Checking a lead-acid battery

Discussion in 'Electric Bicycles' started by dougsr.874, May 23, 2011.

  1. dougsr.874

    dougsr.874 Active Member

    From this question you will know I am a novice at electrics.....question:...how can you tell if a 12 volt LA battery is good and will hold a charge?...the charger indicates charged and a volt meter says its producing at least the 12 volts, but the battery dies immediately when put under load.
     

  2. Al.Fisherman

    Al.Fisherman Active Member

    http://compare.ebay.com/like/400047071468?var=lv&ltyp=AllFixedPriceItemTypes&var=sbar

    Either the battery needs to be replaced or the charger is not putting out. For example a 12V battery in a car, the alternator should put out between 13.8 and 14.0 volts.
     
  3. lazaruslong

    lazaruslong Member

    you can take it to almost any mech and they can do a load test on the battery but from the sounds of it that battery is gone--most charger will only read a surface charge but a load meter reads what the battery is putting out
     
  4. Al.Fisherman

    Al.Fisherman Active Member

    Umm posted 7 days ago...I guess he has taken care of it.
    Forgot to add

    Free battery test
    Auto Zone
    Advance
    O'Rileys to name a few
     
  5. olow

    olow Member

    probably had a dead short
     
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