Locale Icon
English
  • Forums

    Popular Forums

    • LTspice
    • Video
    • Power Management
    • RF & Microwave
    • Precision ADCs
    • FPGA Reference Designs

    Product Forums

    • Amplifiers
    • Clocks & Timers
    • Data Converters
    • Direct Digital Synthesis (DDS)
    • Energy
    • Interface and Isolation
    • MEMS Inertial Sensors
    • Power Management
    • Processors & DSP
    • Processors & Microcontrollers
    • Switches & Multiplexers
    • Sensors
    • Voltage References
    View All

    Application Forums

    • A2B Audio Bus
    • Audio
    • Automated Test Equipment (ATE)
    • Condition-Based Monitoring
    • Depth, Perception & Ranging Technologies
    • LiDAR Solutions
    • Motor Control Hardware Platforms
    • Speech Processing Solutions
    • Video

    Design Center Forums

    • ACE Evaluation Software
    • ADEF System Platforms
    • Design Tools & Calculators
    • FPGA Reference Designs
    • Linux Software Drivers
    • Microcontroller no-OS Drivers
    • Precision Studio
    • Power Studio Designer
    • Power Studio Planner
    • Reference Designs
    • Robot Operating System (ROS) SDK
    • Signal Chain Designer
    • Software Interface Tools
  • Learn

    Highlighted Webinar

    Power Integrity for High Performance Measurement Systems

    Increasing data rates driven by AI workloads and the evolution from 5G to emerging 6G standards are placing new demands on electronic test and measurement...

    Places

    • ADI Academy
    • ADI Webinars
    • EZ Blogs
    • Video Annex
    • Virtual Classroom

    Libraries

    • 3D ToF Depth Sensing Library
    • Continuous-Wave CMOS Time of Flight (TOF) Library
    • Embedded Vision Sensing Library
    • Gigabit Multimedia Serial Link (GMSL) Library
    • Optical Sensing Library
    • Other Products Library
    • Precision Technology Signal Chains Library
    • Software Modules and SDKs Library
    • Supervisory Circuits Library
    • Wireless Sensor Networks Library

    Upcoming Learning & Events

    • Humanoid Robotics: Deterministic Motion Control & Edge AI Systems
    View All Webinars
  • Community Hub

    Challenge Yourself!

      KCC Quizzes AQQ302 about Bang Gap Reference Generation

      1.Quote of the month: "People Who Say They Sleep Like a Baby usually don't have one" - unknown 2. New quiz AQQ302 about Band Gap Reference Voltage...

    View All

    What's Brewing

      Read a Blog, Take this Quiz for Another Chance to Win a Gift Card! - Watts Going On? — The AI Power Delivery Quiz

      Important: Read the blog first . The quiz questions are all based on the content of the blog: Reimagining Power for AI: Shaping the Future of AI Acceleration...

    View All

    Places

    • Community Help
    • Analog Dialogue Quiz
    • Logic Lounge
    • Super User Program

    Resources

    • EZ Code of Conduct
    • EZ How To Help Articles
    • Getting Started Guide
    • ADI: Words Matter
    • Community Help Videos
    View All
  • ContentZone

    Visit ContentZone

    Search content by industry or technology.
    • Blogs
    • Technical Articles
    • Tutorials
    • Videos
    • Webinars
    Your ADI content all in one place.
    View ContentZone

    The Latest Read

    JESD204 Bring-Up: From Link-Up to Data Integrity

    This blog presents a structured bring-up methodology for the ZCU102 + ADRV9009 platform, stepping through each initialization phase in sequence and identifying...

    New Release

    Signal Chain Designer: DC Error Simulation
    Signal Chain Designer: DC Error Simulation

    This video covers the DC error calculation capabilities of Signal Chain Designer. DC error is unique in that often requires calibration and has so many...

    Recent Technical Insights

    Latest Technical Article from Analog.com
    Game of DronesPart 1: How IMU Navigation Architectures Make or Break a Drone

    This article explains why industrial-grade UAVs require fundamentally different architectures than consumer drones. It highlights the need for inertial...

