드론용 21700 배터리팩 스팟용접 점용접 Spot Welding 21700 3S 3rd party battery packs for drones

21700 3S 3rd party battery packs for drones
nickel plate thickness is 200micron and welder power outage was 2.5kW. Welding timming was trimmed depends on color of nickel plate after welding.

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