Product Dmk Power Enel9, En-El9 Lithium Ion Rechargeable Battery For Nikon D3000, D5000, D40, D40X, D60 Digital Camera Battery Specifications - Energy Storage Capacity: 1000 Mah /Voltage: 7.4 Volts, 7.4Wh Chemistry: Li-Ion Charging Status Led Turns Into Green From Red When Battery Is Charged Fully Eu Plug Output: Dc 4.2V Or 8.4V, 600Mah Car Charger Cable Is Used To Charge In Car While In Travel.