Gauge Development Kit (GDK)
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Important Note

GDK firmware must be updated before first use for reliable operation. Refer to the user guide for the firmware update procedure. Firmware download

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The Gauge Development Kit (GDK) is a complete evaluation system for any single-cell fuel gauge developed by Texas Instruments Incorporated.  The GDK is a single printed circuit board (PCB) equipped with a programmable load, programmable charger, an optional on-board fuel gauge and an integrated EV2400 for PC interaction via Battery Management Studio.  A USB PC cable, 6 V 2.5 A DC Jack (or equivalent power supply connection) and the latest version of Battery Management Studio is needed when using the GDK. 

Once the GDK is connected to a PC via USB cable, Battery Management Studio will allow the user to do the following:

  1. Read the connected fuel gauge data registers.
  2. Configure the connected fuel gauge.
  3. Discharge and/or charge the connected battery.
  4. Log cycling data for evaluation and performance. 
  5. Automate learning cycles. 
  6. Evaluate the overall functionality of the connected fuel gauge under different charge and discharge conditions. The latest Windows™ – based PC software can be downloaded from the product folder on the Texas Instruments Web site.

  • Complete evaluation system for connected fuel gauge with clean and easy setup.
  • Integrated EV2400 for PC interface and downloadable software that can be used for data logging and analysis.
  • Automated Learning Cycles
  • Programmable on-board load and charger
  • Automated cycling with customizable profiles.
  • Programmable load capable of constant current, constant power and pulsed load discharges.

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Gauge Development Kit (GDK)


Pricing may vary.

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TI's Standard Terms and Conditions for Evaluation Items apply.

Technical Documents
User guides (2)
Title Type Size (KB) Date
PDF 20952 09 Feb 2015
PDF 20877 01 Aug 2013
More literature (2)
Title Type Size (KB) Date
PDF 38 02 Jan 2019
PDF 5420 14 Apr 2014

Software (1)

Name Part Number Software Type
Battery Management Studio (bqStudio) Software  BQSTUDIO  Application Software & Frameworks 

Design Kits & Evaluation Modules  ( 2 )

Name Part Number Tool Type
BQ27421EVM-G1B System-Side Battery Fuel (Gas) Gauge Evaluation Module  BQ27421EVM-G1B  Evaluation Modules & Boards 
System-Side Fuel (Gas) Gauge Dynamic Voltage Correlation Evaluation Module  BQ27621EVM-G1  Evaluation Modules & Boards 

TI Devices (2)

Part Number Name Product Family
BQ27421-G1  System-Side(tm) Fuel Gauge With Integrated Sense Resistor | Battery Gas Gauge  Battery management 
BQ27621-G1  System-Side Fuel Gauge with Dynamic Voltage Correlation, Battery Gas Gauge  Battery management 

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