Unknown battery: HP BP02XL battery on HP Pavilion - 15-au101tx

[Hairan]

I recently replaced my old battery with a similar HP BP02XL battery on my HP Pavilion - 15-au101tx . The battery is charging and discharging normally as per the icon in the system tray. However, the HP support assistant shows Unknown Battery, and the battery check result is "Discharging (76%). Primary Battery: No Battery. A battery was not detected. If a battery is installed, please re-insert the battery and AC adapter to retest the battery. I've tried 3 new batteries, tested while charging and discharging, run the UEFI power diagnostic, but all with the same result. Help!

Product number: X9K23PA#AB4

Win10 (Version 21H1 for x64-based Systems)

HP support assistant Version: 9.7.433.0

[banhien]

@Hairan 

The specs of your machine is

      https://support.hp.com/sg-en/document/c05272359

It uses  2-cell, 41 Wh Li-ion battery part # 849909-855. Are you sure you bought a RIGHT battery for your machine ?

Regards.

[Hairan]

The HP part number printed on the battery is 849569-541, and this is identical to the original battery that was replaced. The battery is 2-cell, 41 Wh Li-ion battery.

[Hairan]

Update with additional information:

1. HP PC Hardware Diagnostics Windows (v.1.6.4.0) result shows "Passed" with the following details:

CeementBatteryCheckResult: 11

DevicesSupported: 1

DeviceCount: 1

Primary_ACPowerOn: False

Primary_ACAdapterOk: True

ACAdapterStatus: False

Primary_TestresultString: OK_NO_AC

Primary_DesignCapacity: 4400mAh

Primary_FullChargeCapacity: 4320mAh

Primary_RemainingCapacity: 3620mAh

Primary_MaxError: 1

Primary_CycleCount: 4

Primary_Temperature: 25deg C

Primary_Voltage: 8047mV

Primary_Current: 64681mA

Primary_DesignVoltage: 7700mV

Primary_Status: 192

Primary_CellVoltage1: 4023mV

Primary_CellVoltage2: 4024mV

Primary_CellVoltage3: 0mV

Primary_CellVoltage4: 0mV

Primary_SerialNumber: 00337 03/18/2020

Primary_ManufacturerName: 313-54-31

Primary_BatteryCTNumber: N/A

Primary_Warranty: 3

Primary_CalibrationType: 1

Primary_ChargeControl: NotSupported

Primary_TempCharge: True

Primary_ChargeTest: False

Primary_ChargeCapacity: 98

Primary_TempAlarm: False

Primary_DeepDischarge: False

Primary_FullCharge: False

Primary_FullChargeStatus: False

Primary_BatteryCharge: True

Primary_DesignCycleCount: 1000

2. HP Support Assistant (Version: 9.7.536.0) continues to show "Battery: Unknown". I have uninstalled and reinstalled HPSA with the same result.

Could there be a bug in the HPSA software?