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Battery charging question

Discussion in 'Power Electronics' started by Goldhelmeth, May 26, 2020.

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  1. Goldhelmeth

    Goldhelmeth

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    Apr 8, 2020
  2. bertus

    bertus Moderator

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    Nov 8, 2019
    Hello,

    I do not read french, but it looks like a SLA battery.
    Use a charger specialy made for SLA batteries, to avoid over pressure.

    Bertus
     
  3. Goldhelmeth

    Goldhelmeth

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    Apr 8, 2020
    Thanks for the answer,
    But on the picture it says it's valve regulated
     
  4. bertus

    bertus Moderator

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    Nov 8, 2019
  5. Goldhelmeth

    Goldhelmeth

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    Apr 8, 2020
    If I understand correcly SLA and VRLA batteries are the same right ? To be fair the price hurts a bit ... Would this do ?
     

    Attached Files:

  6. WHONOES

    WHONOES

    886
    218
    May 20, 2017
    No. The charge current is to high for your sealed lead acid battery. It should be charged at a current of not more than 25% of capacity. You also need a charger that starts in constant in current mode and then switches to constant voltage mode when the charge current dips below the level set for the constant current mode and then either switches to maintenance mode or switches off when the battery is fully charged.
     
  7. bertus

    bertus Moderator

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    Nov 8, 2019
    Goldhelmeth likes this.
  8. Goldhelmeth

    Goldhelmeth

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    Apr 8, 2020
    I see... It is more complicated than what I thought it would be.... Still do you think the charger you mentionned earlier will do ? It is one amp
     
  9. WHONOES

    WHONOES

    886
    218
    May 20, 2017
    Sorry, but your quote of the charge current is not strictly correct.

    See the attached link for a more comprehensive description for charging SLA's particularly page 4 about 2/3 of the way down.

    https://www.silvertel.com/images/technical-articles/charging_sealed_lead_acid_batteries.pdf
     
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