Tesla Battery Overheating: What the Official Records Say

If Your Home Battery Got Hot, Smoked or Caught Fire: How Overheating Happens

A lithium-ion battery stores energy in many small cells, and each cell gives off some heat as it charges and discharges. Normal warmth is expected. Overheating is heat that builds past the range the cell was built to handle.

The most serious form is thermal runaway, a self-reinforcing heat cycle inside a lithium-ion cell. Heat triggers chemical reactions that release more heat, which triggers more reactions. The cycle can produce smoke, fire or an explosion, and heat from one cell can reach the cells next to it. The site's page on lithium battery thermal runaway walks through that process step by step.

Most rechargeable battery products rely on a battery management system, the electronic system that monitors cell temperature, voltage and charge to keep the battery within safe operating limits. When it works, it can slow charging, cut power or shut the unit down before heat becomes dangerous. When it fails, a problem in a cell may go unchecked.

In general terms, overheating can come from a flaw in a cell, a failure in the battery management system, physical damage such as a crush or puncture, charging conditions outside what the product was designed for, or variation in how individual units were made. More than one can be present at once, and none can be assumed from the fact of a fire alone.

If you are trying to understand what went wrong, that distinction is where it starts. A battery that was warm during heavy use and a battery that smoked while sitting idle raise very different questions. Where the heat started, what the product was doing at the time and whether the safety electronics responded are often the facts that later decide which of these causes is even in play, and which company's role it points to. A conversation with our attorney can help sort out what those facts may show in a particular event.

What the Official Records Say About Tesla Products

The record behind this page is CPSC recall 26-092, published by the U.S. Consumer Product Safety Commission under the title "Tesla Recalls Powerwall 2 AC Battery Power Systems Due to Fire and Burn Hazards; Risk of Serious Injury or Death." The CPSC recall notice gives a recall date of November 13, 2025. This section reports the notice only in its own terms.

The notice names the product as "Certain Tesla Powerwall 2 AC Battery Power System." It describes these as "fully-integrated AC battery systems used for energy storage for self-consumption, time-based control, and backup power," and says the model number "Powerwall 2" is printed on the nameplate label on the side of the unit. The notice states the hazard in these words:

"The lithium-ion battery cells in certain Powerwall 2 systems can cause the unit to stop functioning during normal use, which can result in overheating and, in some cases, smoke or flame and can cause death or serious injury due to fire and burn hazards."

The notice lists about 10,500 units and a remedy of "Replace." It states that consumers "should ensure their Powerwall 2 system is online and check the Tesla App for a notification about whether their unit is included in the recall," and that "Tesla has remotely discharged (or removed energy from the battery of) affected Powerwall 2 systems that are online, to prevent overheating, until the replacement is installed." It labels the action a "Fast Track Recall."

On incidents, the notice states: "The firm has received 22 reports of overheating, including six reports of smoking and five reports of fire, resulting in minor property damage. No injuries have been reported." It says the units were sold at Tesla.com/powerwall and through certified Tesla installers nationwide from November 2020 through December 2022, and lists the manufacturer as Tesla, Inc., of Reno, Nevada.

A recall is a safety action announced with the CPSC to address a product hazard, usually by repair, replacement or refund. It is not a finding that the product injured anyone, and it is not a finding that the manufacturer is liable to anyone. Under 16 C.F.R. § 1115.4, a firm decides whether to report a possible defect to the Commission based on information that "reasonably supports" that conclusion; reporting and recalling are steps in a safety process, not a court's judgment.

The notice applies to the specific Powerwall 2 units it covers. It does not describe other Tesla products, and it does not establish that any particular fire or injury was caused by a recalled unit. If you are trying to match your own unit against a notice, the site's guide to lithium battery recall lookup explains how to read the fields. Other brand pages, such as Apple battery overheating, report their own records the same way.

What People in This Situation Usually Gather

When a battery product overheats and someone is hurt or a home is damaged, a handful of records tend to carry most of the weight later. If you were hurt, these usually include medical records from the emergency room, a burn unit or follow-up care, which document the injuries and how they were treated.

Photos and video often come next: the product, the scorch marks, the room or garage and the surrounding damage. People also often have the product itself, or what remains of it, along with packaging, labels and the nameplate. For a home battery, the model and serial information on the label is how a unit is matched against a recall notice; the CPSC notice described above points to the nameplate on the side of the unit for that reason.

