SPMU383
April 2026
BQ27Z846
1
Read This First
About This Manual
Notational Conventions
Battery Notational Conventions
Trademarks
Glossary
1
IO Options
1.1
Configuration of the INT Pin
2
Basic Measurement System
2.1
Introduction
2.2
Current and Coulomb Counting
2.3
Voltage
2.3.1
Cell Voltage
2.3.2
Pack Voltage
2.4
Temperature
2.4.1
Internal Temperature
2.4.2
Cell Temperature
2.4.3
Temperature Configuration
3
Protections
3.1
Introduction
3.2
Cell Undervoltage Protection
3.3
Cell Undervoltage Compensated Protection
3.4
Cell Overvoltage Protection
3.5
Overcurrent in Charge Protection
3.6
Overcurrent in Discharge Protection
3.7
Hardware-Based Protection
3.7.1
Analog Over Current Charge Protection (AOCC)
3.7.2
Analog Over Current Discharge Protection (AOCD)
3.7.3
Short Circuit in Discharge Protection
3.7.4
ACUV (Cell Under Voltage)
3.7.5
ACOV (Cell Over Voltage)
3.8
Temperature Protections
3.8.1
Overtemperature in Charge Protection
3.8.2
Overtemperature in Discharge Protection
3.8.3
Overtemperature FET Protection
3.8.4
Undertemperature in Charge Protection
3.8.5
Undertemperature in Discharge Protection
3.9
Host Watchdog Protection
3.10
Precharge Timeout Protection
3.11
Fast Charge Timeout Protection
3.12
Overcharge Protection
3.13
OverCharging Voltage Protection
3.14
OverCharging Current Protection
3.15
OverPrecharging Current Protection
4
Integrated Short-Circuit Indication (ISI)
4.1
Introduction
4.2
Configuration
4.2.1
Self-Discharge Current
4.2.2
Low Internal Short Threshold
4.2.3
High Internal Short Threshold
4.2.4
Threshold Passes to Completion
4.2.5
Manufacturing Completion Timeout
4.3
ISI Configuration Parameters
4.3.1
ISI Configuration
5
Permanent Fail
5.1
Introduction
5.1.1
Black Box Recorder
5.2
Safety Cell Undervoltage Permanent Fail
5.2.1
SUV Check Option
5.3
Safety Cell Overvoltage Permanent Fail
5.4
Safety Overcurrent in Charge Permanent Fail
5.5
Safety Overcurrent in Discharge Permanent Fail
5.6
Safety Overtemperature Cell Permanent Fail
5.7
Safety Overtemperature FET Permanent Fail
5.8
Capacity Degradation Permanent Fail
5.9
Charge FET Permanent Fail
5.10
Discharge FET Permanent Fail
5.11
Battery Swelling Detection Permanent Fail
5.12
Data Flash (DF) Permanent Fail
5.13
Cell Overvoltage Latch Permanent Failure
5.14
Manual Permanent Failure
5.15
Permanent Fail ISI
5.16
Internal Short-Circuit Indication Low Permanent Fail
5.17
Internal Short-Circuit Indication High Permanent Fail
6
Power Modes
6.1
NORMAL Mode
6.1.1
System Present Detection Configuration
6.1.1.1
System Present
6.1.1.2
Battery Pack Removed
6.2
SLEEP Mode
6.2.1
Device Sleep
6.2.2
IN SYSTEM SLEEP Mode
6.2.3
ManufacturerAccess() MAC Sleep
6.2.4
Current Wake Function
6.3
SHIP Mode
6.4
SHUTDOWN Mode
6.4.1
VOLTAGE BASED SHUTDOWN
6.4.2
ManufacturerAccess() MAC Shutdown
6.4.3
Time-Based Shutdown
6.4.4
Low RSOC Time-Based Shutdown
6.4.5
Power Save Shutdown
6.4.6
IO Based Shutdown
6.5
Startup ENAB Hold Time
6.6
Option to Manage Unintended Wakeup from Shutdown
6.7
Emergency FET Shutdown (EMSHUT)
6.7.1
Enter Emergency FET Shutdown Through SHUTDN
6.7.2
Enter Emergency FET Shutdown Through MFC
6.7.3
Exit Emergency FET Shutdown
6.8
STORAGE Mode
6.9
System Disconnect
7
Gauging
7.1
Introduction
7.2
Dynamic Z-Track Configuration
7.3
Gas Gauge Modes
7.4
QMax and Ra
7.4.1
QMax Initial Values
7.4.2
QMax Update Conditions
7.4.3
OCV Prediction
7.4.4
Fast Qmax Update Conditions
7.4.5
QMax and Fast Qmax Update Boundary Check
7.4.6
Ra Table Initial Values
7.4.7
Ra Table Update Conditions
7.4.8
Application of Resistance Scaling
7.5
FullChargeCapacity(FCC), RemainingCapacity(RemCap), and RelativeStateOfCharge(RSOC)
7.6
Dynamic Z-Track Configuration Options
7.7
State of Health (SOH)
7.8
RSOC Rounding Option
