leisure battery

nelliethedog
nelliethedog Forum Participant Posts: 41
edited January 2017 in Motorhomes #1

Hi all, started m/h today after 4 weeks and after running the engine for 30 mins leisure battery was showing 85% on the control panel but as soon as I switched the engine off the level dropped to zero in a couple of minutes with no draw showing on the control panel. Battery is 3 1/2 years old and normally reaches full charge in minutes. Any help welcome

Comments

  • ABM
    ABM Forum Participant Posts: 14,578
    1000 Comments
    edited January 2017 #2

    Assuming  you  have  the  'battery  by  your  home,  then

    the  best  I can  suggest,  NTD,  is  to  remove  it  and

    get  a  smart  charger ( if  available ),  connect  it  & 

    leave  for  a  good  few  hours.  Then  check  again --

    if  there  is  no  significant  improvement,  ( I'm  not  asking

    nor  expecting  perfection  !! )  then  it's  more  than

    likely  you  are  the  proud  owner  of  one  deceased

    lump  of  lead  in  acid  !!  Sorry  for  the  news  frown

    Brian

    P.S.  And  I  did  NOT  say  Bread  in  Aspic  !!

     

  • EJB986
    EJB986 Forum Participant Posts: 1,153
    1000 Comments
    edited January 2017 #3

    A battery can not be charged in a few minutes.

    The voltage reading after a short charge (30 mins)  will decay slowly over a few hours and end up the same as it's pre charged voltage....in your case did it really charge the battery at all?

    After charging use a multimeter  at least 12 hours after charging to get the real state of the battery.

    HTHsmile

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