I would /not/ buy any $20-50 class spot welder. If you do, you will need to modify it yourself to be "usable". I bought a similar model, tested it, and it blew up on setting 3 out of 7: https://www.youtube.com/watch?v=KJLoYJSm0E0 FYI the fix for this is apparently to separate the MOSFET/control circuitry power from the "weld" power (e.g. LiPo or car battery), such that when the voltage drops on the weld power source, it doesn't cause the MOSFETs to drop into a linear mode and overheat/blow up.
A good spot welder is either the Malectrics or kWeld, which will set you back between $150-255. I'm also backing the Nano Spot Welder, which was cheaper on Kickstarter, which was $80 at the time I backed it, granted it's less capable, only designed for 0.15mm nickel or smaller. Nano: https://www.kickstarter.com/projects/repowered/nano-spot-welding-just-got-easy-and-affordable Malectrics: https://malectrics.eu/ kWeld: https://18650shrinkandcellholders.com/kweld/ However, in general I would agree that spot welding is not for the faint of heart, and not a beginner technique, if you do decide to spot weld a large pack, make sure you practice lots and get the technique down first before you build anything that can cause serious damage if done wrong. -- Sent from: http://electric-vehicle-discussion-list.413529.n4.nabble.com/ _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
