Nikon SB-5000 Reference Manual page 183

Connecting to an external power source
v
Using High-performance Battery Pack SD-9 or SD-8A
Conducting continuous flash photography at 8 fps using the SD-9 with
8 batteries or SD-8A with 6 batteries can cause the front part of the flash
head to heat up. In flash photography, attaching the SD-9 or SD-8A to
the camera may cause some lineal noise to appear in the image. If this is
the case, set a lower ISO sensitivity or detach the SD-9 or SD-8A from the
camera and use separately.
To use an external power source,
remove the external power source
terminal cover and connect the power
cord to the terminal.
• Do not use Power Cord SC-16 when
connecting the SB-5000 to the Nikon
DC Unit SD-7; use the SC-16A instead.
H
H-18