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BQ40Z80EVM-020: BQ40Z80EVM-020: Trouble with finish learning cycle, 'Update Status" field doesn`t change. QEN/VOR/RDIS registers don`t set at same time.

Part Number: BQ40Z80EVM-020
Other Parts Discussed in Thread: EV2400, GPCCHEM


  • BQ40Z80EVM-020
  • Rechargeable Lithium Ion Battery Model : INR18650HJ2 (4 units)
  • laboratory power supply

Jumpers position:

J3 J4 J5 J6 J7 J8 J9 J10 J13 J14 J15 J16 J17 J18 J20 J21 J22
None None PIN12_PRES PIN15_VC7EN PIN12_VC7SNS None None PIN16_CB7EN None PIN13_LED PIN20_LED PIN22_LED PIN21_LED EV2400_SMBD1 PIN12_onward PIN13_onward EV2400_SMBC1

Tried to achieve a successful learning cycle using the following official guide:

After completing the guide re-action and even additional cycles, the "Update Status" field in memory is still 0x04, but the guide should be 0x05 and then 0x06.

List of parameters changed before the start of the learning cycle:

Parameter name Value
Enabled Protections D 0x0F
DA Configuration 0x10
Cell Configuration 0x04
Protections/COV 3900
Charge Term Taper Current 50
Design Capacity (mAh) 3000
Design Capacity (cWh) 4320
Voltage Threshold 2500-2600
Qmax 3000
Term Voltage 10000

Learning full cycle log

Chemical id was taken from GPCCHEM

Last thread

Why doesn't "Update Status" change its value? How to fix it? Are there any other ways to ensure a successful learning cycle?