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SOC1 and SCOF

Richard Brisk
Intellectual 310 points

I have read the bq27425 spec for the two parameters SOC1 and SCOF, but I do not understand them.

Q1) if SOC1 is set will I not get a valid reading for SOH % or the StateOfCharge?

Q2) If SOCF is set will I not get a valid reading for SOH % or the StateOfCharge?

  • 0
    Genius 3970 points
    Hi Richard,

    The SOC1 and SOCF bits only indicate to the host if the battery's state of charge is running low (SOC1 and SOCF essentially mean "low battery" and "critical battery"). It is not an indication of an invalid SOC or SOH reading.

    The SOH Status register (0x21) can indicate if the SOH reading is valid. 0x0 indicates an invalid reading because no battery is connected, 0x1 means an "instant" SOH reading is generated from previously learned data and may not be accurate, 0x2 indicates that it has made an initial estimation of SOH but may not be completely accurate, and 0x3 indicates that an accurate SOH has been determined.

    Jason
  • 0 in reply to Jason Gin
    Intellectual 310 points

    Jason,

    Your answer was very helpful. 

    Thanks