TI E2E Community
Battery Management - Gas Gauge Forum
bq20z45 Qmax overflow
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.
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?
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.
I don't find the final answer from above forums.
Could you please share the root cause to us?
Thanks & regards,
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.