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Rover 400 series Battery Damage

Battery Damage Identification

   Common battery faults include:

    Corrosion at the Battery terminals
    Shorted cell due to failure of the separator
    Shorted cell or cells due to build up of shed plate material
    Broken internal connections due to corrosion
    Broken plates due to vibration and corrosion
    Low electrolyte level
    Cracked or broken case
    Damaged or Broken terminals
    Sulfation after prolonged disuse in a low or zero charged state



Corrosion at the battery terminals

Corrosion at the battery terminals can cause difficulty when starting due to electrical resistance. At times there will be a white powder built up around the battery terminals. This is usually lead sulfate and is toxic care should be taken not to inhale or ingest the powder, skin contact should be avoided. The corrosion is normally caused by a poor seal or damage between the plastic case of the battery and the lead battery post, leaking sulfuric acid will react with the lead battery posts. Generally only cured with a replacement battery. Although an epoxy 2-part adhesive can be used to seal around the terminal base. The lead sulfate should be removed with a wire Battery Post brush and the terminals coated with petroleum jelly.



Cell Failure

Little can be done to prevent cell failure of the standard maintenance free battery, generally higher Temperatures will cause the cells to collapse faster.



Low Electrolyte Level

Once again with maintenance free batteries very little can be done to about this problem. In non sealed batteries a regular check and top-up of the electrolyte will help to extend battery life.



Cracked or Damaged case

Leaking electrolyte will cause substantial damage to the vehicle body work and the battery should generally be replaced as soon as possible, repair to the case is generally not advised, and the method will vary dependent upon the case material.




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