Replacement Battery

Discussion in 'Maintenance' started by bradt, Apr 5, 2021.

  1. bradt

    bradt Elite Member

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    Longish run over the weekend but bike seems a bit slow when starting (was on trickle all last week ) I think maybe the battery is on the way out. I bought a new one about a year ago but not fitted it yet, question is do I need to charge the new one before fitting ?
     
    #1 bradt, Apr 5, 2021
    Last edited: Apr 5, 2021
  2. dern

    dern Well-Known Member

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    Only if it's flat.
     
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  3. Kentblade

    Kentblade God Like

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    @bradt

    Personally I charge every new battery before connecting them and putting them under a load.

    It’s fair to say most new batteries are pre charged at manufacturer, but you’ve very little idea how long ago that was and as you say, you’ve had it already a year.

    Dern, sorry, but will have to agree to disagree on that one matey, just comes down to personal preference I guess
     
    #3 Kentblade, Apr 5, 2021
    Last edited: Apr 5, 2021
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  4. Lozzy

    Lozzy God Like

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    Adam always charges new batteries when mines ready for one too
     
  5. dern

    dern Well-Known Member

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    It was a bit of a light hearted comment to be honest. I've found that they tend to start fine when I've got a new one but if it doesn't then I charge it.
     
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  6. Kentblade

    Kentblade God Like

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    Nice one, I fell for that like a kipper :)
     
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  7. dern

    dern Well-Known Member

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    It was a pretty shit dad joke to be fair :)
     
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  8. bonjo

    bonjo Active Member

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    definitely!
    IN fact if it is AGM and activated, then once every month or two even when sitting on the shelf.
    LPF's normall come 60% precharged but need to be changed before first use
     
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  9. Jez

    Jez Senior Member

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    Lead acid like to be stored at full charge and last better at full charge. when you discharge a lead acid it takes calcium out of the electrolyte and coats the plates, when fresh this is soft so when recharged the calcium goes back into the electrolyte, If you leave your battery for a long time the calcium hardens on the plates and stops them working. They can be brought back to life most times with a power supply set to max 14v 100ma for about 4 days this slowly removes the calcium without cooking the batt. , Life4po or Lion or anything lithium that is not lead acid likes to be kept at a low charge if not being used, this will give you the longest life as full charge slowly causes internal destruction.
    I have had a lot of dealings with battery's and extending their life, this was not for the bike but is the same
     
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