EngineerZone
EngineerZone
Battery Management System
  • Log In
  • User
  • Site
  • Search
OR
Ask a Question
Battery Management System
  • Power Management
Battery Management System
Documents The voltage, current, and temperature values read from MAX17201, MAX17205, MAX17211, MAX17215 are correct, but the RepSOC is always 1.0%. Why is that?
  • Q&A
  • FAQs/ Docs
  • Members
  • Tags
  • Cancel
  • +Documents
  • +ADBMS6830: FAQ
  • +ADP5061: FAQ
  • +DS2438: FAQ
  • +DS2438Z+: FAQ
  • +DS2704G+: FAQ
  • +DS2711: FAQ
  • +DS2711E+: FAQ
  • +DS2712E+: FAQ
  • +DS2712EVKIT+: FAQ
  • DS2715: FAQ
  • +DS2715BZ+: FAQ
  • DS2740: FAQ
  • +DS2740U: FAQ
  • +DS2745EVKIT+: FAQ
  • +DS2745U+: FAQ
  • +DS2762AE+: FAQ
  • +DS2764AE+025: FAQ
  • DS2775: FAQ
  • +DS2775G+: FAQ
  • +DS2777: FAQ
  • +DS2781AE+/: FAQ
  • +DS2782E+: FAQ
  • DS2784: FAQ
  • +DS2784G+: FAQ
  • +DS2786: FAQ
  • DS2788: FAQ
  • DS2788E+: FAQ
  • +DS2788E+T&R: FAQ
  • +DS2788EVKIT+: FAQ
  • How do I create a model with DS2788
  • MAX14690: FAQ
  • +MAX14690AEVAL#: FAQ
  • +MAX14745AEWX+: FAQ
  • +MAX14745DEWX+: FAQ
  • +MAX14745GEWX+: FAQ
  • +MAX14745MEWX+T: FAQ
  • +MAX14920ECB+: FAQ
  • +MAX14921 EVKIT SOF: FAQ
  • MAX14921: FAQ
  • +MAX14921ECS+: FAQ
  • +MAX1501: FAQ
  • +MAX1555EZK+T: FAQ
  • +MAX16016: FAQ
  • +MAX1667EAP_T1: FAQ
  • +MAX17043G+T: FAQ
  • +MAX17043G+U: FAQ
  • +MAX17043X+: FAQ
  • MAX17048: FAQ
  • MAX17048G+: FAQ
  • +MAX17048G+CHU: FAQ
  • +MAX17049: FAQ
  • +MAX17050X+T10: FAQ
  • MAX17055: FAQ
  • MAX17055AEWL+: FAQ
  • +MAX17055AEWL+_B1: FAQ
  • MAX17055ETB+: FAQ
  • +MAX17055ETB+T: FAQ
  • +MAX17055EWL+T: FAQ
  • +MAX17055GEVKIT: FAQ
  • +MAX17058: FAQ
  • MAX17201: FAQ
  • MAX17201G+: FAQ
  • +MAX17201G+T0E: FAQ
  • MAX17201G+T: FAQ
  • +MAX17201GEVKIT#: FAQ
  • MAX17205: FAQ
  • MAX17205G+: FAQ
  • -MAX17205G+T: FAQ
    • After selecting a default Murata thermistor in the MAX17201/205/211/215 ModelGauge GUI, the Configuration wizard clears the nTGain and nTOff registers. Is this a bug?
    • Can the MAX17205 be used with more than 15 cells in series?
    • Choosing the right part for measuring 8-cell lithium iron phosphate (LiFePO4) battery
    • Could MAX17205 be supported for monitoring and balancing a 4S pack?
    • Does MAX17205 support Nickel-cadmium (NiCd) batteries or Nickel-metal-hydride (NiMH) batteries?
    • For the MAX17201/05/11/15 Fuel Gauges, what should I do with the THERM, AIN1 and AIN2 pins if I do not implement temperature monitoring?
    • How do l convert the current register value to actual current value for MAX17201, MAX17211, MAX17205, MAX17215?
    • How to achieve a proper boot sequence for the MAX17205?
    • How to achieve cell balancing for the MAX17205 in a low power application?
    • How to load a battery model without triggering an NV write cycle?
    • How to power the MAX17205 with the battery pack of more than 4 cells in series?
    • How to use memory locks in MAX1720x design?
    • In MAX17201/5 GUI how to change the cell capacity?
