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NiCAD Battery Charger Replacement

Discussion in 'Power Electronics' started by COlson, Mar 26, 2009.

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  1. COlson


    Mar 22, 2009
    Hello all: I'm totally new to this forum and have a couple of questions I'll be posting. I hope someone can point me in the right direction and/or correct forum. I posted under Components but no reply. Perhaps this is too basic a question? Or wrong thread. Thanks for the advice.
    I need to replace a battery charger for a Ni-Cad set of batteries. The battery package appears to be 4AA size batteries and says Ni-CD AA700mAh 4.8V on it. I purchased a transformer/charger from the OEM for a rediculous amount of $$$ and need two more (ouch). However, I have a dozen or so very similar around the house and hope I could I could substitute them if I rewire with the correct male plug.
    The OEM charger says Input 120V 60Hz with output of 5.8V/100mA. I've searched everywhere and can't find exactly that transformer. One company says their 6V/1000mA will work fine because the batteries will only draw what they need.(?) If that's the case, why have such a wide selection of amps available? We could all just use one amperage?
    Here's the real question.
    What I hope to use is a cell phone charger (for example) that says 120V 60Hz input with a 5.9V/300mA output. I have about a half dozen of these around the house and can certainly hook a DMM to verify.
    Will this work without burning out the batteries or frying the charger?

    Thank you so much!!

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