Copper spot welding for lithium packs - Vextrek (Augusta, GA)


Vextrek

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Augusta, GA
Thanks for allowing us to join the forum. Vextrek, LLC is located in Augusta, GA and we have a Sunstone Pulse Arc welder which can spot weld pure copper to cylindrical lithium ion cells. We can spot weld packs in a variety of configurations so let us know if you are in need of a replacement back for your electric dirt bike. We are not authorized to ship lithium battery packs yet but we can deliver to customers in the Augusta/Atlanta, GA area.

Background: We started out as an electric go kart company but realized that our spot-welding capabilities may be of value to other markets such as electric dirt bikes. Our go kart battery pack consists of INR Samsung 25R cells ("18650") and is configured as 22S/21P (80V nominal and 52 aHrs). The pack utilized the standard plastic cell holders and were connected with .25mm thick pure copper. We routinely pull 400-500A with this pack and we recently hit 100mph at a local dragstrip. Attached below are photos of some lithium packs we have spot welded using .25mm thick pure copper.

Here is our Facebook Page: www.facebook.com/VenomKarts/

Gary Little,
Vextrek, LLC

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