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  1. #1
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    How to recharge a lithium battery pack ?

    Hi.
    A Hoover brand 18V battery pack with 5 cells has three terminals. (+), (-) and (C)
    How to learn what signal this particular 'C' battery pack contact expects to enter into charging mode ? The pack uses a microcontrolled management circuitry in it.
    For sure signal is not needed at 'C' to discharge the battery. It powers the load fine with nothing connected to 'C'

    ----> https://www.ebay.com/itm/Hoover-LiNX...EAAOSw5~ldxaXD

    Am using this orphan pack for another application and do not have the charger. When applying 24V to (+) and (-) and jumping 'C' to (+) ; cells charge fine for 3 seconds, slowly raising voltage. Repeatedly jumping, they keep rising (charging) fine. Could the pack expect a pulsing signal to terminal 'C' ? Anyone knows ?
    Abolish the deciBel !

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    Re: How to recharge a lithium battery pack ?

    Hi,

    Read about the charging methods.
    Read through battery manufacturer provided documents.
    Read through batteryuniversity.com
    Read through other informations.

    At each source you will immediately learn that
    When applying 24V to (+) and (-)
    ...is not a good idea.

    Klaus
    Please don´t contact me via PM, because there is no time to respond to them. No friend requests. Thank you.



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  3. #3
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    Re: How to recharge a lithium battery pack ?

    I had read what you suggested and also found nothing from the manufacturer; that is why posted here if someone knew details.

    The (+) and (-) terminals of the battery pack are not connected to the cell series; there is mosfets driven by the charging management circuit that 'modulate/control' charging according to each cell balancing status, voltage, current and temperature.
    Similar to :
    Abolish the deciBel !



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