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BQ20ZXX: "Discharge battery and reset password to default"

PostPosted: Thu May 24, 2018 8:14 pm
by jesterace
I have replaced the cells in my battery pack for a fujitsu laptop. I am using the USB SMBUS interface and can read the battery OK. The results are below. The problem is that i cannot calibrate/reset the battery because the "RemainingCapacity" is 4mah and it says i need to reset the password because it is sealed. I cannot drain the battery because the laptop won't charge/discharge it. What can i do?

DesignCapacity: 5000 mAh
FullChargeCapacity: 2716 mAh
CycleCount: 512
Date: 2013.01.28
DesignVoltage: 11100 mV
ManufName: PG01RQ3335
DeviceName: CP569291
SerialNumber: 063F
ChargingCurrent: 0 mA
ChargingVoltage: 0 mV
DeviceChemistry: LCG0
Temperature: 25.9 C
Voltage: 10515 mV
Current: 0 mA
RelativeSOC: 1%
AbsoluteSOC: 1%
RemainingCapacity: 4 mAh
VCELL4: 0000 mV
VCELL3: 3495 mV
VCELL2: 3510 mV
VCELL1: 3511 mV
SpecificationInfo: 0031 Hex
Battery Status:


Re: BQ20ZXX: "Discharge battery and reset password to defaul

PostPosted: Mon Jun 04, 2018 3:20 am
by admin
Did you open the battery?