7.9
RSOC 1% Hold
7.10
Accumulated Charge Measurement
8
Gauging for Silicon Anode Battery
8.1
Introduction
8.2
Capacity Loss And OCV Drift
8.3
Silicon Anode Battery Gauging
8.4
Silicon Anode Gauging Parameters
8.5
Design Qmax
8.6
ManufacturerAccess() 0x0040 SiAnode Status
8.7
ZT SiAnode Gauging Configuration
9
Lifetime Data Collection
9.1
Description
9.2
Reset
10
Host Interrupts
10.1
Description
10.2
Host Interrupts Configuration
11
Device Security
11.1
Description
11.2
SHA-256 Authentication
11.2.1
Authentication Flow
11.3
Security Modes
11.3.1
SEALING and UNSEALING Data Flash
11.3.2
SEALED to UNSEALED
11.3.3
UNSEALED to FULL ACCESS
12
Advanced Charge Algorithm
12.1
Introduction
12.2
Charge Temperature Ranges
12.3
Voltage Range
12.3.1
Voltage or RelativeStateofCharge() Range
12.4
Charging Current
12.5
Charging Voltage
12.6
Valid Charge Termination
12.7
Charge and Discharge Termination Flags
12.8
Terminate Charge and Discharge Alarms
12.9
Zero Volt Charging (ZVCHG)
12.10
Precharge
12.11
Maintenance Charge
12.12
Charge Disabled
12.13
Charge Inhibit
12.14
Charge Suspend
12.15
ChargingVoltage() Rate of Change
12.16
ChargingCurrent() Rate of Change
12.17
Charging Loss Compensation
12.18
Cycle Count/SOH Based Degradation of Charging Voltage and Current
12.18.1
Degradation Modes
12.18.1.1
Cycle Count Based Degradation
12.18.1.2
SOH Based Degradation
12.18.1.3
Runtime Based Degradation
12.18.2
Degradation Process
12.18.2.1
Charging Voltage Degradation Process
12.18.2.2
Charging Current Degradation Process
12.19
Elevated Charge Degradation
12.20
Elevated Voltage Extended Charge Degradation
12.21
Charge Voltage Compensation for System Impedance
12.22
Cell Swelling Control (via Charging Voltage Degradation)
13
Communications
13.1
I2C Interface
13.1.1
I2C Clock Frequency
13.1.2
I2C Time Out
13.1.3
I2C Command Waiting Time
13.1.4
I2C Clock Stretching
14
Calibration
14.1
Voltage Calibration
14.1.1
Cell (BAT) Voltage Calibration
14.1.2
Pack (PACK) Voltage Calibration
14.1.3
Voltage Calibration Data Flash
14.2
Current Calibration
14.2.1
CC Gain/Capacity Gain Calibration
14.2.2
Deadbands
14.2.2.1
Current Deadband
14.2.2.2
Coulomb Counter Deadband
14.2.3
Current Calibration Data Flash
14.3
Temperature Calibration
14.3.1
TS Calibration
14.3.2
Temperature Calibration Data Flash
14.3.3
Cell Temp Model
14.3.4
Internal Temp Model
15
Data Commands
15.1
Standard Data Commands
15.1.1
0x00/01 ManufacturerAccess()/ControlStatus()
15.1.2
0x02/03 AtRate()
15.1.3
0x04/05 AtRateTimeToEmpty()
15.1.4
0x06/07 Temperature()
15.1.5
0x08/09 Voltage()
15.1.6
0x0A/0B BatteryStatus()
15.1.7
0x0C/0D Current()
15.1.8
0x10/11 RemainingCapacity()
15.1.9
0x12/13 FullChargeCapacity()
15.1.10
0x14/15 AverageCurrent()
15.1.11
0x16/17 AverageTimeToEmpty()
15.1.12
0x18/19 AverageTimeToFull()
15.1.13
0x20/21 MaxLoadTimeToEmpty()
15.1.14
0x22/23 AveragePower()
15.1.15
0x28/29 InternalTemperature()
15.1.16
0x2A/2B CycleCount()
15.1.17
0x2C/2D RelativeStateOfCharge()—RSOC
15.1.18
0x2E/2F StateOfHealth()
15.1.19
0x30/31 ChargingVoltage()
15.1.20
0x32/33 ChargingCurrent()
15.1.21
0x34/35 TerminateVoltage()
15.1.22
0x36/0x37/0x38/0x39 Timestamp()
15.1.23
QMax Cycles() 0x3A/3B
15.1.24
0x3C/3D DesignCapacity()
15.1.25
0x3E/3F AltManufacturerAccess()
15.1.26
0x40/0x5F MACData()
15.1.27
0x60 MACDataChecksum()
15.1.28
0x61 MACDataLength()
15.2
0x00, 0x01 ManufacturerAccess() and 0x3E, 0x3F AltManufacturerAccess()
15.2.1
ManufacturerAccess() 0x0000
15.2.2
ManufacturerAccess() 0x0001 Device Type
15.2.3
ManufacturerAccess() 0x0002 Firmware Version
15.2.4
ManufacturerAccess() 0x0003 Hardware Version
15.2.5
ManufacturerAccess() 0x0004 Instruction Flash Signature
15.2.6
ManufacturerAccess() 0x0005 Static DF Signature
