Amazon.com: 2 Pack - Replacement for Nikon Coolpix P520 Battery + Charger with Car & EU Adapters - Compatible with Nikon EN-EL5 Digital Camera Battery and Charger (1400mAh 3.7V Lithium-Ion) : Electronics
1400mAh ENEL5 EN-EL5 Battery for Nikon Coolpix P530 P520 P510 P100 P500 P5000 P5100 P6000 3700 4200, USB Charger for EN EL5 - AliExpress
Big Mike's Electronics ENEL5 BM Premium 2-Pack of EN-EL5 Batteries for Nikon Coolpix P80, P90, P100, P500, P510, P520, P530 Digital Camera
Camera Battery for Nikon Coolpix P520 - BatteryEmpire
New 2pcs EN-EL5 EN EL5 1600mAh Rechargeable Camera Battery for Nikon Coolpix P4 P80 P90 P100 P500 P510 P520 P530 P5000 P6000 - AliExpress