Anyone use the SD-9 external battery pack for SB900/SB910?

johnwartjr

Senior Member
I've been dabbling in wedding photography lately for some customers, and have problems with overheating SB-900s.

I'm looking at every potential solution. Ordered a Yongnuo 565 after reading some glowing reviews and talking with a couple friends who use them. My 565 blew up after about 10 flashes, I've returned it for an exchange and hopefully the replacement fares better. It literally made a loud bang noise on one flash, and no longer worked. It powers on, the LCD works, the pilot light lights, but it would no longer flash, just made a clicking noise from the head area. I found some articles that discussed how to fix it on my own, but since I'd only had it in my hands for a couple hours, and I paid an extra $10 to get it from a US distributor, I opted to return it for an exchange with the agreement that if a 2nd unit fails in the same way, I'll get a refund.

Some folks suggested using external battery packs. Nikon has the SD-9, and there are some aftermarket 'equivalents' - but before I spend the money, there is a level of confusion.

I've read the batteries must be in the flash for the SD-9 to function. The entire reason the external battery was recommended to me was because the heat of the batteries contributed to the overheating.

So, if you have to leave the batteries in the flash to use the SD-9, what's the point? They will still get hot, right?

FWIW, I'm using Eneloops.

I use all fast glass, 2.8 or faster. I really like the 85 1.4G with natural light, or just minor flash for fill - but I'm not ready to buy one yet. I'm keeping the the rental companies happy though :)

If the answer is buying SB-910s, I will sell my 900s and get a couple 910s.
If the answer is getting quantums, I'll go that way, too.

I'm just trying to understand all my options to make the best decision.

Any feedback is appreciated!
 

miknoypinoy

Senior Member
I believe the batteries in the flash are needed to run the electronics and display of the flash (lower voltages). any high voltage output to actually power the strobe will be done with the power pack. that's how it was set up when I had a quantum with my sb900 a while back. on my sb800 the power pack actually ran both low and high voltages as the 800 didn't have the front power input as the 900 has. I think this is what your referring to in your question lol. hope this helps.

oh, and I don't own a sd 9. the thought of a $200 battery holder doesn't do it for me lol. that's why I went the quantum turbo sc route. cost even more but I felt I got my money's worth with that one. lol.

I'm not afraid . . . YOU WILL BE. . . YOU WILL BE. . .
 
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