15.2.7
ManufacturerAccess() 0x0006 Chemical ID
15.2.8
ManufacturerAccess() 0x0008 Static Chem DF Signature
15.2.9
ManufacturerAccess() 0x0009 All DF Signature
15.2.10
ManufacturerAccess() 0x000A STORAGE Mode
15.2.11
ManufacturerAccess() 0x0010 SHUTDOWN Mode
15.2.12
ManufacturerAccess() 0x0011 SLEEP Mode
15.2.13
ManufacturerAccess() 0x001F CHG FET Toggle
15.2.14
ManufacturerAccess() 0x0020 DSG FET Toggle
15.2.15
ManufacturerAccess() 0x0021 Gauging
15.2.16
ManufacturerAccess() 0x0022 FET Control
15.2.17
ManufacturerAccess() 0x0023 Lifetime Data Collection
15.2.18
ManufacturerAccess() 0x0024 Permanent Failure
15.2.19
ManufacturerAccess() 0x0025 Black Box Recorder
15.2.20
ManufacturerAccess() 0x0028 Lifetime Data Reset
15.2.21
ManufacturerAccess() 0x0029 Permanent Fail Data Reset
15.2.22
ManufacturerAccess() 0x002A Black Box Recorder Reset
15.2.23
ManufacturerAccess() 0x002D CALIBRATION Mode
15.2.24
ManufacturerAccess() 0x002E Lifetime Data Flush
15.2.25
ManufacturerAccess() 0x002F Lifetime Data SPEED UP Mode
15.2.26
ManufacturerAccess() 0x0030 Seal Device
15.2.27
ManufacturerAccess() 0x0035 Security Keys
15.2.28
ManufacturerAccess() 0x0037 Authentication Key
15.2.29
ManufacturerAccess() 0x0041 Device Reset
15.2.30
ManufacturerAccess() 0x0050 SafetyAlert
15.2.31
ManufacturerAccess() 0x0051 SafetyStatus
15.2.32
ManufacturerAccess() 0x0052 PFAlert
15.2.33
ManufacturerAccess() 0x0053 PFStatus
15.2.34
ManufacturerAccess() 0x0054 OperationStatus
15.2.35
ManufacturerAccess() 0x0055 ChargingStatus
15.2.36
ManufacturerAccess() 0x0056 GaugingStatus
15.2.37
ManufacturerAccess() 0x0057 ManufacturingStatus
15.2.38
ManufacturerAccess() 0x0058 AFE Register
15.2.39
ManufacturerAccess() 0x005C VCT Voltage
15.2.40
ManufacturerAccess() 0x005E ChargingStatusExt
15.2.41
ManufacturerAccess() 0x0060 Lifetime Data Block 1
15.2.42
ManufacturerAccess() 0x0061 Lifetime Data Block 2
15.2.43
ManufacturerAccess() 0x0062 Lifetime Data Block 3
15.2.44
ManufacturerAccess() 0x0063 Lifetime Data Block 4
15.2.45
ManufacturerAccess() 0x0064 Lifetime Data Block 5
15.2.46
ManufacturerAccess() 0x0065 Lifetime Data Block 6
15.2.47
ManufacturerAccess() 0x0066 Lifetime Data Block 7
15.2.48
ManufacturerAccess() 0x0067 Lifetime Data Block 8
15.2.49
ManufacturerAccess() 0x0068 Lifetime Data Block 9
15.2.50
ManufacturerAccess() 0x0069 Lifetime Data Block 10
15.2.51
ManufacturerAccess() 0x006A Lifetime Data Block 11
15.2.52
ManufacturerAccess() 0x006B Lifetime Data Block 12
15.2.53
ManufacturerAccess() 0x006C Lifetime Data Block 13
15.2.54
ManufacturerAccess() 0x006D Lifetime Data Block 14
15.2.55
ManufacturerAccess() 0x006E Lifetime Data Block 15
15.2.56
ManufacturerAccess() 0x006F Power Events
15.2.57
ManufacturerAccess() 0x0070 ManufacturerInfo
15.2.58
ManufacturerAccess() 0x0071 DAStatus1
15.2.59
ManufacturerAccess() 0x0072 DAStatus2
15.2.60
ManufacturerAccess() 0x0073 GaugeStatus1
15.2.61
ManufacturerAccess() 0x0074 GaugeStatus2
15.2.62
ManufacturerAccess() 0x0075 GaugeStatus3
15.2.63
ManufacturerAccess() 0x0076 CBStatus
15.2.64
ManufacturerAccess() 0x0077 StateofHealth
15.2.65
ManufacturerAccess() 0x0078 FilterCapacity
15.2.66
ManufacturerAccess() 0x0079 RSOCWrite
15.2.67
ManufacturerAccess() 0x007A ManufacturerInfoB
15.2.68
ManufacturerAccess() 0x007B ManufacturerInfoC
15.2.69
ManufacturerAccess() 0x007E Lifetime Data Block 16
15.2.70
ManufacturerAccess() 0x0098 AccumulationChargeEnable
15.2.71
ManufacturerAccess() 0x0099 AccumulationDischargeEnable
15.2.72
ManufacturerAccess() 0x009A AccumulationReset
15.2.73
ManufacturerAccess() 0x009B AccumulationStop
15.2.74
ManufacturerAccess() 0x009C AccumulationStart
15.2.75
ManufacturerAccess() 0x009D AccumulationChargeThreshold
15.2.76
