Amazon.com: UltraPro Nikon D3100 Digital Camera Battery Charger (110/220v with Car & EU adapters) - UltraPro Replacement Charger for Nikon MH-24 Charger : Electronics
Type-c Usb To En-el14 Dummy Battery Power Adapter For Nikon D3100 | Fruugo QA
Amazon.com: HQRP AC Power Adapter Kit Compatible with Nikon D3100 D3200 D3300 D3400 D3500 D5100 D5200 D5300 D5500 Coolpix P7000 P7100 P7700 Digital Camera, EP-5A, EN-EL14 : Electronics