PHil, I dont understand how those with the 3 or so terminals work.
If I read and understood one 3 contact type properly, it also sensed Temperature when charging and regulated the input accordingly.
Maybe to use less material to make them smaller and lighter, they cut back on the case material which would have absorb some heat during a charge.
If you were to open that battery up, its possible each cell has its own line in and what ever charges it and the devise it powers, has the necessary charging circuitry to connect it all up.
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