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Regarding Battery charger IC

Discussion in 'Sensors and Actuators' started by shreya shah, Sep 28, 2021.

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  1. shreya shah

    shreya shah

    6
    0
    May 3, 2021
    Hello team,
    I have 9.0V ,7.8AH ,3S3P Lion rechargeable battery. Please suggest me suitable battery charger IC or battery charge scheme without IC.
     
  2. Alec_t

    Alec_t

    2,982
    807
    Jul 7, 2015
    Li-ion cells have a nominal voltage of 3.7V, so a 3S3P battery should provide a nominal 3 x 3.7V = 11.1V. Are you sure of your battery's voltage and chemistry?
     
  3. Bluejets

    Bluejets

    5,037
    1,052
    Oct 5, 2014
    Maybe it's similar to this.........in which case, plenty of smart r/c battery chargers will work.
    Some, say around $50 mark are "combination" style and not necessarily suited to LiFe and LiPo.
    More expensive units have these battery type as individual selections in the charger menu.
    HTRC are just one of many, ranging from $70 odd up to maybe $160.

    LiFe.jpg
     
    Last edited: Sep 28, 2021
  4. Audioguru

    Audioguru

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    Sep 24, 2016
    The battery shown is labelled ":LiFe" which has a lower voltage than LiIon.
     
  5. shreya shah

    shreya shah

    6
    0
    May 3, 2021
    Li-ion cell with 3.0 V is also came. Thanks for your reply i am currently working on charging section of battery if possible pls help to choose IC or power management system .
     
  6. shreya shah

    shreya shah

    6
    0
    May 3, 2021
    Thank you for your reply my project requirement is LION 9.0V,7.8AH rechargeable battery
     
  7. Harald Kapp

    Harald Kapp Moderator Moderator

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    2,717
    Nov 17, 2011
    As others have stated, getting 9 V from LiIon cells is not possible (at least not directly) as the cell voltage is ~3.7 V. Show us the specifications (datasheet, photo) of your battery, please.
     
  8. Alec_t

    Alec_t

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    807
    Jul 7, 2015
    Aren't the 3V cells Lithium Manganese Dioxide?
    You need to be sure of the chemistry. If you don't charge Lithium-based cells correctly you are likely to have a fire or explosion.
     
  9. Audioguru

    Audioguru

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    Sep 24, 2016
    Little 3V lithium coin cell batteries like CR2032 use Lithium Manganese Dioxide. They are not rechargeable.
     
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