jto555 Posted February 7, 2015 Share #1 Posted February 7, 2015 Advertisement (gone after registration) Hi, has anybody tried the NiZn 1.6v batteries (A Review Of NiZn Batteries - MetaEfficient) in the SF 58 flash gun. On paper the battries look great but there are some reviews on Amazon that are not so good. The battries seem to produce a faster recycle time due to the 1.6v but will it fry the SF 58? Before anybody asks, I do need the faster recycle time. At the moment I am using Godox 860c Ving flash guns because of the big lump of battery and 2 sec recharge time on full power. However, if the NiZn work in the SF 58 I can get HSS flash with a short recharge time. John Quote Link to post Share on other sites More sharing options...
Advertisement Posted February 7, 2015 Posted February 7, 2015 Hi jto555, Take a look here NiZn batteries 1.6v AA in a SF-58?. I'm sure you'll find what you were looking for!
jto555 Posted February 9, 2015 Author Share #2 Posted February 9, 2015 Hello? Anybody? Its lonely here... Quote Link to post Share on other sites More sharing options...
Doc Henry Posted February 10, 2015 Share #3 Posted February 10, 2015 (edited) John, as recommended by Leica AG and as SF24D , batteries should be "1.5 volt alkaline manganese" or "lithium" I opted for lithium batteries non-rechargeable. For rechargeable batteries Leica recommends NC 1.2 V type IEC KR6 (AA) or IEC HR6 (AA) Nickel Metal Hydride But you can always try knowing that the rechargeable batteries may stop suddenly when discharged. For this reason I buy non-rechargeable batteries. Safer ! Best Henry Edited February 10, 2015 by Doc Henry Quote Link to post Share on other sites More sharing options...
Doc Henry Posted February 12, 2015 Share #4 Posted February 12, 2015 (edited) Hello? Anybody? Its lonely here... Hello where are you ? Henry Edited February 12, 2015 by Doc Henry Quote Link to post Share on other sites More sharing options...
giordano Posted February 12, 2015 Share #5 Posted February 12, 2015 The NiZn cells have similar open-circuit voltage to alkaline cells, but lower internal resistance (similar to NiCd and NiMH, in fact). This means that their voltage won't drop the same way as that of alkaline cells does when supplying the heavy current to charge the SF 58's capacitor - which in turn means that they'll put out more current than either alkaline or NiCd/NiMH, hence the extra-fast recycling. Depending how the SF58's components are specced and heat-sinked, this may or may not be a problem. The low internal resistance of NiCd cells certainly was a concern for Metz with the old 45 series; these came with a NiCd battery pack or a holder for 6 AA cells. The NiCd pack and the AA holder supplied power via different contacts inside the battery compartment and there were stern warnings in the manual only to use alkalines in the AA holder, not rechargeables. One of my second-hand 45CL4 units has a heat-warped casing in the battery-oscillator-capacitor area, perhaps for this reason. 1 Quote Link to post Share on other sites More sharing options...
jto555 Posted February 13, 2015 Author Share #6 Posted February 13, 2015 Hello where are you ? Henry I was throwing teddy out of the pram... I have bought a set of the battries to give them a try. Just waiting for them to be delivered, and the insurance is topped up. Shhhh! Don't mention this thread to my broker. 1 Quote Link to post Share on other sites More sharing options...
jto555 Posted February 17, 2015 Author Share #7 Posted February 17, 2015 Advertisement (gone after registration) Right. I bought two sets of the 1.6v battries and put them into the flashgun. It didn't go bang... Recharge time after a full power dump is about 3 sec. A big improvement over standard battries. I would be concerned that a prolonged use on a shoot would cause the flash to overheat and that would cause it to fry. The Godox v860 flashgun that I use, has a 11.1V 2000mAh Lithium-Ion battery, and the flash will shut under hard use. There has to be a downside to very fast recycling time. I don't know if the SF 58 will shut down so quickly if it gets too hot, as it was never designed for a high voltage. I have blown a few Canon and Metz flash tube over the years from hard use. 1 Quote Link to post Share on other sites More sharing options...
jto555 Posted March 19, 2015 Author Share #8 Posted March 19, 2015 Just to follow up. I have been using these batteries now for a couple of weeks and I have used the flash gun on quite a few shoots. Well the flash did not go 'Bang' as I was afraid it might. The recharge time is MUCH quicker than before and the batteries seem to hold the charge very well. So (so far), I am very pleased. It seems to be a win win. 2 Quote Link to post Share on other sites More sharing options...
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