Amazon.com : Synergy Digital Camera Battery, Compatible with Nikon D3 Digital Camera, (li-ion, 11.1V, 1800 mAh) Ultra High Capacity, Replacement for Nikon EN-EL4 Battery : Electronics
Nikon D3S In-depth review: Digital Photography Review
Amazon.com : Synergy Digital Camera Battery, Compatible with Nikon D3 Digital Camera, (li-ion, 11.1V, 1800 mAh) Ultra High Capacity, Replacement for Nikon EN-EL4 Battery : Electronics