There are shops like Batteries Plus who will weld tabs onto your cells if you ask. I've had that done many times. Any shop that rebuilds battery packs can do this if they want to. The tabs solder nicely, and you can ask for more than the standard number of welds if you need it. On Thu, Jul 25, 2013 at 6:43 AM, Mark Hanchey wrote= : > On 7/24/2013 10:20 PM, veegee wrote: > > I just tested the car battery by hand, using two large lag screws for > > electrodes. I tapped them together against some scrap metal and made th= e > > tap as short as I physically could. Luckily I was wearing goggles - the > > tip of one of the bolts completely melted off amidst a spectacular > > display of sparks. A much larger weld was made than what I require. > > There's definitely enough power available. The most critical factor her= e > > is control. > > > > MgChemicals makes a conductive epoxy but I haven't tried it. > > http://www.mgchemicals.com/products/adhesives/electrically-conductive/sil= ver-conductive-epoxy-moderate-cure-extreme-conductivity/ > > Mark > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .