# How To Attach Series/Parallel Cells Without Soldering Them? **URL:** \ **Category:** EV Small Talk\ **Created:** [December 9, 2008, 11:03am UTC](https://community.electricforum.com/t/how-to-attach-series-parallel-cells-without-soldering-them/1074 "2008-12-09T11:03:13Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![chiques](https://avatars.discourse-cdn.com/v4/letter/c/50afbb/32.png) [@chiques](https://community.electricforum.com/u/chiques)\ **Post date:** [December 9, 2008, 11:03am UTC](https://community.electricforum.com/t/how-to-attach-series-parallel-cells-without-soldering-them/1074/1 "2008-12-09T11:03:13Z")
I’ve been reading up on using Lithium-Ion cells. One thing that I’m still a little baffled is on how to attach them when using series/parallel configurations. The reading I’ve done says that using a very hot soldering iron on the anode and cathode are not good for the cell and can actually ruin them. I’ve taken apart a few laptop battery backs and noticed they are some how “welded” with a small ribbon like metal strips. I can see the ribbon is some how arc-welded or “hooked” into the cell. Are there tools or kits to do this with? ---
**Author:** ![frodus](https://avatars.discourse-cdn.com/v4/letter/f/e95f7d/32.png) [@frodus](https://community.electricforum.com/u/frodus)\ **Post date:** [December 10, 2008, 9:01am UTC](https://community.electricforum.com/t/how-to-attach-series-parallel-cells-without-soldering-them/1074/2 "2008-12-10T09:01:41Z")
yes, there are machines that weld the tabs on the ends, but they’re not cheap. Soldering will damage them. Where’d you get them? what do they look like? ---
**Author:** ![chiques](https://avatars.discourse-cdn.com/v4/letter/c/50afbb/32.png) [@chiques](https://community.electricforum.com/u/chiques)\ **Post date:** [December 10, 2008, 10:01am UTC](https://community.electricforum.com/t/how-to-attach-series-parallel-cells-without-soldering-them/1074/3 "2008-12-10T10:01:24Z")
Does anyone know what these “welding” machines are called? I don’t feel too confident getting my arc welder out and zapping my lithium ion cells :rolleyes:😕… ---
**Author:** ![frodus](https://avatars.discourse-cdn.com/v4/letter/f/e95f7d/32.png) [@frodus](https://community.electricforum.com/u/frodus)\ **Post date:** [December 10, 2008, 12:19pm UTC](https://community.electricforum.com/t/how-to-attach-series-parallel-cells-without-soldering-them/1074/4 "2008-12-10T12:19:54Z")
search “battery tab welder” on google ---
**Author:** ![woodrufj](https://avatars.discourse-cdn.com/v4/letter/w/c89c15/32.png) [@woodrufj](https://community.electricforum.com/u/woodrufj)\ **Post date:** [December 10, 2008, 11:38pm UTC](https://community.electricforum.com/t/how-to-attach-series-parallel-cells-without-soldering-them/1074/5 "2008-12-10T23:38:55Z")
Battery spot welder will do the job. They’re on the order of $2500 now though. I’m building my own from some big capacitors and left over pieces for about $80. I’ve got some experimenting to do, since my first attempt blew a hole in an old alkinline battery I tested it on. Now I have nickel tabing and will try it for real. Here’s a guiding website for a DIY set up. [http://www.ledhacks.com/power/battery\_tab\_welder.htm](http://www.ledhacks.com/power/battery_tab_welder.htm) Jay W ---
**Author:** ![chiques](https://avatars.discourse-cdn.com/v4/letter/c/50afbb/32.png) [@chiques](https://community.electricforum.com/u/chiques)\ **Post date:** [December 12, 2008, 1:12pm UTC](https://community.electricforum.com/t/how-to-attach-series-parallel-cells-without-soldering-them/1074/6 "2008-12-12T13:12:11Z")
You guys rock! Now that I have the keywords straight I’ll move on. Thank you everyone!:D:D:D:D:D