    • Should the I2C address of MAX17201, MAX17205 be 0001011x or 0010110x?
    • The MAX17201, MAX17211, MAX17205, MAX17215 nPackCfg Register (1B5h) is related to battery pack configuration. Should this register have the same content as PackCfg (0BDh) register?
    • The voltage, current, and temperature values read from MAX17201, MAX17205, MAX17211, MAX17215 are correct, but the RepSOC is always 1.0%. Why is that?
    • What is the MAX17205 I2C address?
    • When using the MAX17205, how do we determine if the battery is charging or discharging?
  • +MAX17205GEVKIT#: FAQ
  • +MAX17211G+: FAQ
  • +MAX17215G+: FAQ
  • +MAX17260 EVALUATION KIT SOFTWARE: FAQ
  • MAX17260BEWL+: FAQ
  • +MAX17260BEWL+_B1: FAQ
  • +MAX17260SETD+: FAQ
  • +MAX17260SEWL+: FAQ
  • +MAX17260XEVKIT#: FAQ
  • +MAX17261GEVKIT#: FAQ
  • MAX17261METD+: FAQ
  • +MAX17261METD+T: FAQ
  • +MAX17261MEWL+: FAQ
  • +MAX17261XEVKIT#: FAQ
  • +MAX17262REWL+: FAQ
  • +MAX17263GEVKIT#: FAQ
  • +MAX17263LETD+: FAQ
  • +MAX17301G+: FAQ
  • +MAX17301GEVKIT#: FAQ
  • +MAX17303G+: FAQ
  • +MAX17303X+T: FAQ
  • +MAX17313G+: FAQ
  • +MAX17320G10+: FAQ
  • +MAX17320G1EVKIT#: FAQ
  • +MAX17320G20+: FAQ
  • +MAX17320X22+: FAQ
  • +MAX17320X2EVKIT#: FAQ
  • MAX1737: FAQ
  • +MAX1737EEI+T: FAQ
  • +MAX17435: FAQ
  • +MAX1757EAI+: FAQ
  • +MAX1758EAI (28-SSOP): FAQ
  • +MAX1758EAI+: FAQ
  • +MAX17703ATG+: FAQ
  • MAX17823BGCB/V+: FAQ
  • +MAX17823BGCB/V+T: FAQ
  • +MAX17841BGUE/V+T: FAQ
  • MAX17843: FAQ
  • MAX17843ACB/V+: FAQ
  • +MAX17843ACB/V+_T1: FAQ
  • +MAX17851EVKIT#: FAQ
  • +MAX17852ACB/V+: FAQ
  • +MAX17852EVKIT#: FAQ
  • +MAX17853ACB/V+: FAQ
  • +MAX17853EVKIT#: FAQ
  • +MAX1870AETJ+: FAQ
  • +MAX1873REEE+: FAQ
  • MAX1873REEE: FAQ
  • +MAX1873TEEE+: FAQ
  • +MAX20094ATI/VY+: FAQ
  • +MAX20094ATIB/VY+: FAQ
  • MAX20303: FAQ
  • MAX20303AEWN+: FAQ
  • +MAX20303AEWN+T: FAQ
  • +MAX20303BEWN+: FAQ
  • +MAX20303EVKIT#: FAQ
  • +MAX20303EWN+: FAQ
  • +MAX20335AEWX+: FAQ
  • +MAX20353: FAQ
  • +MAX20360AEWZ+: FAQ
  • +MAX6361: FAQ
  • MAX6900: FAQ
  • +MAX6900ETTAEQ-T: FAQ
  • +MAX6953EAX+: FAQ
  • +MAX713: FAQ
  • +MAX7452: FAQ
  • +MAX7456EUI+_T1: FAQ
  • MAX77650: FAQ
  • +MAX77650AEWV+: FAQ
  • +MAX77650BEWV+: FAQ
  • +MAX77650CEWV+: FAQ
  • +MAX77651AEWV+: FAQ
  • +MAX77654AENV+: FAQ
  • +MAX77654AENVN+: FAQ
  • +MAX77654BENV+: FAQ
  • +MAX77654_NV+_A1: FAQ
  • +MAX77734AENP+T: FAQ
  • +MAX77734BENP+: FAQ
  • +MAX77818 CHARGER+F: FAQ
  • +MAX77818EVKIT#: FAQ
  • +MAX77818EVSYS#: FAQ
  • MAX77818EWZ+: FAQ
  • +MAX77818EWZ+T: FAQ
  • +MAX77840EVKIT#: FAQ
  • MAX77950: FAQ
  • +MAX77950EVKIT#: FAQ
  • +MAX77950EWW+_B1: FAQ
  • +MAX77960BEFV06+: FAQ
  • MAX77961EFV+: FAQ
  • +MAX77961EFV+T: FAQ
  • +MAX77961EFV06+T: FAQ
  • +MAX77962EWJ+_B1: FAQ
  • +MAX77962EWJ12+: FAQ
  • +MAX77975EFD+: FAQ
  • +MAX77976EFD+: FAQ
  • +MAX8677AETG+: FAQ
  • +MAX8713EVKIT: FAQ
  • +MAX8856ETD+: FAQ
  • +MAX8895VEWA+: FAQ
  • +MAX8903A: FAQ
  • +MAX8934AETI+: FAQ
  • MAX8971: FAQ
  • +MAX8971CEWP+: FAQ
  • +MAX8971EWP+T: FAQ

