Published November 9, 2025
EV Battery Recalls: Thermal Runaway and Charging Defects
Electric vehicle battery recalls represent one of the most significant emerging safety categories in the automotive industry. Battery thermal runaway — where a battery cell overheats and ignites in a self-sustaining chain reaction — has triggered several high-profile recalls, while charging system defects add another dimension to EV battery safety.
Understanding Thermal Runaway
Thermal runaway occurs when a battery cell reaches a temperature where exothermic chemical reactions become self-sustaining, causing the cell to heat rapidly, potentially igniting and spreading to adjacent cells. The result can be a fast-moving fire that is extremely difficult to extinguish with conventional methods. While statistically rare, the severity of battery fires makes them a top priority for NHTSA and manufacturers.
Notable EV Battery Recalls
The Chevrolet Bolt EV recall is the most prominent battery recall to date. GM recalled approximately 142,000 Bolt EVs and Bolt EUVs after battery fires were linked to defective cells manufactured by LG Energy Solution. The recall required replacing every battery module — a complex repair costing GM approximately $2 billion. Hyundai's Kona Electric also faced a significant battery recall for similar thermal runaway risks.
Charging System Defects
Beyond the battery cells themselves, charging system defects represent a growing recall category. These include onboard charger overheating during Level 2 charging, ground fault detection failures that could create shock hazards, software bugs that allow overcharging or unbalanced cell charging, and DC fast charging compatibility issues that can damage battery cells. As the EV market grows and charging infrastructure expands, these defects are likely to increase.
Battery Management System Software
The battery management system (BMS) software is critical for preventing thermal runaway. BMS software monitors cell temperatures, voltage levels, and state of charge, and controls cooling system operation. Defects in BMS software can allow cells to operate outside safe parameters. Software updates to the BMS have been a common recall remedy for addressing battery safety concerns.
Battery Fire Response
EV battery fires burn differently than gasoline fires and require specialized firefighting techniques. They can reignite hours or even days after apparent extinguishment. Some fire-related recalls include specific instructions about parking the vehicle outside and away from structures until the recall is repaired, because a battery fire in a garage can damage or destroy the structure.
What EV Owners Should Know
Check your EV for battery-related recalls at NHTSA.gov/recalls. Follow manufacturer guidance on charging practices. If you notice unusual battery behavior — unexpected capacity loss, charging interruptions, unusual heat, or warning messages — have the vehicle inspected promptly. Visit our recall rankings for EV-specific safety data.
Frequently Asked Questions
While extremely rare, battery fires during charging have occurred and are one of the defect types addressed by EV battery recalls. Follow manufacturer charging guidelines, use approved charging equipment, and repair any battery-related recalls promptly to minimize risk.
It varies significantly. A software update to the battery management system may take 1-2 hours. A full battery module replacement — as required in the Chevrolet Bolt recall — can take several days due to the complexity of the repair and the need for specialized equipment.
Check the specific recall instructions. Some battery recalls recommend limiting charging to 90% capacity, avoiding charging overnight or in enclosed spaces, or parking the vehicle outside until the recall is repaired. Follow the manufacturer guidance in the recall notice.