liesure battery

Discussion in 'The Beginner' started by herbies, Jun 26, 2013.

  1. herbies

    herbies Read Only Funster

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    does anyone know how to check the leisure battery is working full power please
     
  2. hilldweller

    hilldweller Funster Life Member

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    You've got to put a known load on it, run it down to 12V and then work out how many ampere hours you got out of it.

    Just like running your diesel tank dry, it's the only way you know what you're going to get out of a tank.
     
  3. Paramotormanal

    Paramotormanal Read Only Funster

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    Just pop along to any motorist discount centre who sells battery's they will do a drop test on it for you free of charge lol pardon the pun, make sure it has had a full charge the night before, I have one of these units if you have a weak battery it will detect it.:thumb:
     
  4. pappajohn

    pappajohn Funster Life Member

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    I may be cynical, but...

    in an ideal world....yes, your battery is good...we need not sell you a new one.

    In the real world....batteries buggered mate, we have this one in stock. :Doh:
     
  5. quickweh

    quickweh Funster

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    There are many posts on all motorhome forums on this subject
    This is not always true. I recently had to replace two Banner batteries and was fortunate to live near to the Banner depot. They did the drop test and informed me that the batteries were ok. I had checked the batteries myself and found that they provided only 3 Amp hours of use for each battery. Banner then agreed to bench test them and found them to be faulty in deep cycle mode but ok for engine crank amperage.
    I agree with the first reply, fully charge the battery, disconnect the charger, leave for an hour to check that you have about 12.8 volts at the battery terminals. Then run a 5 Amp load till the battery shows 12 volts and check the elapsed time to give the Amp hours.
    There are many posts on the forums on this, thats how I got to the bottom of my problems with the Banner batteries.:thumb:
     
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  6. Paramotormanal

    Paramotormanal Read Only Funster

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    Two true but you have to start somewhere and my snap on drop tester will certainly detect a weak battery and you can cook your toast on the bars whilst it is lol:BigGrin:
     
  7. pappajohn

    pappajohn Funster Life Member

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    won't do your leisure battery any favours though.

    A genuine leisure battery is designed for long, low discharge currents, unlike the batteries which high current drop testers are intended for, starting batteries, which have a structure designed for short, high current discharge.

    Leisure battery current is likely to be around 20amp max for a few hours, whereas a starter motor may draw 600plus amps for a few seconds at a time.
     
  8. Paramotormanal

    Paramotormanal Read Only Funster

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    Bugger shot down again!!!!! What about the toast,too light lol:cry:
     
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  9. cmcardle75

    cmcardle75 Read Only Funster

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    Actually, leisure batteries can be officially rated for quite significant levels of CCA as well, often in excess of the actual starter battery. Very useful for giving yourself a jump start.
     
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