So I just built this today so I can charge my 123's on my hobby charger. Simple enough to make for anyone with some soldering skills and it works remarkably well. I think I'll design my next one with a longer pipe and multiple notches so I can just move one of the brass strips to a different notch for different batteries. I also have a question. My charger can charge from 100ma up to a few amps. I tested it today at 250ma and everything seemed to work good. What would be the best current to charge with?
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