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BQ34Z100: BQ34Z100PWR Battery Fuel gauge

Balabhaskar V G
Prodigy 75 points
Part Number: BQ34Z100
Other Parts Discussed in Thread: GPCCHEM

Tool/software:

Hi,

I am using the above mentioned part-number (BQ34Z100PWR) for measuring my Battery gauge reading , When I Disconnect the battery and connect it again the reading is not Accurate there will be some Abnormalities like when the battery is fully charged it shows only 90% charge in the Battery. 

  • 0
    TI__Genius 13290 points

    Hi,

    Did you calibrate the gauge?

    Have you gotten a ChemID match using the GPCChem tool?

    Did you complete a learning cycle?

    Regards,

    Evan

  • 0 in reply to Diego
    Prodigy 75 points

    Yes,

    Did you calibrate the gauge? Yes Caliberated using BQ-Studio

    Have you gotten a ChemID match using the GPCChem tool? Yes 

    Did you complete a learning cycle? Yes

    the problem arises while disconnecting and connecting the battery continuously, while Disconnecting and connecting the battery can there be a change in impedance reading by the fuel gauge .

  • 0 in reply to Balabhaskar V G
    TI__Genius 13290 points

    Hi,

    Thanks for answering all my questions.

    1st are devices are not intended to be treated like this, batteries should only occasionally be disconnected to ensure optimal accuracy.

    2nd the first ocv reading after a battery is connected or reconnected is invalid, this is the reason for your soc jump.

    Thanks,

    Evan