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Shimnit New Fire

+91-22-22795400
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+91-22-22795400

info@shimnitnewfire.com

+91-22-22795400
info@shimnitnewfire.com
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Automatic Fire Safety System for EV Buses

Fire Safety Solutions for
Electric Vehicles

LITH+ and AERO+ advanced fire suppression engineered for EV battery compartments

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As electric vehicles become the future of mobility, protecting battery compartments from fire risk is critical. SNF offers two purpose-built solutions – SNF LITH+, a liquid wetting agent for large-format EV battery systems, and SNF AERO+, India’s aerosol-based suppression device designed to be permanently installed inside individual battery compartments. Both systems integrate with AIS-135 approved Fire Detection & Alarm Systems and are engineered for reliability across the EV ecosystem.

FDAS & FDSS FOR LITHIUM-ION BATTERY

AERO+ is India’s aerosol-based fire suppression solution, purpose-built to be installed inside EV battery compartments. A single 500g AERO+ device protects up to 5 m³ – with no tubing, no pressurised cylinders, and zero ongoing maintenance. Fully tested to EN 15276-1:2019 and EN 15276-2:2019 international standards and RDSO approved, AERO+ integrates seamlessly with AIS-135 approved Fire Detection & Alarm Systems.

Fire Strobe Siren

  • Loud audible alert (90dB) for immediate evacuation
  • Bright strobe light enhances visibility in smoke or low light
  • EMI/EMC Certified

Control Panel

  • Automatically triggers suppression on abnormal temperature rise
  • Compatible with up to three zones
  • EMI/EMC Certified

Heat Linear Cable

  • Activates at 138 °C, triggering suppression within 10 seconds
  • Reliable under vibration, thermal cycling, and harsh conditions
  • UL Approved

Aerosol Device

  • Seamless FDAS integration
  • EN 15276 tested & compliant
  • Multizone coverage
  • RDSO approved
  • Compact & maintenance-free
  • Clean discharge
Bus+ + + +
Tested and engineered as an advanced wetting agent, SNF LITH+ ensures rapid cooling, deep cell penetration, and effective prevention of re-ignition. It is non-damaging to both high-voltage battery systems and sensitive electronics, offering safe and reliable protection for electric mobility.

Fire Strobe Siren

  • Loud audible alert (90dB) for immediate evacuation
  • Bright strobe light enhances visibility in smoke or low light
  • EMI/EMC certified

Control Panel

  • Automatically triggers suppression on abnormal temperature rise
  • Compatible with upto three zones
  • EMI/EMC Certified

Heat Linear Cable

  • Activates at 187°C, triggering suppression within 10 seconds
  • Built to endure vibration, heat cycles and harsh engine conditions.
  • UL Approved

Wetting Agent-FDSS LITH+

  • Low pressure mist discharge at 9-10 bar for deep and even coverage 
  • 1-2 minute spray ensures sustained suppression and cooling
  • Thinning under pressure to reach between tightly packed cells
Bus + + + +

Explain how the system works?

01
Fire Detection

The Linear Heat Detection (LHD) cable senses abnormal heat in the battery pack and triggers the fire detection system when temperatures exceed a set threshold.

02
Fire Alarm Activation

The control panel displays a fire indicator for the battery compartment, and the buzzer alarm sounds to alert the operator.

03
Alarm Acknowledgment

The alarm will continue to sound until the operator presses the “accept” button on control panel to silence it.

04
Automatic Suppression Activation

The suppression system automatically activates when the LHD cable detects a temperature rise, releasing SNF LITH+ or AERO+, a lithium-ion battery fire suppressant.

05
Manual Activation (If Automatic Fails)

If the system fails to activate automatically, the operator can manually release SNF LITH+ or AERO+ by pressing the control panel button or pulling the pin on the cylinder to open the solenoid valve.

06
Error or False Alarm Handling

In case of a false alarm or error, the operator can silence the alarm by pressing the "accept" button, correct the issue, and press the "reset" button to restore system functionality.

Explain how the system works?

01

Fire Detection

The Linear Heat Detection (LHD) cable senses abnormal heat in the battery pack and triggers the fire detection system when temperatures exceed a set threshold.

