7.4v 1030mah En-el14 El14 Battery + Dual Usb Charger For Nikon D3100 D3200 D3300 D3400 D3500 D5100 D5200 D5300 D5500 D5600 - Digital Batteries - AliExpress
Nikon ;EN-EL14A battery rechargeable Li ion battery for Nikon; D3100;D3200; D3300; D3400; D3500; D5200; D5300; D5500;D5600 ;1230 mAh;8,9 WH; Lithium ion; 7,2 V - AliExpress
UltraPro Nikon D3100 Digital Camera Battery Charger (110/220v with Car & EU adapters) - UltraPro Replacement Charger for Nikon MH-24 Charger - Walmart.com
Nikon D3100 With Battery Grip by TheXtremesoundz on DeviantArt