2 Pack Nikon EN-EL14/EN-EL14A Li-Ion Battery Replacement by Commander for Nikon D3100, D3200, D3300, D5100, D5200 and D5300 Digital Cameras - Walmart.com
BATTERY GRIP D3100
Amazon.com : ecoEfficiency 2-Pack of EN-EL14, EN-EL14A Batteries for Nikon D3500, D3100, D3200, D3300, D3400, D5100, D5200, D5300, D5500, D5600, DF, Coolpix P7000, P7100, P7700, P7800 DSLR Cameras : Digital Camera Batteries :
Replacement En-EL14 En EL14 Digital Camera Battery for Nikon D3100/D3200/P7000/D5100 - China En-EL14 En EL14 Replacement Battery and En-EL14 Battery price | Made-in-China.com