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Aging Factor
bq2084-V143
SLUS732 – SEPTEMBER 2006
Table 3. bq2084-V143 Register Functions
FUNCTION COMMAND CODE ACCESS UNITS
ManufacturerAccess 0x00 Read/write NA
RemainingCapacityAlarm 0x01 Read/write mAh, 10 mWh
RemainingTimeAlarm 0x02 Read/write minutes
BatteryMode 0x03 Read/write NA
AtRate 0x04 Read/write mA, 10 mW
AtRateTimeToFull 0x05 Read minutes
AtRateTimeToEmpty 0x06 Read minutes
AtRateOK 0x07 Read Boolean
Temperature 0x08 Read 0.1 ° K
Voltage 0x09 Read mV
Current 0x0a Read mA
AverageCurrent 0x0b Read mA
MaxError 0x0c Read percent
RelativeStateOfCharge 0x0d Read percent
AbsoluteStateOfCharge 0x0e Read percent
RemainingCapacity 0x0f Read mAh, 10 mWh
FullChargeCapacity 0x10 Read mAh, 10 mWh
RunTimeToEmpty 0x11 Read minutes
AverageTimeToEmpty 0x12 Read minutes
AverageTimeToFull 0x13 Read minutes
ChargingCurrent 0x14 Read mA
ChargingVoltage 0x15 Read mV
Battery Status 0x16 Read NA
CycleCount 0x17 Read cycles
DesignCapacity 0x18 Read mAh, 10 mWh
DesignVoltage 0x19 Read mV
SpecificationInfo 0x1a Read NA
ManufactureDate 0x1b Read NA
SerialNumber 0x1c Read integer
Reserved 0x1d-0x1f 0 0
ManufacturerName 0x20 Read string
DeviceName 0x21 Read string
DeviceChemistry 0x22 Read string
ManufacturerData 0x23 Read string
Pack status 0x2f (LSB) Read NA
Pack configuration 0x2f (MSB) Read NA
VCELL4 0x3c Read mV
VCELL3 0x3d Read mV
VCELL2 0x3e Read mV
VCELL1 0x3f Read mV
VPACK 0x45 Read mV
AFEData 0x46 Read hex
The bq2084-V143 adds a new aging factor called DF: Age Factor which scales cell impedances as the cycle
count increases. This new factor is used to accommodate for much higher impedances observed in larger
capacity and/or aged cells. For most applications the default value of zero is sufficient. However, for some very
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