Nikon D810 - Manual (Page 352)

328
Choose whether the battery in the camera or the batteries in the
battery pack are used first when an optional MB-D12 battery
pack is attached. Note that if the MB-D12 is powered by an
optional AC adapter and power connector, the AC adapter will be
used regardless of the option selected.
A s icon is displayed in the camera
control panel when the batteries in the
MB-D12 are in use.
d13: Battery Order
G
button ➜ A Custom Settings menu
A
The MB-D12 Battery Pack
The MB-D12 takes one EN-EL15 or EN-EL18a/EN-EL18 rechargeable
Li-ion battery or eight AA alkaline, Ni-MH, or lithium batteries (an
EN-EL15 is supplied with the camera; EN-EL18a/EN-EL18 and AA
batteries are available separately).
The information display shows the type of
battery inserted in the MB-D12 as follows:
MB-D12 battery type display Battery type
v EN-EL15 rechargeable Li-ion battery
x
EN-EL18a/EN-EL18 rechargeable Li-ion
battery
u AA batteries