Amazon.com : Synergy Digital Camera Battery, Works with Nikon Coolpix 8700 Digital Camera, (li-ion, 7.4V, 850 mAh) Ultra Hi-Capacity, Compatible with Nikon EN-EL1 Battery : Electronics
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Amazon.com : Kastar 2-Pack Battery Replacement for Nikon Coolpix 4300 Coolpix 4500 Coolpix 5400 Coolpix 5700 Coolpix 8700 Camera and Nikon ENEL-1 EN-EL1 Battery : Digital Camera Batteries : Electronics