Best Buy: Nikon Rechargeable Lithium-Ion Battery for Nikon D3100 Digital Cameras 27017
Battery Pack For Nikon Df And Nikon D3100, D3200, D3300, D3400, D3500, D5100, D5200, D5300, D5500, D5600 Digital Slr Camera - Digital Batteries - AliExpress
Amazon.com: UltraPro Nikon D3100 Digital Camera Battery Charger (110/220v with Car & EU adapters) - UltraPro Replacement Charger for Nikon MH-24 Charger : Electronics
Hi-Capacity Lithium Ion Battery Pack With Charger for Nikon D3100 D3200 D3300 | eBay
EACHSHOT D3100 Battery Grip for Nikon D3100 D3200 D3300 AS BG-2F SG-2F | Eachshot.com
Amazon.com: EN-EL14 Battery Pack, LP 2-Pack EN EL14a Replacement Battery, Compatible with D3500, D5600, D3300, D5100, D5500, D3100, D3200, D5200, D5300, D3400, DF, Coolpix P7000, P7100, P7700, P7800 Camera & More :
Amazon.com: BM Premium Battery Grip Kit for D3100 D3200 D3300 D5300 Digital SLR Camera - Includes Qty 4 EN-EL14 Batteries + BG-N12 Battery Grip Replacement : Electronics