The Bolt CBP-N2 Compact Battery Pack for Nikon SB-900, SB-910 & SB-5000 Flash with 8 AA NiMH Batteries & (2) Chargers is a Kit from B&H Photo . It includes Bolt's compact battery pack for Nikon SB-900, SB-910 and SB5000 flashes, and 2x 4 AA NiMH Rechargeable Batteries with 4 Hour Charger (110-240V).
The CBP-N2 Compact Battery Pack from Bolt will boost the number of flashes and the recycle time of your Nikon SB-900, SB-910, and SB-5000 flash units. The CBP-N2 can operate on 4 or 8 AA batteries--alkaline, lithium or nickel-hydride (Ni-MH). Lights on the pack indicate Standby, Recycle, or Low Power mode. A thermal protection switch prevents overheating. The CBP-N2 can provide up to 577 flashes per charge, and recycle times as fast as 1.92 seconds. The pack, which weights just 7 oz without the batteries, can also be attached to the bottom of your camera using the tripod socket.
Compatible Nikon flashes:
SB-5000 Speedlight
SB-910 Speedlight
SB-900 Speedlight
Compatible Nissin flashes:
Di866 for Nikon
Di866 Mark II for Nikon
MG8000 for Nikon