Nikon D300 User Manual page 341

If you have an MB-D10 and plan on using cheap AA
batteries, then you'll need to tell the camera what type of AA
batteries you're using for this session. It certainly is not a
good idea to mix AA battery types.
These are the battery types the camera will accept:
▪ LR6 (AA alkaline)
▪ HR6 (AA Ni-MH)
▪ FR6 (AA lithium)
▪ ZR6(AA Ni-Mn)
Here are the screens and steps for configuring the
battery type (Figure
Figure 4-46. MB-D10 battery type
1. Select d Shooting/display
and scroll to the right (see
2. Highlight
(see Figure
3. Choose one of the four choices on the list. In
Figure 4-46, image 3,
selected.
4. Press the
4-46):
MB-D10 battery type
4-46, image 2).
OK button to lock in the setting.
from the Custom Setting Menu
Figure 4-46, image 1).
and scroll to the right
LR6 (AA alkaline)
341
MB-D10
has been