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BQ24041 Automatic Stop Charging When Battery Full

Hong Tay
Expert 2465 points
Other Parts Discussed in Thread: BQ24041, BQ24040

Hi sir,

For BQ24041, is there any way to design for the function to stop charging when battery is full without fuel gauge chip?

Thanks.

Hope to hear from you soon.

  • 0
    TI__Genius 11480 points
    HI Hong,

    The bq24041 will terminate charge according to the resistor on the Pre-Term pin. Charge termination current will be some percentage (between 5 and 50% of Icharge).

    You can also disable the charger by pulling the TS pin to ground.
  • 0 in reply to David Wiest Jr
    TI__Genius 11480 points
    Hong,

    Please disregard the previous comment. It was brought to my attention that I made a mistake in reading the datasheet. My above post is true for the bq24040, but not the 24041. The /bat_en pin can disable the charger. However, the charger should still terminate charge at termination current