Page | 008 TESLA BATTERY EMERGENCY RESPONSE GUIDE
4. Firefighting Measures
NOTICE: In the event of a response to a Tesla product fire or hazardous event, contact Tesla immediately for technical guidance. Response should only be performed by trained professionals.
To create a significant fire in Tesla Energy Products, the enclosure of the battery unit needs to be subject to an extreme external event, such as direct exposure to a large prolonged fire or severe physical impact. A single cell thermal runaway does not propagate to neighboring cells as demonstrated in testing per UL and IEC standards. In the event of a fire, rigorous full-scale fire testing has shown that Tesla Energy Products perform in a safe and controlled manner, consuming themselves slowly without explosive bursts or unexpected hazards, and without propagating to neighboring enclosure units. These claims have been validated through large-scale fire testing, with available third-party reports.
Responding to a Venting Tesla Energy Product: Smoke emanating from a Tesla Energy Product can be an indication of an abnormal and hazardous condition. Battery thermal runaway fires are preceded by a period of smoke. The smoke is likely flammable and may ignite at any time. If fire or smoke is observed emanating from a Tesla Energy Product at any time, the following should be performed:
1. If possible, shut off the unit/system (see instructions below)
2. Evacuate the area
3. Notify appropriately trained first responders, the local fire department, and any appointed subject
matter expert (SME) if available
WARNING: When responding to a smoke or fire event with the Powerpack system, do not approach the Powerpack units from the front (door-side). Perform all incident response from the sides or rear of the unit.
How to Shut Off the Megapack, Powerpack System or Powerwall in an Emergency:
Megapack:
1. If an E-Stop button is present on the unit or close to the system, engage the E-Stop
2. Open the AC disconnect installed upstream of the system
3. Do not approach the Megapack and do not open any of its doors
Powerpack System:
1. If an E-Stop button is present on the unit or close to the system, engage the E-Stop
2. Open the AC disconnect installed upstream of the system
3. Open the DC disconnect switch on the inverter door (if the scene is safe)
Powerwall:
1. If an E-Stop button is present, engage the E-Stop
2. Open the AC disconnect installed upstream of the system
WARNING: Shutting off power to the Tesla Energy Product does not de-energize the battery, and a shock hazard may still be present.
The Tesla Energy Product should then be monitored for evidence of continued smoke venting. If a fire develops and visible flames appear, it is recommended to apply water spray to neighboring battery enclosures and exposures (defensive firefighting), rather than directly onto the burning unit. Applying water directly to the affected enclosure will not stop the thermal runaway event, as the fire will be located behind
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