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Use as Lipo charger?

  • Ignatus Sunday, January 15, 2017 12:30 PM Reply

    Since this module has a current limiter/potentiometer, could I use it as a "simplified" Lipo-pack charger?


    I would feed it 12V 5A convert output to 14.4V and feed that to a 4s3P  9,9Ah Lipo pack which I protected with SKU: 255209 ?


    Of course, only under supervision since it doesn't have any auto-cut off feature.

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  • Maye_Tao Wednesday, January 18, 2017 10:48 AM Reply

    Hello @Ignatus

    Theoretically, you can do this. But it hasn't been tested yet.

    Be happy. ( *^_^* )
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  • matrix-neo Moderator Wednesday, January 18, 2017 12:08 PM Reply

    if by "simplified" you mean you unplug charger about halfway through charge cycle(CC phase), yes it will work, otherwise dangerous for both you and battery, a proper LiOn smart charger has

    both CC and CV phases, the CV phase is the safety part where it prevents typical LiOn cell from going above 4.2v and no, this part is not optional, for more info click here


    quote from mpoweruk;

    Constant-current Constant-voltage (CC/CV) controlled
    charge system. Used for charging Lithium and some other batteries which
    may be vulnerable to damage if the upper voltage limit is exceeded.
    The manufacturers' specified constant current charging rate is the
    maximum charging rate which the battery can tolerate without damaging
    the battery. Special precautions are needed to maximise the charging
    rate and to ensure that the battery is fully charged while at the same
    time avoiding overcharging. For this reason it is recommended that the
    charging method switches to constant voltage before the cell voltage
    reaches its upper limit. Note that this implies that chargers for
    Lithium Ion cells must be capable of controlling both the charging
    current and the battery voltage


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  • Ignatus Wednesday, January 18, 2017 4:37 PM Reply

    Hello @Maye_Tao and Happy Holdidays to you


    @matrix-neo


    Well, SKU: 255209 was suposed to protect from overcharging.


    Anyhow, I would like to thank you for the link. - Very informative material! (Also bookmarked it for future reference.)


    So, I've come to the conclusion that it is possible to use this as an emergency charger if one takes utmost precautions, but it is not recommended.


    I've spent approx. $140 on the battery-pack components and plan to build another, larger one soon.


    Guess it is about time to invest in a proper Lipo charger and protect my battery investment, house and personal well-being.


    Greetings,

    Ignatus



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    post edited by Ignatus on 1/18/2017 at 5:10 PM
  • matrix-neo Moderator Wednesday, January 18, 2017 5:45 PM Reply

    good call!


    Resistance is futile-give in to DX gadget craving!
    also a voluntary mod-be nice please!
    Have an enquiry? https://cs.dx.com/ticket/index


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