Adding a Battery to Battery (Sterling Type) Charger to Leisure Battery Bank

Discussion in 'Tech/Mech General' started by Camping Gaza, Sep 18, 2016.

  1. Camping Gaza

    Camping Gaza Funster

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    If this was to be done would you have to disconnect the existing charging circuit from the batteries?
    (ie charge from the split relay from alternator)

    Or do you simply add the BtoB into the existing system:

    Source: Vehicle Battery/ Cables to Battery to Battery Charger/ Cables from charger to the target battery bank leaving the existing charger in place?

    I'm guessing it should not make a difference....
     
  2. Al1

    Al1 Read Only Funster

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    It's what I did, after all you add solar and don't remove anything.
    Al
     
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  3. Camping Gaza

    Camping Gaza Funster

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    Thanks Al, I was wondering this tho... As the BtoB "tricks" the alternator into delivering a higher current, would the split charge if still connected "untrick" the alternator?

    I'm guessing that if you put one in Al, and yours works all ok, it does not. Hope you could confirm this for me. Cheers
     
  4. SteveandDenise

    SteveandDenise Funster

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    When I fitted our B2B I fitted a relay to disconect the standard charger as the B2B takes care of all the charging.To find a feed for your relay I used the +d from the fridge of step signal when the engine was running. A good man to ask is Jon @jonandshell or Andy @Techno they both have experience in this area
     
  5. Techno

    Techno Funster Life Member

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    What do you mean by the standard charger ?
    The rapido simply parallels the batteries when the engine is running, if you isolate the battery parallel the fridge won't get 12 volts
     
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  6. Robert Clark

    Robert Clark Funster Life Member

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    It's says in our owners handbook that the leisure batteries will never be fully charged by connecting them to the engine batteries via the split charge relay - however a good solar regulator and some solar panels will add the little extra required.
     
  7. Camping Gaza

    Camping Gaza Funster

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    @Techno ... So if I connect a BtoB and don't touch the charging circuit that's there, will it have any adverse effects or will it charge the leisure bank at full charge still tricking the alternator?
     
  8. Techno

    Techno Funster Life Member

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    Mine works fine
     
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  9. Camping Gaza

    Camping Gaza Funster

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    Thanks Techno, That's good to know. Thanks to all as well
     
  10. Techno

    Techno Funster Life Member

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    I found sometime after buying my van that someone had previously removed the battery parallel fuse on my CBE distribution panel
    The consequence of this was that my AES fridge was switching to gas without my knowledge which was a potential disaster if going for fuel
     
  11. Techno

    Techno Funster Life Member

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    IMG_5894.JPG
     
  12. PhilandMena

    PhilandMena Funster

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    Is that display showing amount of Amps being fed into your leisure battery ?
     
  13. Techno

    Techno Funster Life Member

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    Yes but not "battery" four batteries
     
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  14. SteveandDenise

    SteveandDenise Funster

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    Hi Andy
    I did try to explain this as I had done it with the advice given by members who are more familier with this type of system than me ie YOU & JON and it has worked a treat ever since. By the way I have added a third battery now and am monitering the results.(y)
     
  15. Al1

    Al1 Read Only Funster

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    Mine has been working fine, fridge works on battery and hab battery getting good charge.
     
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  16. Camping Gaza

    Camping Gaza Funster

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    Thanks Al That's all great!
    :thanks4:
     
  17. Bart

    Bart Funster

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    Mines is wired as per Techno's instructions and all was fine when we were away for 2 weeks with no EHU at all :D
     
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