Product details


Cell chemistry Lead Acid, Li-Ion/Li-Polymer, LiFePO4, NiCd, NiMH Number of series cells 2-4 Cells, >4 Cells, Single Cell Communication interface I2C Battery capacity (Min) (mAh) 100 Battery capacity (Max) (mAh) 29000 Implementation Pack, System External capacity indication None Features Accumulated Coulomb Count, CEDV algorithm, End of Service, SHA-1 Authentication Operating temperature range (C) -40 to 85 Cell balancing open-in-new Find other Battery fuel gauges

Package | Pins | Size

TSSOP (PW) 14 32 mm² 5 x 6.4 open-in-new Find other Battery fuel gauges


  • Accurate End-Of-Service (EOS) Determination for Batteries in Rarely Discharged Applications
  • Compensated End-of-Discharge Voltage (CEDV) Gas Gauge for Single- and Multi-Cell Batteries, Providing
    • State-Of-Charge (SOC)
    • Time-To-Empty (TTE)
    • State-Of-Health (SOH)
    • Watt-Hour–Based Charge Termination
  • Supports Voltages up to 65 V, Capacities up to 32 Ah, and Currents up to 32 A—with Options to Extend Beyond These Levels Using Scaling
  • Supports Li-Ion, LiFePO4, Lead-Acid (PbA), NiMH, and NiCd Chemistries
  • Dual Configurable Host Interrupt or GPO
  • Lifetime Data Logging Options
  • Precision Coulomb Counter, Voltage, and Temperature Measurement
  • Power Enable Control
  • I2C™ Communication with Host
  • Accumulated Charge Coulomb Counting with Configurable Interrupt
  • SHA-1 Authentication
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The bq34110 CEDV Battery Gas Gauge provides CEDV gas gauging and End-Of-Service (EOS) Determination for single- and multi-cell batteries. The device includes enhanced features to support applications where the battery is kept fully charged and is rarely discharged, such as found in a wide variety of backup systems. The bq34110 gas gauge supports multiple battery chemistries, including Li-Ion and LiFePO4, lead acid (PbA), Nickel Metal Hydride (NiMH), and Nickel Cadmium (NiCd).

The gas gauging function uses voltage, current, and temperature data with Compensated End-of-Discharge Voltage (CEDV) technology to provide State-Of-Charge (SOC) and State-Of-Health (SOH) data. The gas gauge also incorporates an End-Of-Service (EOS) Determination function that alerts when battery capability has degraded and is approaching the conclusion of its usable service.

The data available from the gauge can be read by the host through a 400-kHz I2C bus. Two ALERT outputs are also available to interrupt the host or can be used for other functions, based on a variety of configurable options.

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Technical documentation

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Type Title Date
* Data sheet bq34110 Multi-Chemistry CEDV Battery Gas Gauge for Rarely Discharged Applications datasheet (Rev. B) Nov. 10, 2016
* User guide bq34110 Technical Reference Manual (Rev. A) Aug. 09, 2018
User guide bq34110 Out-of-Box Quick Start Guide Aug. 21, 2018
User guide bq34110EVM-796 Evaluation Module (Rev. A) Jul. 26, 2018
User guide Simple Guide to CEDV Data Collection for Gauging Parameter Calculator (GPC) (Rev. B) Jan. 30, 2018
Application note Gauge Communication Jan. 12, 2017
Technical article How do you detect battery aging in rarely discharged applications? Jan. 10, 2017
Technical article How to choose a multicell gauge Dec. 16, 2016
Application note Using I2C Communications With the bq34110 bq35100 and bq34z100-G1 Series of Gas Nov. 09, 2016

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide
This evaluation module (bq34110EVM-796) is a complete evaluation system for the bq34110 wide range gas gauge that supports multiple battery chemistries, including Li-Ion and LiFePO4, lead acid (PbA), Nickel Metal Hydride (NiMH), and Nickel Cadmium (NiCd) when combined with an EV2400 USB adapter and (...)
  • Complete evaluation system for the bq34110 gas gauge with external learning load
  • Populated circuit module for quick setup
  • Link to software allowing data logging for system analysis

Software development

Production Application Software for Hi-Cell Count Battery Fuel (Gas) Gauges
BQ-HI-PRODUCTION — Hi-cell bqProduction offers a full suite of robust tools to assist with the process of configuring, calibrating, manufacturing and tracking printed circuit boards utilizing TI Battery management products. This includes features that allow writing a golden image followed by different types of (...)
  • Support for EV2300
  • Uses industry standard Motorola SREC format golden image programmer
  • Calibration and test automation
  • Unique serial number assignment/programming
  • Supports bq34z100-G1, bq34110
Battery Management Studio (bqStudio) Software
BQSTUDIO Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)
  • Real-time Gauge Dashboard for monitoring basic registers
  • Full register access and logging
  • Full data memory access and logging
  • Product configuration and monitoring tools
  • Import and export of product configurations
  • Calibration and test automation
  • Export of FS files for the target production environment 
Gauging Parameter Calculator for CEDV gauges
GPCCEDV Gauging Parameter Calculator (GPC) is a math calculation and simulation tool that helps the battery designer to obtain matching Compensated End of Discharge Voltage (CEDV) coefficients for the specific battery profile. The tool allows the user to increase the accuracy of the fuel gauge IC over (...)
SLUC622.ZIP (4184 KB)

CAD/CAE symbols

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