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Putting AGM (gel lead acid)batteries together in case/box.

Discussion in 'Electrics UK' started by woodman-46, 9 Oct 2017.

  1. woodman-46

    woodman-46

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    I hope this comes under a general electrics question!
    I am building a small motorbike for my young son to ride around a paddock and the motor is 48v. I am going to power the motor with four 12v 15ah AGM batteries but space is fairly tight. I want to put the batteries together in series to create 48v but need to know if I can butt these batteries up against each other with no space in between or do they need padding between them. I am hoping the first is ok.
    I have tried various electric bike forums but had no advice.
    Thanks in advance
     
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  3. bernardgreen

    bernardgreen

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    If they are not going to get warm when powering the bike or during re-charging then they can be butted up against each other.
     
  4. magicmushroom666

    magicmushroom666

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    I've butted up such batteries in industrial applications many times without trouble.
     
  5. woodman-46

    woodman-46

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    Appreciate your input. Thanks
     
  6. gblades

    gblades

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    The batteries in interruptible power supplies are normally stuck side by side by using just a foam pad. These things are often rated to discharge the batteries in 5-10 minutes at full rated load
     
  7. ban-all-sheds

    ban-all-sheds

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    Wouldn't some kind of padding to prevent them rubbing against each other be advisable? This is an off-road vehicle...

    Static, mobile, rough service?

    And UPSs tend not to get shaken about...
     
  8. chappers

    chappers

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    silicone them together
     
  9. SimonH2

    SimonH2

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    They should be clamped down firmly so that wouldn't be a problem.
     
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  11. woodman-46

    woodman-46

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    Thanks for all your answers
     
  12. ban-all-sheds

    ban-all-sheds

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    I think you might be surprised by how much firmly clamped down things can vibrate and rub together in off-road vehicles.
     
  13. magicmushroom666

    magicmushroom666

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    Yeah I've not used them in anything mobile, but if they are clamped tightly, Should be OK? And I guess its not going to be used daily for years to come?
     
  14. SimonH2

    SimonH2

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    Actually no I wouldn't, having been involved in some fairly serious "off roading". But a properly clamped down battery won't move - if it does move then it's not properly clamped down ;)
     
  15. mattylad

    mattylad

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    Even when clamped I'd still be inclined to put a rubber/foam piece between them if they are in something that's going to be knocking around a fair bit.
     
  16. ban-all-sheds

    ban-all-sheds

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    [​IMG]
     
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