com : Kastar 2-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) :
3300mAh EN EL4 EN EL4A Battery for Nikon D2H D2Hs D2X D2Xs D3 D3S F6 MH 21 ENEL4 ENEL4A EN EL4A EN EL4 Battery|Digital Batteries| - AliExpress
Amazon.com: Synergy Digital Camera Battery, Works with Nikon D2X Digital Camera, (li-ion, 11.1V, 2200 mAh) Ultra Hi-Capacity, Compatible with Nikon EN-EL4 Battery : Electronics