The voltage, current, and temperature values read from MAX17201, MAX17205, MAX17211, MAX17215 are correct, but the RepSOC is always 1.0%. Why is that?

 
The tips below may be helpful:
1. When configuring the registers, the battery cannot be charging or discharging as OCV estimation takes place after the setup. If there is any current during that period, the OCV may be incorrect, introducing error to RepSOC.

2. For multi-cell battery, the battery capacity is related to the number of cells connected in parallel, not the batteries connected in series. For example, for 2600mAh cell connected in 3S1P, the capacity of the battery pack is still 2600mAh. It is not 2600*3 =7800mAh.
 

Tags: MAX17211 MAX17201 MAX17215 MAX17205G+ 000102486
  • Share
  • History
  • Cancel
 
Related Content
  • How do I obtain battery capacity using MAX17201,MAX17211, MAX17205, MAX17215?
    MSDAPI
    The absolute(mAh) or relative(in %) capacity of the battery can be obtained by reading the RepCap (005h) register (reported capacity) or RepSOC (006h) register. (reported SOC).
  • Can I measure battery cells in series/parallel for use with fuel gauges?
    MSDAPI
    Yes. Series and parallel combinations of batteries should be the same battery model. Two parallel batteries look like a single battery with twice the capacity of the batteries that make it up. Depending...
  • Can MAX17215 be powered separately from a source other than the battery it is gauging?
    MSDAPI
    VBATT pin is Power supply input as well as Battery voltage sense input. External bias to MAX17215 is not possible.
 
Related Content
  • How do I obtain battery capacity using MAX17201,MAX17211, MAX17205, MAX17215?
    MSDAPI
    The absolute(mAh) or relative(in %) capacity of the battery can be obtained by reading the RepCap (005h) register (reported capacity) or RepSOC (006h) register. (reported SOC).
  • Can I measure battery cells in series/parallel for use with fuel gauges?
    MSDAPI
    Yes. Series and parallel combinations of batteries should be the same battery model. Two parallel batteries look like a single battery with twice the capacity of the batteries that make it up. Depending...
  • Can MAX17215 be powered separately from a source other than the battery it is gauging?
    MSDAPI
    VBATT pin is Power supply input as well as Battery voltage sense input. External bias to MAX17215 is not possible.
analog-devices logo

About Analog Devices

  • Who We Are
  • Careers
  • Newsroom
  • What We Do (Signals+)
  • Investor RelationsExternalLink
  • Quality & Reliability
  • Sales and Distribution
  • What's New on Analog.com
  • Contact Us

Find Help

  • Support
  • Resources
  • WikiExternalLink
  • Analog Dialogue
  • ADI Developer PortalExternalLink

myAnalog

Interested in the latest news and articles about ADI products, design tools, training, and events?

Go to myAnalog
  • Instagram page
  • Twitter page
  • Linkedin page
  • Youtube page
  • Facebook
  • Legal and Risk
  • Accessibility
  • Privacy Policy
  • Privacy Settings
  • Cookie Settings

©2026 Analog Devices, Inc. All Rights Reserved

analog-devices

About Analog Devices

Down Up
  • Who We Are
  • Careers
  • Newsroom
  • What We Do (Signals+)
  • Investor RelationsExternalLink
  • Quality & Reliability
  • Sales and Distribution
  • What's New on Analog.com
  • Contact Us

Find Help

Down Up
  • Support
  • Resources
  • WikiExternalLink
  • Analog Dialogue
  • ADI Developer PortalExternalLink

myAnalog

Interested in the latest news and articles about ADI products, design tools, training, and events?

Go to myAnalog
Instagram page Facebook Twitter page Linkedin page Youtube page
  • Legal and Risk
  • Accessibility
  • Privacy Policy
  • Privacy Settings
  • Cookie Settings

©2026 Analog Devices, Inc. All Rights Reserved