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Li-Ion for Li-Poly

Discussion in 'Electronic Repair' started by D Yuniskis, Dec 26, 2010.

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  1. D Yuniskis

    D Yuniskis Guest


    One of my portable DVD players uses a (nominal) 7.4V 2600mAH
    Li-Poly battery. One cell appears to be toast (*loaded* voltage
    RAPIDLY drops from ~3.5V to ~1.8V after ~10 minutes of use;
    other cell holds fast at ~3.5V).

    I was thinking of replacing them with a pair of 18650's
    as they occupy almost exactly the same space (different
    form factor, same volume -- of course!).

    It is my understanding that the charging technique for
    LiPoly and LiIon are identical (?). I'd prefer not to have
    to reengineer the charger (microcontroller controlled).

    Given my druthers, I'd replace with NiCd but that would
    require way too much work!

    Any other pointers to watch for (besides the usual, "Oh
    My God! You can burn your house down!!")?


    P.S. pointers to a source of reliable 18650's would also
    be welcome.
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