flash power pack

The external JJC Compact Battery Pack FB-2 improves flash recycle times significantly and increases the number of firings before batteries need to be replaced.When this battery pack is connected to the flash, the recycling time is reduced to approximately 1/3 of the original value, and the number of flashes is increased by approximately three times. The pack takes optional rapid-change magazines that can be loaded with 8 AA-size batteries prior to a shoot to ensure fast and smooth transitions from one battery set to the next - important in critical shooting situations or to keep up momentum in the studio. This battery pack replace NIKON SD-9. This battery pack is designed for NIKON SB900 flash.Compatible with following flash units: --Nikon SB-900Install Battery 1. Slide the battery cover in the direction of the arrow from the FB-2 battery Pack. 2. Insert eight new AA-size alkaline batteries that are the same brand as those in the flash unit. AA-size nickel-hydride batteries and AA-size lithium batteries can also be used. 3. Slide the battery cover in the negative direction of the arrow from the FB-2 battery pack. Connecting to the flash unit 1. Remove the contact cover on the flash, then firmly insert the connector plug into the socket. 2. Turn on the flash's power switch. Make sure the operation indicator lamp turns on. 3. The camera is ready to take picture. Use the camera after confirming that the flash pilot lamp is on CAUTION Do not fire rapid bursts of more than 20 continuous flashes. After 20 continuous flashes, allow a rest time of at least 10min. Even when the FB-2 is connected, the flash unit internal batteries are used to control the flash. Do not remove batteries from the flash. When using an EOS DIGITAL camera with the FB-2, images may contain noise due to electromagnetic interference. Therefore, be sure to keep the battery pack at least 5cm away from the camera body. When not using the flash, turn off the flash power switch to prevent unnecessary battery drain.l Turn the flash power switch to the OFF position before attaching or detaching the connecting cord. Attaching to the camera The camera bottom attachment screw and rubber mat include with the FB-2 can be used to attach it to the tripod socket on the camera body. See CAUTION above for information on attaching the FB-2 to Digital camera. Dimension: 177 X 74 X 26mm (body only)