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TI Home » TI E2E Community » Support Forums » Power Management » Battery Management » Battery Management - Gas Gauge Forum » bq20z45 Qmax overflow
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bq20z45 Qmax overflow

bq20z45 Qmax overflow

This question is answered
Kevin Chao
Posted by Kevin Chao
on Oct 27 2010 22:00 PM
Prodigy40 points

Hi all

I use bq20z45 and battery capacity is 25200mAh. (3S9P, pre cell 2800mAh)

When used 54 cycle Qmax cell 1 from 26500mAh change to -31444 mAh. use EV2300 read data flash.

Then FCC change to 56289mAh. (Read SBS)

I don't know why, Please help me.

Thanks.

 

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  • Jackie Hui
    Posted by Jackie Hui
    on Nov 01 2010 10:47 AM
    Expert3855 points

    The capacity limit for z45 is 32Ah, so this is not a simply overflow problem. 

    We will need to have more information:

    1. What is the FW version?

    2. Can you provide a log file?

    3. Can you provide a gg file?

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  • Kevin Chao
    Posted by Kevin Chao
    on Mar 10 2011 23:21 PM
    Verified Answer
    Verified by Kevin Chao
    Prodigy40 points

    The capacity limit for z45 is 32Ah, so this is not a simply overflow problem. 

    We will need to have more information:

    1. What is the FW version?

    bq20z45 V1.04

    2. Can you provide a log file?

    This is probrem happen at customer, I receive sample and read out data.

     I don't have log file, give you gg file and senc file.

    3. Can you provide a gg file?

    6431.GG_SENC.rar

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  • Suren zhou
    Posted by Suren zhou
    on May 11 2012 04:48 AM
    Intellectual275 points

    Hi Kevin,

     

    I don't find the final answer from above forums.

    Could you please share the root cause to us?

     

    Suren

    Thanks & regards,

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