Amazon.com: Synergy Digital Camera Battery, Works with Nikon D2X Digital Camera, (li-ion, 11.1V, 2200 mAh) Ultra Hi-Capacity, Compatible with Nikon EN-EL4 Battery : Electronics
Amazon.com : EN-EL15 EN EL15a Battery Charger Pack, LP Charger Compatible with Nikon D7500, D7200, D7100, D7000, D850, D750, D500, D810a, D810, D800e, D800, D610, D600 & More : Electronics
Amazon.com: FirstPower EN-EL14/EN-EL14a Battery and USB Dual Charger Compatible with Nikon D3100 D3200 D3300 D3400 D3500 D5100 D5200 D5300 D5500 D5600 DF Coolpix P7000 P7100 P7700 P7800 Camera : Electronics