Amazon.com : Synergy Digital Camera Battery, Works with Nikon Coolpix P500 Digital Camera, (li-ion, 3.7V, 1100 mAh) Ultra Hi-Capacity, Compatible with Nikon EN-EL5 Battery : Electronics
Battpit: Digital Camera Battery Replacement for Nikon CoolPix P500 (1100 mAh) EN-EL5 3.7 Volt Li-ion Digital Camera Battery - Walmart.com
Amazon.com : Synergy Digital Camera Battery, Works with Nikon Coolpix P500 Digital Camera, (li-ion, 3.7V, 1100 mAh) Ultra Hi-Capacity, Compatible with Nikon EN-EL5 Battery : Electronics
EN-EL5 Battery or Charger for Nikon Coolpix P500 P510 P520 P530 P80 P90 P100 | eBay