E. Preston (Electrical) Ltd, approved and trusted supplier of electrical components and an official distributor for top brands
UK Next Day Delivery
Expert Advice
No Min Order Charges
Technical Support
Flexible Payment Terms
Over 40 Years Experience
Why choose E. Preston Electrical?
Official Distributor For Top Brands
We introduce our company as a specialist distributor of electrical and electronic components.
We are an official authorised distributor of ABB, Adaptaflex, Arcolectric, BDC Electronics, Bulgin, Bussmann, Cherry, Chint, CML, Crouzet, Crydom, Cynergy3, Eaton, Entrelec, Essen, E-T-A, Finder, Honeywell, Hylec, IDEM, Johnson Electric/Saia-Burgess, Kraus & Naimer, Moeller, Sensata, Schaffner, Schurter, Scolmore, Tranilamp, Werma, Wieland and ZF. We are fully franchised for their complete ranges of switches, contactors, neons, timers and relays; buying directly from the manufacturer and selling at all of the manufacturers’ price breaks.
We also supply components from many other well known brands and our expert team can help you to find hard to source items and available stock. More details are available on our company line card.
There are no minimum order charges unless imposed upon ourselves by the manufacturer. We are very easy to deal with and will quickly open a credit account for regular business. We have the facility to accept payments by credit or debit card. Our telephone lines lead directly into the sales office, thus avoiding possible frustrating delays whilst you wait to be put through to someone. We maintain good stock, have the expertise to advise on applications or equivalents, keep promises (including phoning back) and dispatch the same day we receive your order via 24 hour courier service. Out of stock items are dispatched the same day we receive them. We can also supply Certificates of Conformance as required.
Approved & Trusted
We are registered as an ISO 9001:2015 approved stockist and supplier, registration number RS 10581. We are also an MOD approved supplier, registration number 3EVP01.
All of the national wholesaler groups buy from us, and we ask that you look through the information about our company to see if you would benefit from using us. We are happy to quote against equivalent RS and Farnell references and we will do our utmost to prove our claims.
Honeywell BES 24V - An extension of the Honeywell Battery Safety Sensor Portfolio First Vent Detection | Rate of Change Algorithm | Automotive Grade | 12V & 24V Options
Honeywell has released its 24V Battery Safety Electrolyte Sensor (BES), an extension of the previously launched BES Series. This product extension enables the seamless integration of the BES Series into high‑voltage battery packs that operate on 24V. The Honeywell battery safety sensor portfolio is designed to enhance safety in lithium‑ion, on‑road, and stationary battery applications.
The Battery Safety Electrolyte Sensor (BES) is an automotive-grade sensor designed for early detection of venting and thermal runaway in battery systems. Utilizing an advanced and patented rate of change algorithm, the BES detects battery electrolyte vapor commonly released during the initial venting phase called First Vent, as well as hydrogen and carbon monoxide gases released during a thermal runaway event.
The ability to detect the First Vent provides an essential early warning for potential thermal runaway incidents in Lithium-Ion battery packs. This proactive early detection facilitates timely and appropriate mitigation measures, significantly reducing the risk of thermal runaway. BES employs a patented advanced rate of change algorithm designed to identify significant changes in the concentration of target gases within a sealed battery pack. This innovative method effectively reduces the occurrence of false negatives that may be seen with conventional ppm-based sensors, which focus on precise target gas threshold monitoring. The algorithm is tuned to prevent false positives, improving the end-user experience. Furthermore, the algorithm is supported by more than 12 years of rigorous research and validated through seven years of practical field deployment.
This extensive experience not only enhances the reliability of the detection algorithm but also underscores its effectiveness in real-world applications. BES enhances the safety and reliability of automotive battery systems.
Sensing:
Battery electrolytes
Hydrogen
Carbon monoxide
Humidity (customizable upon request)
Pressure (customizable upon request)
Temperature
Features:
Responsive to battery electrolyte vapor released during the first vent (before thermal runaway)
Responsive to hydrogen and carbon monoxide released during thermal runaway
12V and 24V supply voltage options
Patented rate of change algorithm to mitigate false negatives
Resistant to siloxane poisoning
Compatible with all Lithium-ion battery chemistries and cell types
Automotive product with CAN 2.0B output with diagnostic features
Tested for performance life of 15 years
Applications: Sealed lithium-ion battery packs or modules used in
Electric Vehicles
Hybrid Vehicles
Other On-Road Applications
Value to Customers:
Enhanced Asset Protection: Battery electrolyte vapor monitoring provides early warning of thermal events, enabling thermal runaway prevention and asset preservation
Reliable Battery Health Monitoring: BES responds to multiple gases that are typically released during thermal runaway, therefore increasing detection reliability and reduces false negatives
Ease of Integration: The rate of change algorithm eliminates the need for precise target gas threshold testing and validation. As a result, it significantly reduces integration costs and timeline
Coin cell supercapacitors are compact electrochemical energy storage devices with a high capacity that can quickly store and release electrical energy. Compared to conventional batteries, they offer several advantages, including high power density, a long cycle life, and fast charge and discharge rates.
Power density describes how quickly an energy storage device can release or absorb energy. This is important for applications requiring short-term high energy outputs, such as starting an engine. Supercapacitors have a high power density, which enables them to provide energy quickly. Energy density indicates how much energy a storage device can hold over a longer period. A high energy density is essential for applications requiring a continuous energy supply.
The new coin cell supercapacitors from Schurter are available for horizontal mounting (SCCA) or vertical mounting (SCCC). They can be used in systems with a voltage of up to 5.5 V and have a capacitance value ranging from 100 to 1,500 mF.
Schurter's new coin cell supercapacitors are used in a variety of applications, including backup power supplies, electronic devices, renewable energy systems and medical devices. While they are most commonly used for real-time clock backup, they can also be used for memory backup, battery swap ride through and LED or audible alarms.
