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Alkaline versus NiCd, NiMH batteries

Discussion in 'Electronic Equipment' started by patrickpdk, Feb 8, 2005.

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  1. patrickpdk

    patrickpdk Guest

    I bought a cordless mouse that takes 2 AAA batteries. I found that
    these wear out after about 2 weeks and want to get rechargable
    batteries but the device says "only use Alkaline batteries" - does this
    mean that I cannot use rechargable NiCd or NiMH batteries? Will these
    batteries blow up my mouse?! :eek:)

  2. .

    . Guest

    Greetings Pat..

    Of course it depends on how tight the voltage requirements are on the
    circuit. Why? Due to the fact that Ni-Cads, for example, have a voltage
    of 1.2v DC per AAA cell. 1.2v * 2 = 2.4V DC fully charged vs. 1.5 * 2 =
    3v DC for alkaline. Now, would the lower voltage 'hurt' the mouse - NO..
    In fact, I would tend to bet that it would work just fine.

    The Plan:
    The way to do this would be to get two sets (4 batteries) and an
    external charger that reverts to trickle charge after full charge is
    achieved. Run on one set and once the mouse starts to act 'squirrelly'
    due to exhausted batteries pull these out and replace them with the
    freshly charged set putting the exhausted set on charge. Cycling in this
    way will allow you to just rotate between fresh batteries.

    A good source for batteries & small chargers:

    Good luck.

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