Originally Posted by kyleservicetech
I made one of those with some copper bar stock on my lathe some 10 years ago. Works well, and still use it. But, IMHO, that 80 watt Weller soldering iron does work better.
OK, the pair of 6S2P A123 battery packs are now complete. As for soldering, I'd purchased some all purpose flux from this company. It worked far and above better than the Radio Shack flux. Don't know what this stuff is, so the cells were cleaned three times in pure alcohol after soldering, just in case!