Amazon.com: Synergy Digital Camera Battery, Compatible with Nikon Coolpix P600 Digital Camera, (Li-ion, 3.8V, 1400mAh) Ultra High Capacity, Replacement for Nikon EN-EL23 Battery : Electronics
Portable Emergency AA Battery Charger Extender suitable for the Nikon Coolpix P600 - with Gomadic Brand TipExchange Technology
Nikon EN EL23 - Battery - Li-Ion - 1850 mAh - for Coolpix B600, B700, P900 - Walmart.com
Long Endurance EN
New Original Nikon EN-EL23 Battery for Nikon COOLPIX P600 P900 S810 | eBay