02

Fire Alarm Activation

The control panel displays a fire indicator for the battery compartment, and the buzzer alarm sounds to alert the operator

03

Alarm Acknowledgment

The alarm will continue to sound until the operator presses the “accept” button on control pannel to silence it

04

Automatic Suppression Activation

The suppression system automatically activates when the LHD cable detects a temperature rise, releasing SNF LITH+ or AERO+, a lithium-ion battery fire suppressant

05

Manual Activation (If Automatic Fails)

If the system fails to activate automatically, the operator can manually release SNF LITH+ or AERO+ by pressing the control panel button or pulling the pin on the cylinder to open the solenoid valve.

06

Error or False Alarm Handling

In case of a false alarm or error, the operator can silence the alarm by pressing the “accept” button, correct the issue, and press the “reset” button to restore system functionality.

SVF AERO+ Logo
SVF AERO+

Feature

SVF LITH+ Logo
SVF LITH+
Aerosol-based - solid compound converts to aerosol on activation
Technology
Our advanced wet agent technology developed in collaboration with our Korean partners
EV buses, electric commercial vehicles, passenger EVs, and any enclosed battery compartments
Primary Application
EV buses, large battery packs, ESS, warehouses and EV charging infra
No tubing - direct aerosol discharge. Plug and protect
Installation
Requires tubing, nozzles and cylinder mounting
100g/250g/500 g
Device / Agent
4L/ 6L / 9L / 25L extinguisher sizes
Up to 5 m³ per 500g device. Customizable as per compartment size
Coverage Per Unit
Scalable - based on volume and flow rate
Automatic thermal activation + FDAS integration (AIS-135)
Activation
Manual or integrated with FDAS (AIS-135)
Non-pressurised design
Pressure
Pressurised system
10-year product life, zero maintenance
Product Life
10-year shelf life
Clean discharge - no harmful residue, safe for BMS
Electronics Safety
Non-corrosive formula
EN 15276-1:2019  |  EN 15276-2:2019  |  RDSO Approved
Certifications
ARAI tested and BIS approved, rated for Class A / B / F fires
Permanently installed protection inside individual battery compartments
Best Suited For
Large-format EV battery fires, bus fleets, first responders and ESS installations

Frequently Asked Questions

What is the purpose of the FDAS & FDSS system for EVs?

FDAS (Fire Detection & Alarm System) and FDSS (Fire Detection & Suppression System) are designed to detect and suppress lithium-ion battery fires in electric buses. These systems ensure quick response, deep penetration, and prevent thermal runaway or re-ignition.

The system uses SNF LITH+, a specially engineered wetting agent for lithium-ion batteries. It vaporizes at ~200–250 °C, rapidly absorbs heat, and interrupts thermal runaway.
  • Penetrates deep into enclosed battery packs
  • Prevents re-ignition and thermal runaway
  • Safe for high-voltage and sensitive electronics
  • Leaves minimal, non-corrosive residue
  • Performs well in high-temperature and vibration environments

Yes. Key components such as the control panel, strobe siren, and LHD cable are EMI/EMC certified and UL approved, ensuring reliable operation under extreme automotive conditions.

The linear heat cable activates at 187 °C, and the suppression system is triggered within 10 seconds, ensuring rapid and efficient containment.

LITH+ is a liquid wetting agent used to suppress fires in large-format EV battery systems — ideal for buses and energy storage installations. AERO+ is a compact aerosol device permanently installed inside individual battery compartments. It activates automatically on thermal detection, requires no tubing, and is designed for passenger EVs, light commercial vehicles, and enclosed battery spaces where conventional systems cannot operate.
AERO+ is fully tested to EN 15276-1:2019 and EN 15276-2:2019 international standards and is RDSO approved. It is compatible with AIS-135 approved Fire Detection & Alarm Systems. The product is manufactured by an ISO 9001:2015, ISO 14001:2015, and IATF 16949:2016 certified company.
Yes. AERO+ produces a clean aerosol discharge with no harmful residue, making it completely safe for sensitive electronic components and battery management systems.
No. AERO+ is a non-pressurised, maintenance-free device with a 10-year service life. Once installed, no ongoing servicing is required.