CSL Group: How to Stop Thermal Runaway in EV Chargers

As electric vehicle (EV) fleets grow, so do the risks associated with large-scale charging hubs. Fires caused by battery overheating are rare, but when they do occur, they escalate quickly and can be very challenging to extinguish once started in EVs – this is what we call Thermal Runaway.

That’s why early detection is critical. CSL’s thermal-imaging and signalling camera solution can ensure you’re always one step ahead. With our always-on mission- critical connectivity, sites gain valuable time to act before ignition and other damages to your premises occurs.

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Hidden dangers. No second chances.

Understanding EV Fire Risks at Charging Hubs

Left charging overnight, electric vehicles can overheat without warning, especially during trickle charging. These events are rare, but devastating.

Read our research article to understand the Fire Risks Posed by Electric Vehicles to Buildings and Car Parks.

Discover the Research

Faster Response. Safer Sites.

Fires from EV batteries behave differently. They build slowly, often invisibly, and then escalate within minutes. If left undetected, the consequences can be severe — to assets, infrastructure, and people.

That’s why more fleet operators are deploying thermometric cameras to spot early warning signs before ignition. But these systems are only effective when they’re connected, live, alerting, and always on.

The risks go far beyond a single overheating battery.

• Trickle charging increases overheating potential, even after a full charge
• Fire suppression and alarm systems only activate after ignition
• Sites are often not monitored by staff with EV-specific safety training.

With CSL, you get more than detection, you get action

We work with camera and fire safety experts to deliver full-site visibility and automated protection. Here’s how our connected solution keeps your charging infrastructure safe:

• Detect Early. Act Fast.

Thermal imaging spots overheating before ignition starts, giving you a critical window to prevent disaster.

• Connected for Guaranteed Response

With CSL’s dual-path connectivity, alerts are delivered instantly — even in remote depots or during network outages.

• Automate Your Fire Prevention

From cutting power to triggering alarms and notifying monitoring centres, our connected solution turns detection into immediate action.

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About CSL Group

CSL was founded by Simon Banks in 1996, as a UK alarm signalling provider. Today, we have over 2 million managed connections supporting mission-critical IoT applications across Europe, and we are continuing to grow and innovate.
We connect, manage and secure the Internet of Things. The world of Critical Connectivity is ever changing. We're constantly developing, evolving and transforming our platforms and services to bring our customers more powerful connected solutions.