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 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

    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
    O'Rileys to name a few
  5. olow

    olow Member

    probably had a dead short