EN-EL20 Rechargeable Li-ion Battery | Camera Battery
If you aren't using the camera the whole day, don't worry it will last. When you aren't using the camera, take the battery out. It will conserve the battery life.
May 21, 2013
Won't last a day of shooting
Won't last a day of shooting even without using much of the flash. One should really need to buy extra battery for Nikon J1 or V1.
May 9, 2012