ManufacturerAccess() 0x009E AccumulationDischargeThreshold
15.2.77
ManufacturerAccess() 0x009F AccumulatedChargeTime
15.2.78
ManufacturerAccess() 0x00B0 ChargingVoltageOverride
15.2.79
ManufacturerAccess() 0x00B2 ChargingCurrentOverride
15.2.80
ManufacturerAccess() 0x00B4 RTC Access
15.2.81
ManufacturerAccess() 0x00B5 ChargerStatus
15.2.82
ManufacturerAccess() 0x00D2 ISI Current State
15.2.83
ManufacturerAccess() 0x00F0 IATAShutdown
15.2.84
ManufacturerAccess() 0x00F1 IATARm
15.2.85
ManufacturerAccess() 0x00F2 IATAFcc
15.2.86
ManufacturerAccess() 0x0F00 ROM Mode
15.2.87
ManufacturerAccess() 0x3008 WriteTemp
15.2.88
ManufacturerAccess() 0x4000–0x5FFF DataFlashAccess
15.2.89
ManufacturerAccess() 0xF080 and 0xF081 Output CCADCCal Control
15.2.90
ManufacturerAccess() 0xF082 OutputShortedCCADCCal
16
Data Flash Values
16.1
Settings
16.1.1
Configuration
16.1.1.1
Charging Configuration
16.1.1.2
Charging Configuration Ext
16.1.1.3
FET Options
16.1.1.4
SBS Gauging Configuration
16.1.1.5
SBS Configuration
16.1.1.6
Auth Config
16.1.1.7
Power Config
16.1.1.8
IO Config
16.1.1.9
Temperature Enable
16.1.1.10
Temperature Mode
16.1.1.11
DA Configuration
16.1.1.12
SOC Flag Config A
16.1.1.13
SOC Flag Config B
16.1.1.14
IT Gauging Configuration
16.1.1.15
IT Gauging Ext
16.1.1.16
Elevated Degrade Configuration
16.1.1.17
DZT Gauging Configuration
16.1.2
Flag Map
16.1.2.1
Set Up 1 Configuration
16.1.2.2
Set Up 1 Pin Number
16.1.2.3
Set Up 2 Configuration
16.1.2.4
Set Up 2 Pin Number
16.1.2.5
Set Up 3 Configuration
16.1.2.6
Set Up 3 Pin Number
16.1.2.7
Set Up 4 Configuration
16.1.2.8
Set Up 4 Pin Number
16.1.3
GPIO
16.1.3.1
Pres Pin Number
16.1.3.2
Disconnect Pin Number
16.1.3.3
Emergency Shutdown Pin Number
16.1.3.4
IO Shutdown Pin Number
16.1.3.5
BTP Pin Number
16.1.3.6
BTP Pin Configuration
16.1.3.7
GPIO_PF Pin Number
16.1.3.8
GPIO_INT Enable
16.1.3.9
GPIO_INT Output Enable
16.1.3.10
GPIO_INT Default Out
16.1.3.11
Sealed Access Config
16.1.4
BTP
16.1.4.1
Init Discharge Set
16.1.4.2
Init Charge Set
16.1.4.3
Init Charge SOC Set
16.1.4.4
Init Discharge SOC Set
16.1.5
Sealed Access
16.1.5.1
DF Only Read Timeout
16.1.5.2
MfgInfoC Write Timeout
16.1.6
Lifetimes
16.1.6.1
Lifetimes Configuration
16.1.6.2
Time RSOC Thresholds
16.1.6.3
Temperature Hold-off Time
16.1.6.4
Time Temperature Limits
16.1.7
Protection
16.1.7.1
Protection Configuration
16.1.7.2
Enabled Protections A
16.1.7.3
Enabled Protections B
16.1.7.4
Enabled Protections C
16.1.7.5
Enabled Protections D
16.1.8
Permanent Failure
16.1.8.1
Enabled PF A
16.1.8.2
Enabled PF B
16.1.8.3
Enabled PF C
16.1.8.4
Enabled PF D
16.1.9
AFE
16.1.9.1
OCC
16.1.9.2
OCD
16.1.9.3
Short Circuit Discharge
16.1.9.4
Under Voltage
16.1.9.5
Over Voltage
16.1.9.6
Current Charge Wake
16.1.9.7
Current Discharge Wake
16.1.9.8
OCC Delay
16.1.9.9
OCD Delay
16.1.9.10
Short Circuit Discharge Delay
16.1.9.11
Under Voltage Delay
16.1.9.12
Over Voltage Delay
16.1.9.13
Over Voltage Delay Hi
16.1.9.14
CD Wake Delay
16.1.9.15
CC Wake Delay
16.1.9.16
ZVCHG Exit Threshold
16.1.10
Smart Temperature
16.1.10.1
Mid Point Temp
16.1.11
Manufacturing
16.1.11.1
Manufacturing Status Init
16.1.12
Accumulated Charge Measurement
16.1.12.1
Accum Discharge Threshold
16.1.12.2
Accum Charge Threshold
16.2
Advanced Charging Algorithm
16.2.1
Minimum System Voltage
16.2.2
CHGR_DET Off Voltage
16.2.3
CHGR_DET On Voltage
16.2.4
Temperature Ranges
16.2.4.1
T1 Temp
16.2.4.2
Hysteresis Temp T1
16.2.4.3
T2 Temp
16.2.4.4
Hysteresis Temp T2
16.2.4.5
T5 Temp
16.2.4.6
Hysteresis Temp T5
16.2.4.7
T6 Temp
16.2.4.8
Hysteresis Temp T6
16.2.4.9
T3 Temp
16.2.4.10
Hysteresis Temp T3
16.2.4.11
T4 Temp
16.2.4.12
Hysteresis Temp T4
16.2.5
PreCharging
16.2.6
Maintenance Charging
16.2.7
Voltage Range
16.2.7.1
