The comments say I can’t even figure out the AWithZ spot welder; honestly, I haven’t, I’ve tried lots of settings. Because the Jiashikai negative is steel, I test on a stainless-steel knife: for 0.1 nickel strip on this cell the gear only needs to be 1-point-something, 1.5 is enough, and there won’t be a problem; how many gears 0.15 nickel strip needs I don’t know, bumped to 2.5 to try: too high a gear blackens it, it’s already throwing sparks, the result isn’t great, probably still not dialed in; the cells are bought and on the way, I’ll keep experimenting with this AWithZ spot welder. Title: 9.9 gears, 0.1 only needs gear 1.5–1.8; “I haven’t figured it out and you’re still buying it after me, unbelievable”. 207 comments: ordered from your storefront, arrived today and won’t power on (check whether it has charge; if it doesn’t work, return it right away); my microwave-transformer welder failed too (you’re going down the road I went down; the money for a hand-build buys one of these); a Zhongwei Zhixing 30s can’t weld 0.1 nickel-plated stacked on 0.1 copper to a Jiashikai negative (0.1 copper needs a ¥400–500 class machine); fine for beginners to play with but later you’ll definitely want a capacitor unit (yep); get a UF20B; how about the Xiaoqiang.