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BQ27Z561-R2: Battery Chem ID conformation

Part Number: BQ27Z561-R2
Other Parts Discussed in Thread: GPCCHEM

Here is the revised version to share on TI forum: We are using bq27z53f Fuel gauge sensor for monitoring the charge status of 260mAh, 3700mV battery. Load for this battery includes the board circuit load and a heater load. We are using the BMS Version and the dev kit model : for the fuel gauge calibration. The maximum discharge expected when the heater is active is 2500mA. In this configuration, (say max current of 2500 mA), we are unable to enter the Fuel gauge configuration. During calibration steps, we are getting the correct battery voltage but not the correct discharge current. We observed some default values and some invalid values. Due to this issue, we don't the correct remaining capacity. The configuration data we used is listed below and request your help in identifying the correct configuration data. Referred the battery data sheet and used the same in the fuel gauge configuration CSV File.

Sample data points used and require your help are given below:

Our battery specifications are (420mAh, 3.70V, Li-ion polymer). The chemical ID received from TI (1258) battery has the following specifications: (4100mAh, LiCoO2). Because the mAh and kind of battery do not match, how can I check the learning cycle.

  • Hi Rajesh,

    Can you please tell me more about how you received this chemID? Did you use the GPCCHEM tool?

    If you did use the GPCCHEM tool, can you please send the .zip file you inserted and the report file you recieved?


    Anthony Baldino