Nikon D800 - Manual (Page 46)

En_03
22
s
A
Removing the Battery
Turn the camera off and open the battery-
chamber cover. Press the battery latch in the
direction shown by the arrow to release the
battery and then remove the battery by hand.
Note that the battery may be hot after use;
observe due caution when removing the battery.
To prevent short-circuits, replace the terminal
cover when the battery is not in use.
D
EN-EL15 Rechargeable Li-ion Batteries
The supplied EN-EL15 shares information with compatible devices,
enabling the camera to show battery charge state in six levels (
0 37).
The Battery info option in the setup menu details battery charge,
battery life, and the number of pictures taken since the battery was last
charged (
0 332).