Nikon D300 Complete Manual page 755

V1.02
cable from the AC adapter to the camera is not removable or
extendable. Note that when the camera is plugged into an
EH-5a, the monitor timeouts (10 minute default) still apply!
MH-18a Quick Charger. Designed specifically for the EN-EL3
type battery packs, the MH-18a can charge a fully depleted
battery in about two hours. This is the charger that is supplied
with the camera, and is designed for the EN-EL3, EN-EL3a,
and EN-EL3e batteries. The AC power cable is removable, and
the charger can be used with voltage sources of 100-240V,
with AC cycles of 50 or 60 Hz. Earlier MH-18 chargers can be
used with the EN-EL3e, as well.
MH-19 Multi Charger. Also designed for the EN-EL3 type
batteries, this charger can charge two EN-EL3e batteries in
sequence. It can also be run from a vehicle and can refresh
batteries.
DK-21 Eyepiece Cup. This small device slides into the
viewfinder rails and has a rubber rim to shield the viewfinder
from receiving light. If you take pictures without looking
through the viewfinder and your camera isn't in Manual
exposure mode, you must block light coming in through the
viewfinder using your hands or the supplied DK-5 eyepiece
shutter, which goes into the viewfinder rails in place of the
DK-21. One DK-21 is supplied with the D300.
DG-2 Magnifier (requires, and usually comes with, DK-7
Eyepiece Adapter, which slides into the viewfinder rails). An
optional viewfinder extension that magnifies the scene in the
viewfinder and provides additional precision in determining
focus in macro and telephoto work.
DR-6 Right Angle Viewer. An optional viewfinder extension
that slides into the viewfinder rails in place of the DK-21 and
allows you to see the scene in the viewfinder at a right-angle.
Useful for low-angle, macro, and copy stand work.
DK-21M Magnifying Eyepiece Cup. This small replacement
eyepiece slides into the viewfinder rails and has a rubber rim
Thom Hogan's Complete Guide to the Nikon D300 Page 755