Capacity: 2100mAh Battery Type: Ni-MH Voltage: 7.4V Model numbers fit to: NIKON D1, D1H, D1X Compatible battery part numbers: EN-4 RoHS approved for toxic free. CE and ISO9001 Certified for Quality Assurance. Search Tip: Press Ctrl and F keys to prompt a search dialogue box, then type in your device's model number and click 'Find Next'.