- Easy to use and lots of extra power
- Way to expensive for what is only really a plastic box with a battery tray and cord.
|Value for money|
Published on: 24 November 2011
External Power Source
The High-Performance Battery Pack SD-9 is an external power source for the Nikon Speedlight SB-900. The SD-9 can hold up to two sets of four AA-type batteries, ensuring a stable power supply for the SB-900, greatly increasing the number of flashes, and reducing recycling time. Recycle time can be reduced to around 1 second.