Insten Battery Charger Compatible with Nikon EN-EL14 ENEL14 D3100 DSLR NOTE: For a success and safe charge to your battery, please make sure to line up the correct polarity (positive / negative) before inserting the battery onto the charger. A/C power supply input voltage: AC100V~240V. Output voltage: DC 8.4v 600mA. Charger Compatible with Nikon EN-EL14 battery. Accessory ONLY, camera not included.