Precharge Start Voltage
16.2.7.2
Charging Voltage Low
16.2.7.3
Charging Voltage Med
16.2.7.4
Charging Voltage High
16.2.7.5
Charging Voltage Hysteresis
16.2.8
Degrade Mode 1
16.2.8.1
Cycle Threshold
16.2.8.2
SOH Threshold
16.2.8.3
Runtime Threshold
16.2.8.4
Voltage Degradation
16.2.8.5
Current Degradation
16.2.9
Degrade Mode 2
16.2.9.1
Cycle Threshold
16.2.9.2
SOH Threshold
16.2.9.3
Runtime Threshold
16.2.9.4
Voltage Degradation
16.2.9.5
Current Degradation
16.2.10
Degrade Mode 3
16.2.10.1
Cycle Threshold
16.2.10.2
SOH Threshold
16.2.10.3
Runtime Threshold
16.2.10.4
Voltage Degradation
16.2.10.5
Current Degradation
16.2.11
Degrade Mode
16.2.11.1
Runtime Degrade
16.2.11.2
Runtime Update Interval
16.2.11.3
Cycle Count Start Runtime
16.2.12
CS Degrade
16.2.12.1
Temperature Threshold
16.2.12.2
Voltage Threshold
16.2.12.3
Time Interval
16.2.12.4
Delta Voltage
16.2.12.5
Min CV
16.2.13
Charge Voltage Override
16.2.13.1
CHGV Override Max
16.2.13.2
CHGV Override Min
16.2.14
Charge Current Override
16.2.14.1
CHGI Override Max
16.2.14.2
CHGI Override Min
16.2.15
Termination Config
16.2.15.1
Charge Term Taper Current
16.2.15.2
Charge Term Voltage Offset
16.2.15.3
Charge Term Charging Voltage
16.2.16
Charging Rate of Change
16.2.16.1
Current Rate
16.2.16.2
Voltage Rate
16.2.17
Charge Loss Compensation
16.2.17.1
CCC Current Threshold
16.2.17.2
CCC Voltage Threshold
16.2.18
IR Correction
16.2.18.1
Averaging Interval
16.2.19
Sealed Write
16.2.19.1
Hold Off
16.2.19.2
Lockout
16.2.20
Low Temp Charging
16.2.20.1
Voltage
16.2.20.2
Current Low
16.2.20.3
Current Med
16.2.20.4
Current High
16.2.21
Standard Temp Low Charging
16.2.21.1
Voltage
16.2.21.2
Current Low
16.2.21.3
Current Med
16.2.21.4
Current High
16.2.22
Standard Temp High Charging
16.2.22.1
Voltage
16.2.22.2
Current Low
16.2.22.3
Current Med
16.2.22.4
Current High
16.2.23
High Temp Charging
16.2.23.1
Voltage
16.2.23.2
Current Low
16.2.23.3
Current Med
16.2.23.4
Current High
16.2.24
Rec Temp Charging
16.2.24.1
Voltage
16.2.24.2
Current Low
16.2.24.3
Current Med
16.2.24.4
Current High
16.2.25
Elevated Degrade
16.2.25.1
Accumulated ERM Time
16.2.25.2
Accumulated ERETM Time
16.2.25.3
Accumulated EVLTM Time
16.2.25.4
Accumulated EVMTM Time
16.2.25.5
Accumulated EVHTM Time
16.2.25.6
ERETM Status
16.2.25.7
EVTM Degrade
16.2.25.8
EVTM Active
16.2.25.9
ERM Reset RSoC Threshold
16.2.25.10
ERM Reset Voltage Threshold
16.2.25.11
ERM RSoC Threshold
16.2.25.12
ERM Voltage Threshold
16.2.25.13
ERM Time Threshold
16.2.25.14
ERETM RSoC Threshold
16.2.25.15
ERETM Voltage Threshold
16.2.25.16
ERETM Temperature Threshold
16.2.25.17
ERETM Time Threshold
16.2.25.18
ERETM Charging Voltage
16.2.25.19
EVTM Voltage Thresholds
16.2.25.20
EVTM Temperature Thresholds
16.2.25.21
EVLTM Time Thresholds
16.2.25.22
EVLTM Delta Charging Voltages
16.2.25.23
EVMTM Time Thresholds
16.2.25.24
EVMTM Delta Charging Voltages
16.2.25.25
EVHTM Time Thresholds
16.2.25.26
EVHTM Delta Charging Voltages
16.3
Power
16.3.1
Power
16.3.2
Shutdown
16.3.2.1
Shutdown Voltage
16.3.2.2
Shutdown Time
16.3.2.3
IO Shutdown Delay
16.3.2.4
IO Shutdown Timeout
16.3.2.5
Low RSoC Shutdown Threshold
16.3.2.6
Low RSoC Shutdown Time
16.3.2.7
Charger Present Threshold
16.3.3
Sleep
16.3.3.1
Sleep Current
16.3.3.2
Low Current
16.3.3.3
Low Current Period
16.3.3.4
Measure Time
16.3.3.5
Bus Timeout
16.3.3.6
Current Time
16.3.4
Ship
16.3.4.1
FET Off Time
16.3.4.2
Delay
16.3.4.3
Auto Ship Time
16.3.5
Power Off
16.3.6
Manual FET Control
16.3.7
System Present
16.3.7.1
SysPres Delay
16.3.8
Storage
16.3.8.1
Storage Delay
16.3.8.2
Storage Ignore SMB Delay
16.3.9
Power Events
16.3.9.1
Power Events
16.3.10
IATA
16.3.10.1
IATA Config
16.3.10.2
IATA Delay Time
16.3.10.3
IATA RSOC Threshold
16.3.10.4
