Just got the welder. Nice!
Thanks @aulakiria for letting me buy one (and for reverse polarity protection!). Thanks @rojitor for all the testimonials and videos. Thanks @Maxid for keeping everyone honest.
The soldering iron, I don't think anyone noted. I think it's a clone of the Hakko FX-951 system's handpiece. That's a $300 system. When you get past the Hakko 888 level, these temperature controlled tip based systems have amazing thermal recovery and they tend to have nice small handpieces. REALLY nice for $15 add on, and with a nice big fat chisel tip, would be awesome for portable eskate repairs/mods.
Aaaand, I have some new loose A123 cells and a new spot welder. For science? j/k I can't afford to burn 3 cells out of my spare set of 12... So hard to replace!
EDIT A123 are 3.3 nominal 3.6 max, so 4s