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
Amazon.com : DSTE Replacement for Pro Multi Power Battery Grip Holder Compatible Nikon D5100 with Remote : Digital Camera Battery Grips : Electronics
Amazon.com : Nikon MB-D15 Grip Multi Battery Power Pack for D7200 and D7100 Digital SLR Cameras : 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
Amazon.com : Nikon EN-EL14 Rechargeable Li-Ion Battery for Select Nikon DSLR Cameras (Retail Package) : Digital Camera Batteries : Electronics
Amazon.com : STK EN-EL9 EN-EL9a Battery Replacement for Nikon D3000, D5000, D40, D60, D40X : Digital Camera Batteries : Electronics