IATA Wake AbsRSOC
16.3.10.5
IATA MIN Temperature
16.3.10.6
IATA MAX Temperature
16.3.10.7
IATA MIN Voltage
16.3.10.8
IATA MAX Voltage
16.3.11
IATA STORE
16.3.11.1
IATA RM mAH
16.3.11.2
IATA RM cWH
16.3.11.3
IATA FCC mAH
16.3.11.4
IATA FCC cWH
16.3.11.5
IATA Flag
16.3.12
Unintended Wakeup
16.3.12.1
Delay
16.3.12.2
Count
16.4
System Data
16.4.1
Manufacturer Info
16.4.2
Manufacturer Info B
16.4.3
Manufacturer Info C
16.4.4
Integrity
16.4.4.1
Static DF Signature
16.4.4.2
Static Chem DF
16.4.4.3
All DF Signature
16.5
SBS Configuration
16.5.1
Data
16.5.1.1
Manufacturer Date
16.5.1.2
Serial Number
16.5.1.3
Manufacturer Name
16.5.1.4
Device Name
16.5.1.5
Device Chemistry
16.5.1.6
Remaining Capacity Alarm
16.5.1.6.1
Remaining Ah Capacity Alarm
16.5.1.6.2
Remaining Wh Capacity Alarm
16.5.1.7
RemainingTimeAlarm
16.5.1.8
Initial Battery Mode
16.5.1.9
Specification Information
16.5.1.10
VLB Remaining Capacity
16.5.1.10.1
VLB Remaining Cap mAh
16.5.1.10.2
VLB Remaining Cap in cWh
16.5.1.11
VLB Voltage
16.5.1.12
VLB Hold Time
16.5.1.13
VLB Timeout
16.6
Lifetimes
16.6.1
Cell 1 Max Voltage
16.6.2
Cell 1 Min Voltage
16.6.3
Current
16.6.3.1
Max Charge Current
16.6.3.2
Max Discharge Current
16.6.3.3
Max Avg Dsg Current
16.6.3.4
Max Avg Dsg Power
16.6.4
Temperature-Relax
16.6.4.1
Max Temp Cell
16.6.4.2
Min Temp Cell
16.6.4.3
Min Temp Int Sensor
16.6.4.4
Max Temp Int Sensor
16.6.4.5
Max Temp Fet
16.6.4.6
Max Temp TS1
16.6.4.7
Min Temp TS1
16.6.5
Max Temp Cell
16.6.6
Min Temp Cell
16.6.7
Max Temp Int Sensor
16.6.8
Min Temp Int Sensor
16.6.9
Max Temp Fet
16.6.10
Max Temp TS1
16.6.11
Min Temp TS1
16.6.12
Max Temp Cell
16.6.13
Min Temp Cell
16.6.14
Max Temp Int Sensor
16.6.15
Min Temp Int Sensor
16.6.16
Max Temp Fet
16.6.17
Max Temp TS1
16.6.18
Min Temp TS1
16.6.19
Safety Events
16.6.19.1
No Of COV Events
16.6.19.2
Last COV Event
16.6.19.3
No Of CUV Events
16.6.19.4
Last CUV Event
16.6.19.5
No Of OCD1 Events
16.6.19.6
Last OCD1 Event
16.6.19.7
No Of OCD2 Events
16.6.19.8
Last OCD2 Event
16.6.19.9
No Of OCC1 Events
16.6.19.10
Last OCC1 Event
16.6.19.11
No Of OCC2 Events
16.6.19.12
Last OCC2 Event
16.6.19.13
No Of AOCD Events
16.6.19.14
Last AOCD Event
16.6.19.15
No Of ASCD Events
16.6.19.16
Last ASCD Event
16.6.19.17
No Of AOCC Events
16.6.19.18
Last AOCC Event
16.6.19.19
No Of OTC Events
16.6.19.20
Last OTC Event
16.6.19.21
No Of OTD Events
16.6.19.22
Last OTD Event
16.6.19.23
No Of OTF Events
16.6.19.24
Last OTF Event
16.6.20
Charging Events
16.6.20.1
No Valid Charge Term
16.6.20.2
Last Valid Charge Term
16.6.21
Gauging Events
16.6.21.1
No Of Qmax Updates
16.6.21.2
Last Qmax Update
16.6.21.3
No Of Ra Updates
16.6.21.4
Last Ra Update
16.6.21.5
No Of Ra Disable
16.6.21.6
Last Ra Disable
16.6.22
Time
16.6.22.1
Total Firmware Runtime
16.6.22.2
Time Spent in LFT_UUT
16.6.22.3
Time Spent in LFT_UT
16.6.22.4
Time Spent in LFT_LT
16.6.22.5
Time Spent in LFT_STL
16.6.22.6
Time Spent in LFT_RT
16.6.22.7
Time Spent in LFT_STH
16.6.22.8
Time Spent in LFT_HT
16.6.22.9
Time Spent in LFT_OT
16.7
Protections
16.7.1
CUV—Cell Undervoltage
16.7.1.1
Threshold
16.7.1.2
Delay
16.7.1.3
Recovery
16.7.1.4
Recovery Charger Present Time
16.7.2
CUVC—Cell Undervoltage
16.7.2.1
Threshold
16.7.2.2
Delay
16.7.2.3
Recovery
16.7.3
ACUV—Cell Under Voltage hardware based
16.7.3.1
Recovery (ACUV)
16.7.4
ACOV—Cell Over Voltage hardware based
16.7.4.1
Recovery (ACOV)
16.7.5
COV—Cell Overvoltage
16.7.5.1
Threshold Low Temp
16.7.5.2
Threshold Standard Temp Low
16.7.5.3
Threshold Standard Temp High
16.7.5.4
Threshold High Temp
16.7.5.5
Threshold Rec Temp
16.7.5.6
Delay
16.7.5.7
Recovery Low Temp
16.7.5.8
Recovery Standard Temp Low
16.7.5.9
Recovery Standard Temp High
16.7.5.10
Recovery High Temp
16.7.5.11
Recovery Rec Temp
