This is a FNIRSI SWM-10 battery spot welder, used to spot weld nickel strips to lithium batteries i.e. 18650 and 21700 cells for repairing, rebuilding, or building battery packs.
I haven't seen a teardown of this device yet so I thought I'd make one. I have not had a chance to use the device in depth yet so this is not a review, it is just a teardown for you to see what is inside the device. Overall, my impressions of it are pretty good and I think it's a decent device.
Warning: The background music used in this video was generated using AI. The voice and video are human.
00:00 Introduction
02:13 UI and Settings Menu
07:05 Pass Through Charging
07:57 Teardown and Disassembly