Amazon.com : Battery Pack for Nikon Coolpix S2700, S2750, S2800, S2900 Digital Camera : Electronics
Amazon.com: Synergy Digital Camera Battery, Works with Nikon Coolpix S2900 Digital Camera, (Li-Ion, 3.7V, 1000 mAh) Ultra Hi-Capacity, Compatible with Nikon EN-EL19 Battery : Electronics