16.7.5.12
Cell Overvoltage Latch Limit
16.7.5.13
Cell Overvoltage Counter Decrement Delay
16.7.5.14
Reset
16.7.6
OCC1—Overcurrent In Charge 1
16.7.6.1
Threshold
16.7.6.2
Delay
16.7.7
OCC2—Overcurrent In Charge 2
16.7.7.1
Threshold
16.7.7.2
Delay
16.7.8
OCC—Overcurrent In Charge Recovery
16.7.8.1
Recovery Threshold
16.7.8.2
Recovery Delay
16.7.9
OCD1—Overcurrent In Discharge 1
16.7.9.1
Threshold
16.7.9.2
Delay
16.7.10
OCD2—Overcurrent In Discharge 2
16.7.10.1
Threshold
16.7.10.2
Delay
16.7.11
OCD—Overcurrent In Discharge Recovery
16.7.11.1
Recovery Threshold
16.7.11.2
Recovery Delay
16.7.11.3
Latch Limit
16.7.11.4
Counter Dec Delay
16.7.11.5
Reset
16.7.12
AOCD—Overload in Discharge
16.7.12.1
Latch Limit
16.7.12.2
Counter Dec Delay
16.7.12.3
Recovery
16.7.12.4
Reset
16.7.13
AOCC—Overcurrent In Charge
16.7.13.1
Latch Limit
16.7.13.2
Counter Dec Delay
16.7.13.3
Recovery
16.7.13.4
Reset
16.7.14
ASCD—Short Circuit in Discharge
16.7.14.1
Latch Limit
16.7.14.2
Counter Dec Delay
16.7.14.3
Recovery
16.7.14.4
Reset
16.7.15
OTC—Overtemperature in Charge
16.7.15.1
Threshold
16.7.15.2
Delay
16.7.15.3
Recovery
16.7.16
OTD—Overtemperature in Discharge
16.7.16.1
Threshold
16.7.16.2
Delay
16.7.16.3
Recovery
16.7.17
OTF—Overtemperature FET
16.7.17.1
Threshold
16.7.17.2
Delay
16.7.17.3
Recovery
16.7.18
UTC—Undertemperature in Charge
16.7.18.1
Threshold
16.7.18.2
Delay
16.7.18.3
Recovery
16.7.19
UTD—Undertemperature in Discharge
16.7.19.1
Threshold
16.7.19.2
Delay
16.7.19.3
Recovery
16.7.20
HWD—Host Watchdog
16.7.21
PTO—PRECHARGE Mode Time Out
16.7.21.1
Charge Threshold
16.7.21.2
Suspend Threshold
16.7.21.3
Delay
16.7.21.4
Reset
16.7.22
CTO—Fast Charge Mode Time Out
16.7.22.1
Charge Threshold
16.7.22.2
Suspend Threshold
16.7.22.3
Delay
16.7.22.4
Reset
16.7.23
OC—Overcharge
16.7.23.1
Threshold
16.7.23.2
Recovery
16.7.23.3
RSOC Recovery
16.7.24
CHGV—ChargingVoltage
16.7.24.1
Threshold
16.7.24.2
Delay
16.7.24.3
Recovery
16.7.25
CHGC—ChargingCurrent
16.7.25.1
Threshold
16.7.25.2
Delay
16.7.25.3
Recovery Threshold
16.7.25.4
Recovery Delay
16.7.26
PCHGC—Pre-ChargingCurrent
16.7.26.1
Threshold
16.7.26.2
Delay
16.7.26.3
Recovery Threshold
16.7.26.4
Recovery Delay
16.8
Permanent Fail
16.8.1
SUV—Safety Cell Undervoltage
16.8.1.1
Threshold
16.8.1.2
Delay
16.8.2
SOV—Safety Cell Overvoltage
16.8.2.1
Threshold
16.8.2.2
Delay
16.8.3
SOCC—Safety Overcurrent in Charge
16.8.3.1
Threshold
16.8.3.2
Delay
16.8.4
SOCD—Safety Overcurrent in Discharge
16.8.4.1
Threshold
16.8.4.2
Delay
16.8.5
SOT—Overtemperature Cell
16.8.5.1
SOTC Threshold
16.8.5.2
SOTC Delay
16.8.5.3
SOTD Threshold
16.8.5.4
SOTD Delay
16.8.6
SOTF—Overtemperature FET
16.8.6.1
Threshold
16.8.6.2
Delay
16.8.7
CD—Capacity Degradation
16.8.7.1
Threshold
16.8.7.2
Delay
16.8.8
CFET—CHG FET Failure
16.8.8.1
OFF Threshold
16.8.8.2
OFF Delay
16.8.9
DFET—DFET Failure
16.8.9.1
OFF Threshold
16.8.9.2
OFF Delay
16.8.10
AFER—AFE Register
16.8.10.1
Threshold
16.8.10.2
Delay Period
16.8.10.3
Compare Period
16.8.11
AFEC—AFE Communication
16.8.11.1
Threshold
16.8.11.2
Delay Period
16.9
PF Status
16.9.1
Device Status Data
16.9.1.1
Safety Alert A
16.9.1.2
Safety Status A
16.9.1.3
Safety Alert B
16.9.1.4
Safety Status B
16.9.1.5
Safety Alert C
16.9.1.6
Safety Status C
16.9.1.7
Safety Alert D
16.9.1.8
Safety Status D
16.9.1.9
PF Alert A
16.9.1.10
PF Status A
16.9.1.11
PF Alert B
16.9.1.12
PF Status B
16.9.1.13
PF Alert C
16.9.1.14
PF Status C
16.9.1.15
PF Alert D
16.9.1.16
PF Status D
16.9.1.17
Fuse Flag
16.9.1.18
Operation Status A
16.9.1.19
Operation Status B
16.9.1.20
Temp Range
16.9.1.21
Charging Status A
16.9.1.22
Charging Status B
16.9.1.23
Gauging Status
16.9.1.24
IT Status
16.9.2
Device Voltage Data (at the Time of PF Event)
16.9.2.1
