Nikon SB900

Introduced alongside the SB-900 Flash was the SD-9 high performance battery pack. The SD9 Battery pack was designed specifically for use with the speedlight SD900 and works to drastically shorten flash recycling time while also vastly improving flash capacity. It contains a few improvements when compared to the older Nikon SD8A pack, most notably now taking both 4AA or 8AA size batteries in two seperate loads (whereas Nikon SD-8A only took 6 batteries) of the following types: Learn More SD-9 Learn More SD-8A 1.5V LR6 (alkaline) 1.2V KR-AA (NiCd) 1.5V FR6 (lithium) 1.2v (Ni-MH) The Nikon SD-9 power bracket follows up on the popular SD-8A battery pack, and has some considerable improvements, below are some of the differences between the SD9 and SD8A Compare Nikon SD-9 vs SD-8A battery packs: Major Difference: The Nikon SD-9 battery pack takes 8AA or 4AA batteries in two seperate circuits and multiple indication lights on each bank point out which is in use / charged or not. This is the major change from the Nikon SD-8A which only takes 6AA batteries in single circuit. Other Differences: Most of the other changes revolve around better ease of use and physical design tweaks, such as the [...]

With everything you need to get started pretty much included in the box of the SB900, the most popular aftermarket SB-900 accessory items are pretty much limited to choosing batteries and high performance battery packs. There aren’t a plethora of options, but there are a couple of popular options like the Nikon SD-9 and SD-8A for battery packs and also different types of batteries do increase performance quite drastically. Below is a description of the different types of batteries one can use with the Speedlight SB900 flash, and also the Nikon high performance battery packs and a chart of what kind of performance changes one can expect when changing between the options: Learn More SD-9 Learn More SD-8A Compare Min. Recycle time & Min # of flashes by battery type Battery Type: Min. Recycle Time Min. # Flashes Interval from full output & ready light on Alkaline-manganese (1.5V) 4.0 Secs 110 4.0-30 secs Lithium (1.5V) 4.5 Secs 230 4.5-120 secs Oxyride (1.5V) 3.0 Secs 125 3.0-30 secs Ni-MH (2600 mAH) (1.2V) 2.3 Secs 190 2.3-30 secs Notes: * At Full output ** Chart is approximentation with fresh batteries, varies with conditions *** 4x AA-Size penlight batteries (1.5Volts or lower) **** [...]

There aren’t many accessories nor aftermarket upgrades for your SB-900 speedlight, nor will you really need any as everything is provided in the box. Check out this entry to get the low down on what SB900 accessory options are already preloaded inside, and where you can find replacement parts if needs be.