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Thread: alkaline battery question

  1. #1 alkaline battery question 
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    I read a lot of articles where says that alkaline batteries can be recharged, but it also says that they lose their capacity after 50 times of recharging? What makes them lose their capacity after 50 times of recharging?

    Here are some articles:
    afroman's article
    allaboutbatteries


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  3. #2  
    Forum Freshman IrishStu's Avatar
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    It's called memory lock, is it? Not entirerly sure what causes it but I'll be keeping an eye on this thread because I'd like to know myself.


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  4. #3  
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    Nothing to do with memory, it's just that when you discharge an alkaline battery gas bubbles form around the anode (positive terminal) these bubbles do not dissappear after 'recharge' eventually this gas forms an insulating layer around the terminal resulting in no more current flow.

    memory problems are associated (mostly) with NiCad batteries.
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  5. #4  
    Administrator KALSTER's Avatar
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    Didn't know you could recharge alkaline batteries? Anyway, what about NiMH and Li-ion batteries?
    Disclaimer: I do not declare myself to be an expert on ANY subject. If I state something as fact that is obviously wrong, please don't hesitate to correct me. I welcome such corrections in an attempt to be as truthful and accurate as possible.

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  6. #5  
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    It is not wise to even attempt to recharge them (alks) as they can produce copious quantites of heat, hydrogen and oxygen and can explode.

    As for lithium ion, nicad etc etc follow the manufacturers recommendations wherever possible.
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  7. #6  
    Forum Freshman IrishStu's Avatar
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    Quote Originally Posted by Megabrain
    As for lithium ion, nicad etc etc follow the manufacturers recommendations wherever possible.
    Some sound advise if I ever did see it . Anyways, by "memory lock" I meant that if you recharge a battery that's, say, 3/4 empty it thinks that it is 100% empty and will only last 3/4 of the time then it should do. I don't know if this can be said for the humble AA battery but I know that older cellphone and laptop batteries suffered from this problem.
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  8. #7  
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    Quote Originally Posted by Megabrain
    Nothing to do with memory, it's just that when you discharge an alkaline battery gas bubbles form around the anode (positive terminal) these bubbles do not dissappear after 'recharge' eventually this gas forms an insulating layer around the terminal resulting in no more current flow.

    memory problems are associated (mostly) with NiCad batteries.
    Can u give me the reaction of forming gas bubbles, please?
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