Nikon Battery and MH-70 Charging Kit for Coolpix 2100/2200/3100/3200/4100/4600/5600/7600 Digital Cameras Includes 2 EN-MH1 Coolpix Ni-MH rechargeable batteries and MH-70 battery quick charger Charges in approximately 2.5 hours Will operate Coolpix 2100 for approximately 120 minutes Will charge the Coolpix 3100 in approximately 80 minutes Additional batteries can be purchased seperately