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    Looking for 36V Battery < 100Whr with UN 38.3 Certificate

    I am looking at my options for carrying Lithium Battery packs with me on a passenger aircraft so I can travel with my electric Brompton. What started as an easy survey of iATA guidance documents turned into many hours research into the rabbit hole of UN 38.3 ( UN Manual of Tests and Criteria...
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    Spot welding fuses to individual 18650 cells?

    The oxide layers must be broken through or else it can affect the integrity of the spot weld , this is done by the force of the spot weld electrode pushing down on the strip/wire and battery end cap (more force is better). (and perhaps counter-intuitively, the smoother the two surfaces being...
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