This is a new Spot Welder cheap one and nice – watch this video to learn more The battery capacity is 7Ah (not tested) – lithium 4.2V
Aliexpress: http://bit.ly/2N0Zu7F
Ebay: http://ebay.to/3jS9N9M
Amazon: https://amzn.to/3diKHzU
Ohter spot welder links: Aliexpress: https://bit.ly/2H5ZlMW
the best so far: https://s.click.aliexpress.com/e/_A5nxIK
https://bit.ly/3lT31ke https://bit.ly/3nTZEev
Ebay: https://ebay.to/3nSnszn
Amazon: https://amzn.to/3nSnIyl