Battery fuel gauges
Accurate gauging products for any battery system
We offer highly accurate gauges for applications ranging from smartphones, notebooks and power tools to vacuums and energy storage systems (ESS). There are gauges equipped with integrated protection or for higher voltage applications up to 15 cells in series. Our patented gauging algorithms help gauges accurately measure state of charge and state of health for a variety of chemistries including li-ion, LiFePO4 and NiMH.
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Battery fuel gauges
Battery fuel gauge with integrated protector for 1-series to 2 series packs with 1.2-V I/O
Approx. price (USD) 1ku | 1.553
Battery fuel gauges
Single-cell battery fuel gauge with pre-programmed chemistry and integrated sense resistor
Approx. price (USD) 1ku | 0.5
Battery fuel gauges
Multichemistry Impedance Track™ stand-alone fuel gauge
Approx. price (USD) 1ku | 1.711
Technical resources
White paper
Impedance Track Based Fuel Gauging
What makes our gauges so special? Patented gauging Impedance Track™ technology allows for higher accuracy. If you are interested in learning more about this technology, download this white paper.
Application note
Gauge Communication
Battery gauges have a rich set of parameters that enable compatibility with a wide range of battery types and applications. Learn how to program these parameters and read gauge results.
Video
Battery Protector, Monitor or Gauge?
This short overview provides a short summary of system requirements to help you choose a battery protector, monitor or gauge.
Discover featured applications
Medical
Create a safe and long-lasting battery system in medical applications with our battery gauge technology
E-mobility
Know when you need to charge in e-mobility applications with our battery gauge technology
Retail automation & payment
Enable efficient battery usage in retail automation and payment applications with our battery gauge technology
Vacuum robot
Create longer run times and fewer trips back to base with our battery gauge technology
Create a safe and long-lasting battery system in medical applications with our battery gauge technology
Benefits:
- Protection integrated into the battery gauge increases confidence in battery management system safety while reducing system costs.
- Features such as the maximum chemical capacity (QMax) allow battery management systems to last as long as safely possible, whether used daily or sitting on a shelf.
- A maximized battery lifespan through cell balancing prevents any individual cell from becoming over- or under-charged.
Featured resources
END-EQUIPMENT / SUB-SYSTEM
REFERENCE DESIGNS
- TIDA-00553 – Multi-Cell Battery Manager Unit with Integrated Charging, Gauging, Authentication and Protection
- PMP5722 – Single Cell Battery Power Solution Reference Design
PRODUCTS
- BQ27Z561-R2 – Impedance track battery gas gauge solution for 1-series cell li-ion battery packs
- BQ40Z50-R2 – 1-4 series Li-ion battery pack manager supporting Turbo Mode 2.0
- BQ35100 – Battery fuel gauge for non-rechargeable batteries (lithium primary) and end-of-service monitor
HARDWARE DEVELOPMENT
- BQ27Z561EVM-011 – BQ27Z561 1S-cell programmable battery manager Evaluation module
- BQ40Z50EVM-561 – BQ40Z50 evaluation board
- BQ35100EVM-795 – bq35100 Lithium Primary Cell Evaluation Module Using End-of-Service Monitor Gas Gauging
DESIGN TOOLS AND SIMULATION
- BQSTUDIO – Battery Management Studio (bqStudio) Software
Know when you need to charge in e-mobility applications with our battery gauge technology
Benefits:
- Built-in authenticaion prevents the use of any third party or unofficial battery packs, increasing confidence that the system will work as intended.
- An integrated black-box feature provides lifetime data upon unexpected results.
