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Page | 005 TESLA BATTERY EMERGENCY RESPONSE GUIDE
3.2. Hazards Associated with Mechanical Damage
Mechanical damage to Tesla Energy Products can result in a number of hazardous conditions (discussed below) including:
• Leaked battery pack coolant (see Section 3.4)
• Leaked refrigerant (Powerpack System and Megapack only, see Section 3.5)
• Leaked cell electrolyte (see Section 3.6)
• Rapid heating of individual cells due to exothermic reaction of constituent materials (cell thermal
runaway), venting of cells, and propagation of self-heating and thermal runaway reactions to
neighboring cells.
• Fire
To prevent mechanical damage to Tesla Energy Products, these items should be stored in their original packaging when not in use or prior to being installed (see Section 6 below).
3.3. Hazards Associated with Elevated Temperature Exposure
The Tesla Powerpack system and Powerwall are designed to withstand operating ambient temperatures up to 50°C (122°F), with up to 100% operating humidity (condensing), and storage temperatures up to 60°C (140°F) and <95% relative humidity (non-condensing) for up to 24 hours without affecting the health of the unit.
Prolonged exposure of Tesla Energy Products to temperatures beyond that can drive battery cells into thermal runaway and result in a fire. Exposure of battery packs to localized heat sources such as flames could result in cell thermal runaway reactions and should be avoided.
3.4. Hazards Associated with Leaked Coolant
Thermal management of Tesla Energy Products is achieved via liquid cooling using a 50/50 mixture of ethylene glycol and water. A typical Powerpack battery unit includes about 26 L of coolant (Powerpack 2/2.5) or about 22 L of coolant (Powerpack 1). A typical Powerwall unit includes about 1.6 L of coolant (Powerwall 1) or about 2.3 L of coolant (Powerwall 2). The Tesla Inverter (fully populated) includes about 11 L of coolant. A typical Megapack includes about 540 L of coolant. Mechanical damage of a Tesla Energy Product that has been installed could result in leakage of the coolant. The fluid is blue in color and does not emit a strong odor.
For information regarding the toxicological hazards associated with ethylene glycol, as well as ecological effects and disposal considerations, refer to the specific Safety Data Sheet (SDS) for battery coolant. Extended exposure of a Tesla Energy Product to leaked coolant could cause additional damage to the product such as corrosion and compromise of protection electronics.
3.5. Hazards Associated with Leaked Refrigerant (Powerpack and Megapack only)
The Powerpack and Megapack thermal management system includes 400 g and 7.6 kg respectively of R134a: 1,1,1,2-Tetrafluoroethane refrigerant in a sealed system. Mechanical damage of a Powerpack or Megapack could result in a release of the refrigerant. Such a release would appear similar to the emission of smoke.
For information regarding the toxicological hazards associated with R134a, as well as ecological effects and disposal considerations, refer to the specific Safety Data Sheet (SDS) for R134a.
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