Lacking the funds to purchase one of quantum's $500 battery packs for my nikon speedlight flashes, and faced with an upcoming 3-day assignment.... In this video i show how to make a small modification to our flashes to use it with a external battery customized to your needs., be careful, not all the. Diy sla battery pack for speedlites. 69 comments. i wanted the option to power two flashes from one battery so i got two two-pin cb style sockets for the case..
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