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Rechargable batteries last longer than Duracell in torches !

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  • 13-11-2009 3:46am
    #1
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 90,921 Mod ✭✭✭✭


    Rechargeable batteries self discharge so non-rechargeables are better for things like remote controls or clocks that you want to have powered for months. Or for emergency torches where you want light after leaving for a year or two.

    But if you know when you will need the light, a fully charged NiMH will beat a brand new Alkaline battery.

    linkies
    http://www.candlepowerforums.com/vb/showthread.php?t=64660 Alkaline
    http://www.candlepowerforums.com/vb/showthread.php?t=79302 NiMH

    Alkaline then Rechargable NiMH
    AAAlkalineat1ampSortTable.gifNiMh1AmpSorted.gif


    At high discharge rates NiMH rechargable batteries BEAT Duracell Ultra !




    Alkaline at 500mA discharge rate have a higher capacity than at 1A but still less than 2000mAh which was mid way down the NiMH chart.
    AAAlkalineat05ampSortTable.gif


Comments

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    #2
    cnocbui
    Registered Users Posts: 19,908 ✭✭✭✭cnocbui


    The self discharge of NiMh has pretty much been eliminated By Sanyo in their Eneloop NiMh batteries. They will still retain 70-85 % of their charge after a year.

    There are simmilar variants by other manufacturers like Panasonic with their infiniums.

    They don't come in quite the high capacities normal NiMh's do and they cost a bit more:

    http://en.wikipedia.org/wiki/Low_self-discharge_NiMH_battery


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    #3
    Dankoozy
    Closed Accounts Posts: 1,115 ✭✭✭Dankoozy


    anything that is marked as 'pre charged', 'ready to use'' or 'hybrid' lose far less of their capacity. ordinary nimh loses 30%

    duracell also makes excellent rechargeable batteries


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