- An operating temperature range of -40°C to 150°C ensures reliability in almost any environment
Featured resources
END-EQUIPMENT / SUB-SYSTEM
REFERENCE DESIGNS
- TIDA-010030 – Accurate gauging and 50-μA standby current, 13-S, 48-V li-ion battery pack reference design
- TIDA-00255 – 15 Cell Lithium Ion Battery Controller Analog Front End Reference Design
- TIDA-00792 – Multi-Cell 36-48V Battery Management System Reference Design
PRODUCTS
- BQ34Z100 – 1-s to 16-s Impedance Track™ fuel gauge | battery gas gauge
- BQ78350-R1A – CEDV li-ion gas gauge and battery management controller
HARDWARE DEVELOPMENT
- BQ34Z100EVM – Bq34z100EVM 1s to 16s Impedance Track Fuel Gauge Battery Evaluation Module | Gas Gauge Battery
- BQ76940EVM – BQ76940 evaluation board with BQ78350
DESIGN TOOLS AND SIMULATION
- BQSTUDIO – Battery Management Studio (bqStudio) Software
Enable efficient battery usage in retail automation and payment applications with our battery gauge technology
Benefits:
- Precise gauging algorithms ensure the battery's exact state of charge.
- Single-cell gauges in die size ball-grid array (DSBGA) packaging enables a small footprint.
- A chemistry-ID system allows for shorter design cycles without sacrificing gauge accuracy.
Featured resources
END-EQUIPMENT / SUB-SYSTEM
REFERENCE DESIGNS
- PMP40496 – 2-cell boost charge system reference design with 5-V USB
- TIDA-00593 – Single Cell Li-Ion Battery Pack-side Fuel Gauge Reference Design
PRODUCTS
- BQ27426 – Single cell System-side battery fuel (gas) gauge w/Pre-programmed chemistry Profile
- BQ28Z610-R1 – Battery fuel gauge with integrated protector for 1-2 series packs
- BQ27Z561-R2 – Impedance track battery gas gauge solution for 1-series cell li-ion battery packs
HARDWARE DEVELOPMENT
- BQ27426EVM-738 – BQ27426 EVM for Impedance Track Fuel Gauge w/Easy to Use Pre-programmed Chemistry Profiles
- BQ28Z610EVM-532 – BQ28Z610 1-Cell to 2-Cell Programmable Battery Manager Evaluation Module
- BQ27Z561EVM-011 – BQ27Z561 1S-cell programmable battery manager Evaluation module
DESIGN TOOLS AND SIMULATION
- BQSTUDIO – Battery Management Studio (bqStudio) Software
Create longer run times and fewer trips back to base with our battery gauge technology
Benefits:
- ±1-mV gauging accuracy enables longer run times and fewer trips back to base.
- Built-in authentication prevents the use of any third party or unofficial battery packs, increasing confidence that the system will work as intended.
- Maximized battery lifespan through cell balancing prevents any individual cell from becoming over- or under-charged.
Featured resources
END-EQUIPMENT / SUB-SYSTEM
REFERENCE DESIGNS
- TIDA-00883 – 1 to 4 Series Cell Li-Ion Battery Pack Manager Reference Design
- TIDA-00553 – Multi-Cell Battery Manager Unit with Integrated Charging, Gauging, Authentication and Protection
PRODUCTS
- BQ40Z50-R2 – 1-4 series Li-ion battery pack manager supporting Turbo Mode 2.0
- BQ4050 – 1-4 series CEDV battery fuel (gas) gauge
HARDWARE DEVELOPMENT
- BQ40Z50EVM-561 – BQ40Z50 evaluation board
- BQ4050EVM-561 – 1 Series, 2 Series, 3 Series, and 4 Series Li-Ion Battery Pack Manager Evaluation Module
DESIGN TOOLS AND SIMULATION
- BQSTUDIO – Battery Management Studio (bqStudio) Software
Design & development resources
Application software & framework
Battery Management Studio (bqStudio) Software
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 (...)
Calculation tool
Gauging Parameter Calculator
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 (...)
Support software
MathCAD compensated end of discharge voltage (CEDV) tool
Math calculation and simulation tool that helps the battery designer to obtain matching CEDV coefficients for the specific chemistry in the battery pack using one of TI’s CEDV algorithm based fuel gauge. It accepts 3 pairs of log files that can be created by using TI’s bq Smart Battery (...)