Camera Battery Charger for Nikon En-el14 D3100-D3300 D5100 - D5500 P7000 - P7800 | eBay
Amazon.com: BoxWave Charger Compatible with Nikon D3100 (Charger by BoxWave) - Digital Camera Battery Charger, Car Charger for Camera Batteries for Nikon D3100, Nikon D3100 | Coolpix P7000 : Electronics