Fitting extra leisure battery I6571 easy ?

Discussion in 'Dethleffs' started by JimboT, Feb 23, 2014.

  1. JimboT

    JimboT Funster

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    Ok we only have one leisure battery is it easy to fit another battery ?
    And if so do i need to add another charger.
    Does the battery need to be the same as one in there or can it be different AH?
    Thanks
    jim
     
  2. Wildbill

    Wildbill Funster

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    hi jim it isn't hard to fit spare leisure battery but where is your original bud
    if you are going to use one of your looker or garage use the thickest wire you can get use good quality connections and just wire it up positive to positive negative to negative and you will have extra stored power I have three lesser battery's and a solar panel and never want for 12v now
    it depends if you do a lot of off grid
    I am sur that there will be someone along soon to advise you there are lodes who have done this
    bill
     
    Last edited: Feb 23, 2014
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  3. Wildbill

    Wildbill Funster

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    ok you must have upset someone I have never seen a post this neglected
     
  4. TheBig1

    TheBig1 Funster Life Member

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    Adding a second leisure battery is a simple case of finding a suitable spot as near the original as possible and connecting up as Bill said.

    however it is best practice to make sure both batteries are the same age and condition, add a good new battery to an old tired one and it will not perform as well and if the old one fails it will kill the new one too.

    you can mix amp/hour sizes and thats no huge problem as the charger will see just one large battery combined. always best to fit as powerful a battery as will fit the space

    mounting the battery, always use a proper battery box and ventilate it to outside. a faulty battery produces gas which is explosive, so you dont want it in the van or anywhere near an ignition source. plastic boxes are a good move as less chances of anything falling on the terminals causing a short circuit.

    many vans have the leisure battery under the drivers or passenger seat. this is not ideal for access or for venting. consider putting your extra battery in a locker.

    your onboard charger or solar panels should be no problem charging the extra battery, it will just take longer to charge
     
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  5. JimboT

    JimboT Funster

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    thanks mines under the seat going to pull out and find what i have have been told its most likely a gel one.
    Wasn't sure if the standard charger would charge two.
    Will hopefully get some photos up to get ideas.
    Thanks
    Jim
     
  6. TheBig1

    TheBig1 Funster Life Member

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    if it is a gel, you will need another gel because they need different charging regimes. if replacing both with SLA or AGM you will need to switch the charger to suit
     
  7. Reallyretired

    Reallyretired Funster

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    Battery boxes available at a reasonable price from fleabay.
     
  8. pappajohn

    pappajohn Funster Life Member

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    if there is the slightest possibility the wire linking the batteries can be damaged then fit a fuse at BOTH ends of the link wire...close to the batteries.

    a couple of 30a fuses will do the job.
    even if very close its worth fitting one fuse as a precaution.

    if the wire were to get damaged and short circuit to earth theres a real possibility of a fire without fuses.
     
  9. Reallyretired

    Reallyretired Funster

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    Good advice but don't forget a 30A fuse is no good if you run an inverter, it will blow. 1000w inverter needs min 150A fuse and pro rata.
     
  10. JimboT

    JimboT Funster

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    a bit to look at here!
    Thanks for all info
    Jim
     
  11. fozzyaj

    fozzyaj Read Only Funster

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    Dethleffs i6571

    Hi, I have the same van as you and have fitted a second leisure battery myself so can advise you on wiring and fuses etc.
    If you let me have your email addresses I can discuss/ send you lots of info on your Dethleffs i6571.
    Andy - fozzyaj@talktalk.net
     
  12. JimboT

    JimboT Funster

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    Thanks some top information emailed
    Jim

     
  13. rosalan

    rosalan Funster

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    I am sorry to arrive so late on this question. I have the "T" 6571 Advantage with the two battery boxes under the passenger seat. The original single battery was a gel battery. I replaced it with a 110ah wet battery but I am now looking to find a second battery to fit in the limited height allowed for the second battery which is around 17.25cm high. Someone has kindly suggested a Varta LFD 90 but I was still hoping to get at least 100ah if possible, any ideas most welcome.

    Alan
     
  14. pappajohn

    pappajohn Funster Life Member

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    Cant help with the battery Alan, but have you reset your charger for wet batteries.

    Gell have a different charging method to lead acids and you could boil it due to the sustained higher voltage needed for gell's.
     

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