Ultrasonically welded battery cable.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...e_fullsize.jpg
Previously:
Power cable end stripper - GIF
Twisting cable in CERN's superconducting lab - GIF
How electrical cables are made - GIF
Multi-core cable stripping and crimping machine - video
Ratchet cable cutter - GIF
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