Review on 📸 Enhanced Pixel Pro SD-9 Compatible External Flash Battery Pack for Nikon SB-900 and SB900 Flashgun by Robb Fillmore

When I ordered this item I wasn't sure if it would work on my SB910 flash or not. So I order this and another brand (I need two of these). Another brand doesn't work at all with my SB910 flash (in camera off mode), it only works in camera flash mode. This works as advertised on my SB910 flash. I put a very old battery in my SB910 and measured that it takes about 1112 seconds to fully charge the flash. With this item attached, it takes less than 2 seconds to charge the flash to full power. I returned a different brand and ordered a second product of this product. The second also works on my SB910 flash. By the way, it only needs one connection to work and not two connections as shown in the picture. Another brand uses two connectors but doesn't work in camera-off mode. The purpose of my purchase of this product is the off-camera flash mode. Be careful with off-camera flash mode, not all products work in off-camera flash mode. But this one does.