Proof of where and when the product was obtained also tends to matter, whether a receipt, an order history, an installer's invoice or a contract. These documents connect a specific unit to the companies that made, sold or installed it.

Reports made at the time are another category. Fire department reports, police reports and insurance claim records describe what responders saw, and a fire report may note where a fire started. The names and contact details of anyone who saw the event, including neighbors and responders, are often part of the record too. People also often keep their communications with the manufacturer, seller or installer: app notifications, emails, support tickets and letters about a recall or a replacement, which can show what a company told an owner and when.

Each record answers a different question: what happened, to whom, with which unit, and who stood in the chain that brought it into the home. For someone in this position, what is at stake is that a product discarded or a label lost may leave one of those questions without an answer. Which records matter most depends on the facts, and a conversation with our attorney can cover what records exist in a situation like yours and what each one shows.

Who May Be Responsible When a Battery Product Overheats

Product liability is the area of law that addresses whether a product's manufacturer, importer, distributor or seller may be responsible for harm the product caused. It looks at the product and the chain of companies that brought it to the person who used it.

If you are asking whether a battery that overheated was defective, the law generally sorts the answer into three kinds of defect, and each points to a different question about your unit. A design defect means the product's design itself is unsafe, so every unit built to that design carries the risk. A manufacturing defect means a specific unit was made incorrectly and differs from what the design intended. A warning defect means the product lacked adequate instructions or warnings about a known risk. The federal regulation at 16 C.F.R. § 1115.4 reflects the same ideas for safety reporting: it describes a defect as "a fault, flaw, or irregularity that causes weakness, failure, or inadequacy in form or function," and says one "can also occur in a product's contents, construction, finish, packaging, warnings, and/or instructions."

Federal law also sets duties that come before any lawsuit. Under 15 U.S.C. § 2064, every manufacturer, distributor and retailer of a consumer product who "obtains information which reasonably supports the conclusion that such product" contains a defect that could create a substantial product hazard, or "creates an unreasonable risk of serious injury or death," generally must "immediately inform the Commission," unless it knows the Commission has already been adequately informed. That duty is about reporting to a regulator; it does not decide whether anyone is responsible to an injured person.

Many cases also involve negligence. For someone who was hurt, negligence turns on four questions about a company's conduct: whether a party owed a duty of care, whether it breached that duty, whether the breach caused the harm, and whether there were damages. A defect claim instead asks whether the product was defective and whether the defect caused the injury.

By role, the parties a claim may look at include a manufacturer, which may be a battery cell maker or the company that built the finished product; an importer; a distributor; a retailer; and a repairer or installer who worked on the unit. Each role carries different questions about what that party controlled, which is why the purchase and installation records described above can matter.

Whether any of these elements is met depends entirely on the facts. An overheating event, a fire or an injury does not by itself prove a defect or anyone's fault. If you are trying to sort out which roles may be involved in what happened to you, you may want to consider requesting a case evaluation, which is a conversation with our attorney about what happened. The site's page on lithium battery injury claims explains these elements further.

How the State Where It Happened Shapes a Battery Overheating Claim

Most product liability and personal injury claims in the United States are decided under state law, not federal law. The federal recall rules above govern safety reporting and recall notices. The rules about who may sue, when and for what generally come from the state where the injury happened, and they differ from one state to the next. California is one state among fifty.

The first rule people usually ask about is the statute of limitations, the deadline within which a claim must be filed. Once it runs, a claim may be barred, which is what makes it significant for anyone weighing whether to look into what happened. The length of that period, when it starts to run and what exceptions may pause it all vary by state, and some states add other time limits specific to products. This page does not state any state's period.

Fault rules also affect what a person may recover. If questions arise about how a battery was charged or stored, comparative fault rules may reduce a person's recovery by their own share of fault; some comparative fault states also bar recovery once that share passes a certain point. Under contributory fault, followed in some states, a person found at fault at all may be barred from recovering.

Damages rules also come from state law. The categories a state's law may allow can include medical expenses, lost income, pain and suffering and property damage, and some states place limits on certain categories.

When someone dies, a wrongful death claim may be involved: a legal claim brought by surviving family members when a person dies as a result of another party's conduct. Who may bring it, what it may cover and the deadline that applies are set by each state's own statute.

For a family after a fire, or a person hurt by a home battery, these rules shape what is possible long before the facts are argued. A conversation with our attorney can help clarify which state's rules may apply to where and how an injury happened.