I purchased the NiZn batteries after your initial review and was super stoked when they came. I'm an avid digital photographer, and replacing flash batteries at a wedding actually gets expensive enough to make buying a bunch of rechargables worthwhile.
That said, I had a brand new SB600 (just like yours) burn out with no warning while shooting with the NiZn batteries. I had to ship the whole thing in and get it replaced. I browsed the Fred Miranda forums some time later and found a bunch of people with the same issue - the SB600 relies on Alkaline batteries simply not being able to drive enough power quick enough when shotgunning that flash to avoid burning out. There isn't any thermal safeguard.
So be warned, even though you're testing on an SB600, if you actually do go out and abuse the batteries like you would at a big event firing the flash a lot, you WILL nuke your stuff. I'm too scared to use my NiZn batteries now.
@Nerdtalker: That's also true of an external battery pack, like a Quantum Turbo. While the NiZn cells may seem like a no-brainer, drop in replacement, you have to know what you're doing.
For me the last recycle times with the PowerGenix cells was THE reason to buy them.
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I purchased the NiZn batteries after your initial review and was super stoked when they came. I'm an avid digital photographer, and replacing flash batteries at a wedding actually gets expensive enough to make buying a bunch of rechargables worthwhile.
That said, I had a brand new SB600 (just like yours) burn out with no warning while shooting with the NiZn batteries. I had to ship the whole thing in and get it replaced. I browsed the Fred Miranda forums some time later and found a bunch of people with the same issue - the SB600 relies on Alkaline batteries simply not being able to drive enough power quick enough when shotgunning that flash to avoid burning out. There isn't any thermal safeguard.
So be warned, even though you're testing on an SB600, if you actually do go out and abuse the batteries like you would at a big event firing the flash a lot, you WILL nuke your stuff. I'm too scared to use my NiZn batteries now.
@Nerdtalker: That's also true of an external battery pack, like a Quantum Turbo. While the NiZn cells may seem like a no-brainer, drop in replacement, you have to know what you're doing.
For me the last recycle times with the PowerGenix cells was THE reason to buy them.