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Sealed Lead Batteries: do they suffer from "memory effect"?

Discussion in 'Misc Electronics' started by [email protected], Mar 29, 2005.

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  1. Guest

    I just got a UPS that uses a sealed lead battery. I know that certain types
    of batteries will develop the so-called "memory effect" if you recharge them
    before they almost completely run out. So I'm wondering if sealed lead
    batteries suffer from the memory effect?
  2. Jerry G.

    Jerry G. Guest

    Lead acid batteries do not have a memory problem. They have other

    Never let them become fully discharged for too long. They can be
    damaged in a discharged state. They have a lifespan of about 3 to 5
    years maximum.

    If the batteries are defective in most UPS's, the UPS may not want to
    start properly. When the batteries are going bad, there will usually be
    some type of battery alarm on the UPS, if it has the option.

    It is best to replace the batteries with the proper replacements when
    due. This will allow for the best efficiency for perforance from the
    UPS, and its internal charger.

    Jerry G.
  3. CWatters

    CWatters Guest

    Yes what Jerry said. The best way to look after a Lead Acid cell is to keep
    it on charge BUT at the correct float or continious charge voltage. For a
    wet cell this is usually slightly below the fully charged voltage but not by
    much. The voltage is slightly reduced to prevent the cell "boiling" dry.
    Never leave a lead acid cell discharged as thats the fastest way to kill

    I have a deep discharge wet lead acid battery that's been hooked up to a
    float charger for 5 years. It's only taken off float charge when it needs to
    be used or the acid level checked. Still works ok.
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