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ARARGGHHH premature NiCd failure

Discussion in 'Electronic Basics' started by AC/DCdude17, Jul 29, 2004.

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  1. AC/DCdude17

    AC/DCdude17 Guest

    X-No-Archive: Yes

    Apparently one of the three cells died prematurely. I'd let it charge
    overnight and battery gets pretty hot. I use the phone for about 30 min
    and it suddenly loses power. When I pull the battery out, two cells
    have 1.25V and the dead cell is dropped to 50mV. The whole phone with
    battery pack was bought six months ago.

    This is what happened to my other phone too. I've replaced the
    batteries in other phone by soldering the connector onto regular AAA
    NiMH batteries and it's still going strong.

    Original battery pack is a 3.6V 3- 2/3AA cell 300mAh. 2,300 mAh AA's
    will fit and cost about the same as 700mAh AAA's but I'm not sure if the
    charger can handle such a large capacity cells, so I'm going to go with

    Regular 700mAh AAA Energizer NiMH batteries cost 1/2 to 2/3 of buying a
    new comparable phone and it requires soldering. Buying a prebuilt NiCd
    pack cost as much as or more than buying a whole new phone.

    Are battery packs supplied with ~$20 cordless telephone just not the
    same quality as replacement battery packs or regular Eveready AAA NiMH
    batteries? Do replacement batteries cost more than the whole phone just
    because of higher profit margin or are they higher quality too?
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