Hello. I have had Nikon's SB-910 for a while now, but just bought a light stand and umbrella, and I also want to buy an external battery pack that can power the speedlight for at least 2-3 hours of use on a single charge, even if it ends up being a lot of full power flashes. I have never bought a battery pack for a flash before, so I am wondering if anyone has any advice on what brands or models are good? If you own a particular brand/model, please also mention that and how you like it.
Thanks in advance for the advice,
Andrew
Thanks in advance for the advice,
Andrew