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Battery Safety Sensors

BES LITE Series

BES LITE is a cost-effective, low-profile, light-weight battery safety detector that uses Honeywell proprietary gas sensing technology to selectively detect battery electrolyte vapor, an indicator of thermal events.

Overview
BES LITE and BES LITE-BM
Distributor Inventory

BES LITE, the Battery Safety Electrolyte Detector, is designed to detect gases that are typically released during the initial phase of thermal runaway as well as throughout the entire thermal runaway process. This advanced detection capability facilitates the prompt identification of imminent dangers or risks, significantly enhancing safety measures in critical situations. Therefore, the sensor allows for proactive responses that can prevent loss of assets and protection of lives.
Early detection may vary based on factors such as the nature of cell abuse and its severity, state of charge, and other variables. BES LITE allows compliance with international regulations and guidance by providing a deterministic detection of thermal runaway events.

FEATURES
• Detects initial venting events before thermal runaway
• Provides early warning of thermal runaway events
• Selectively responds to electrolyte vapor
• Intrinsically safe with no internal heating element
• Inbuilt diagnostics functionality
• Low-profile, compact design
• Three-state analog output
• Customizable to specific application needs
• Compatible with all Lithium-ion battery chemistries and cell types
• Ten-year sensor life
• Resistant to common contaminants
• Highly resistant to siloxane poisoning
• Optimized for industrial applications

DIFFERENTIATION
Early Thermal Runaway Detection: BES LITE is designed to detect gases commonly released during the initial phase of lithium-ion battery cell breakdown. This early detection allows for the timely implementation of safety mitigation actions, ensuring that appropriate measures can be taken to address potential hazards before they escalate
• Selective response to battery electrolyte vapor: BES LITE’s selective response to battery electrolyte vapor significantly reduces the risk of false alarms, making it ideal for use in environments where interference gases may be present 
• Efficient & safe design: BES LITE employs simple electronics for easy integration and minimal power consumption. Unlike other gas sensing technologies, it operates without an internal heating element, making it ideal for explosion-proof environments and applications requiring extended battery life
• Agnostic to Li-Ion chemistry & battery type: Works with various Li-ion battery types including prismatic, pouch & cylindrical, as well as different chemistries such as NMC, LFP, LTO, and more. 

VALUE TO CUSTOMERS
 • Enhanced asset protection: Battery electrolyte vapor detection enables early detection of thermal events, allowing enhanced asset protection 
• Selective detection: Detects only electrolyte vapor. The selective response and high sensitivity to electrolyte vapor allows for the mitigation of false alarms 
• Reliability in critical environments: Resistant to cross-gas interference & siloxane poisoning, ensuring reliable performance across demanding environments 
• Ease of installation: The low-profile construction and mounting flanges (flange-mount version) or mounting pins (board-mount version) enable installation even in tight spaces. The 3-state output simplifies integration 

APPLICATIONS
Sealed and portable lithium-ion battery modules used in 
• Battery Energy Storage Systems (BESS)
• UAM/UAV
• Micro-mobility
• Medical devices
• Light industrial goods
Data Sheet
Name
Description
File Size
Date
Size
BES LITE-BM Datasheet
application/pdf 424.59 KB
5/30/2025
424.59 KB
BES LITE Datasheet
application/pdf 345.09 KB
5/30/2025
345.09 KB
Installation Instructions
Name
Description
File Size
Date
Size
BES LITE-BM Installation Instructions
application/pdf 372.93 KB
5/30/2025
372.93 KB
application/pdf 884.77 KB
1/16/2025
884.77 KB
Brochure
Name
Description
File Size
Date
Size
Sensing and Safety Solutions for Electrification Brochure
application/pdf 1.47 MB
7/2/2025
1.47 MB
Application Note
Name
Description
File Size
Date
Size
Sensors and Switches For Forklift Applications App Note
application/pdf 3.87 MB
5/22/2025
3.87 MB
Others
Name
Description
File Size
Date
Size
BES LITE-BM 3D CAD
application/zip 1.25 MB
6/11/2025
1.25 MB
Thermal Runaway Test Guidelines
application/pdf 2.46 MB
6/4/2025
2.46 MB
Battery Energy Storage Systems (BESS) store and manage energy, ensuring reliability, efficiency, and integration with renewable sources.
application/pdf 2.92 MB
6/3/2025
2.92 MB
This infographic provides a clear overview to help address common questions and objectives when discussing Honeywell Battery Safety Electrolyte Detectors with customers.
application/pdf 304.64 KB
2/11/2025
304.64 KB
BES LITE 3D CAD
application/zip 860.91 KB
5/30/2025
860.91 KB
Name
Description
File Size
Date
Size
Sensors and Switches For Forklift Applications App Note
application/pdf 3.87 MB
5/22/2025
3.87 MB
BES LITE-BM 3D CAD
application/zip 1.25 MB
6/11/2025
1.25 MB
BES LITE-BM Installation Instructions
application/pdf 372.93 KB
5/30/2025
372.93 KB
Thermal Runaway Test Guidelines
application/pdf 2.46 MB
6/4/2025
2.46 MB
BES LITE-BM Datasheet
application/pdf 424.59 KB
5/30/2025
424.59 KB
Sensing and Safety Solutions for Electrification Brochure
application/pdf 1.47 MB
7/2/2025
1.47 MB
Battery Energy Storage Systems (BESS) store and manage energy, ensuring reliability, efficiency, and integration with renewable sources.
application/pdf 2.92 MB
6/3/2025
2.92 MB
application/pdf 884.77 KB
1/16/2025
884.77 KB
This infographic provides a clear overview to help address common questions and objectives when discussing Honeywell Battery Safety Electrolyte Detectors with customers.
application/pdf 304.64 KB
2/11/2025
304.64 KB
BES LITE Datasheet
application/pdf 345.09 KB
5/30/2025
345.09 KB
BES LITE 3D CAD
application/zip 860.91 KB
5/30/2025
860.91 KB
Showing 1 to 1 of 1 parts
Product Number
Part Number
Description
Leaf Category
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BESL-10100-000
Battery Safety Electrolyte Detector - Flange Mount Version. Operating temperature range -20°C to 70°C. 5V supply voltage. Three-State Analog output.
https://honeywell.scene7.com/is/image/Honeywell65/hon-ia-hss-battery-safety-bes-lite-bes-bm-group
BESL-10100-000
Battery Safety Electrolyte Detector - Flange Mount Version. Operating temperature range -20°C to 70°C. 5V supply voltage. Three-State Analog output.
https://honeywell.scene7.com/is/image/Honeywell65/hon-ia-hss-battery-safety-bes-lite-bes-bm-group
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