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bq40z60 - Not charging - what is wrong?

Hi,

I am using the bq40z60EVM and bqStudio to get an initial working configuration but it refuses to charge.

I set the NR flag as the battery is not removable and also the number of cells to 2.
I also use Precharge and configured it accordingly.
Charging Voltages and currents have been also set if I did not miss anything.

I am using 2 IMR cells with the following specs:

Max charge Voltage 4200mV +/-50mV
Nominal Voltage 3700mV
Typical capacity 1100mAh
Impedance 15mR
Min discharge voltage 3000mV
Typ charging current 1100mA (8 hours)
Max discharging current 22A
Charging temp 0 to 45 degC
Discharging Temp -20 to 60 degC

I would be happy if someone could help me with setting the design up so it initially works.

I do not have a chemistry ID for these cells which I would need to determine afterwards as well.

I have attached the exported .gg file with my current settings.


Thanks,
Fred

(Please visit the site to view this file)


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