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Charge Batteries in Series

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Discussion in 'Power Electronics' started by mcasey, Jan 26, 2018.

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  1. Jan 26, 2018 #1
    mcasey

    mcasey

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    Jul 9, 2016
    I have two 12 volt batteries wired in series producing 24 volts. Can I charge them wired this way with a standard 12v charger?
     
  2. Jan 26, 2018 #2
    Alec_t

    Alec_t

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    No. Charge them individually.
     
  3. Jan 26, 2018 #3
    mcasey

    mcasey

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    Jul 9, 2016
    Please explain. How are golf carts charged? They have several batteries wired in series. They do not have to be charged individually....
     
  4. Jan 26, 2018 #4
    BobK

    BobK

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    They are probably charged in series. If the batteries are identical and in the same condition, it will sort of work. A balancing charger can charge batteries in series while treating each one individually by bypassing it once it becomes fully charged. This is typically done with LiPo batteries.

    Bob
     
  5. Jan 26, 2018 #5
    Alec_t

    Alec_t

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    In other words, you need a special charger to charge batteries in series; not a standard 12V charger.
     
  6. Jan 26, 2018 #6
    davenn

    davenn Moderator

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    does 24V = 12V ..... no

    use a 24V charger
     
    Last edited: Jan 27, 2018
  7. Jan 27, 2018 #7
    Kiwi

    Kiwi

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    Jan 28, 2013
    Two 12v batteries in series require a 24v charger.
    Batteries have to be identical for this to work correctly.
    The charger also has to be the correct type for the batteries being charged.
     
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