Cell 1 Voltage
16.9.2.2
Battery Direct Voltage
16.9.2.3
Pack Voltage
16.9.3
Device Current Data
16.9.4
Device Gauging Data (at the Time of PF Event)
16.9.4.1
Cell 1DOD0
16.9.4.2
Passed Charge
16.9.5
AFE Regs
16.9.5.1
OCC
16.9.5.2
OCD1
16.9.5.3
OCD2
16.9.5.4
Short Circuit Discharge
16.9.5.5
Current Discharge Wake
16.9.5.6
Current Charge Wake
16.9.5.7
OCC 1 Delay 2
16.9.5.8
OCC 1 Delay 1
16.9.5.9
OCD 1 Delay 2
16.9.5.10
OCD 1 Delay 1
16.9.5.11
OCD 2 Delay 2
16.9.5.12
OCD 2 Delay 1
16.9.5.13
Short Circuit Discharge Delay
16.9.5.14
Over Temperature Delay
16.9.5.15
OCD Wake Delay 2
16.9.5.16
OCD Wake Delay 1
16.9.5.17
OCC Wake Delay 2
16.9.5.18
OCC Wake Delay 1
16.10
Black Box
16.10.1
Safety Status
16.10.2
PF Status
16.11
Gas Gauging
16.11.1
Current Thresholds
16.11.1.1
Dsg Current Threshold
16.11.1.2
Chg Current Threshold
16.11.1.3
Quit Current
16.11.1.4
Dsg Relax Time
16.11.1.5
Chg Relax Time
16.11.2
Design
16.11.2.1
Design Capacity mAh
16.11.2.2
Design Capacity cWh
16.11.2.3
Design Voltage
16.11.3
Cycle
16.11.4
FD
16.11.4.1
Set Voltage Threshold
16.11.4.2
Clear Voltage Threshold
16.11.4.3
Set % RSOC Threshold
16.11.4.4
Clear % RSOC Threshold
16.11.5
FC
16.11.5.1
Set Voltage Threshold
16.11.5.2
Clear Voltage Threshold
16.11.5.3
Set % RSOC Threshold
16.11.5.4
Clear % RSOC Threshold
16.11.6
TD
16.11.6.1
Set Voltage Threshold
16.11.6.2
Clear Voltage Threshold
16.11.6.3
Set % RSOC Threshold
16.11.6.4
Clear % RSOC Threshold
16.11.7
TC
16.11.7.1
Set Voltage Threshold
16.11.7.2
Clear Voltage Threshold
16.11.7.3
Set % RSOC Threshold
16.11.7.4
Clear % RSOC Threshold
16.11.8
State
16.11.8.1
QMax
16.11.8.2
Update Status
16.11.8.3
Cell 1 Chg Voltage at EoC
16.11.8.4
Current at EoC
16.11.8.5
Average Last Run
16.11.8.5.1
Avg I Last Run
16.11.8.5.2
Avg P Last Run
16.11.8.6
Delta Voltage
16.11.8.7
Temp
16.11.8.7.1
Temp k
16.11.8.7.2
Temp a
16.11.8.8
Max Avg Last Run
16.11.8.8.1
Max Avg I Last Run
16.11.8.8.2
Max Avg P Last Run
16.11.8.9
SOH FCC Max
16.11.8.9.1
SOH FCC Max mAh
16.11.8.9.2
SOH FCC Max cWh
16.11.8.10
SOH Temp
16.11.8.10.1
SOH Temp k
16.11.8.10.2
SOH Temp a
16.11.8.11
Cycle Count
16.11.9
Turbo Cfg
16.11.9.1
Min System Voltage
16.11.9.2
Ten Second Max C-Rate
16.11.9.3
Ten Millisecond Max C-Rate
16.11.9.4
High Frequency Resistance
16.11.9.5
Reserve Energy %
16.11.9.6
Turbo Adjustment Factor
16.11.10
IT-DZT Config
16.11.10.1
Design Resistance
16.11.10.2
Pack Resistance
16.11.10.3
System Resistance
16.11.10.4
Predict Ambient Time
16.11.10.5
Ra Filter
16.11.10.6
Ra Max Delta
16.11.10.7
Reference Grid
16.11.10.8
Resistance Parameter Filter
16.11.10.9
Near EDV Ra Param Filter
16.11.10.10
Max Current Change %
16.11.10.11
Resistance Update Voltage
16.11.10.12
Qmax Delta
16.11.10.13
Qmax Upper Bound
16.11.10.14
Term Voltage
16.11.10.15
Res Relax Time
16.11.10.16
Term Voltage Delta
16.11.10.17
Max Simulation Iterations
16.11.10.18
Simulation Near Term Delta
16.11.10.19
Fast Scale Start SOC
16.11.10.20
DeltaV Max Voltage Delta
16.11.10.21
Load Select
16.11.10.22
Fast Scale Load Select
16.11.10.23
Load Mode
16.11.10.24
User Rate-mA
16.11.10.25
User Rate-cW
16.11.10.26
Reserve Cap-mAh
16.11.10.27
Reserve Cap-cWh
16.11.11
Smoothing
16.11.11.1
Smooth Relax Time
16.11.11.2
Term Smooth Start Cell V Delta
16.11.11.3
Term Smooth Final Cell V Delta
16.11.11.4
Term Smooth Time
16.11.12
Condition Flag
16.11.13
Max Error
16.11.13.1
Time Cycle Equivalent
16.11.13.2
Cycle Delta
16.11.14
SOH
16.12
RA Table
16.12.1
R_a0
16.12.2
R_a0x
17
Data Flash Access and Format
17.1
Data Flash Access
17.1.1
Minimum Voltage
17.2
Data Formats
17.2.1
Unsigned Integer
17.2.2
Integer
17.2.3
Floating Point
17.2.4
Hex
17.2.5
String
18
Data Flash Summary
18.1
Data Flash Summary
19
Revision History
16.1
Settings