Defective Consumer Devices: Your Rights When a Product Is Dangerous
When a consumer device is alleged to be defective—overheating batteries, faulty sensors, or design flaws that cause injury—consumers may have rights under California’s strong product-liability and consumer-protection laws. Depending on the harm, that can mean an individual injury claim, a class action for widespread economic losses, or both. California applies strict liability to defective products.

What makes a product legally defective?
California recognizes three kinds of defects: a design defect (the product is unreasonably dangerous as designed), a manufacturing defect (it left the factory flawed), and a warning defect (inadequate instructions or safety warnings). Under strict liability, an injured user generally need not prove the manufacturer was careless—only that the defect existed and caused harm.
Individual claim or class action?
If a device physically injures you—a burn from an overheating battery, for example—you can bring an individual personal-injury claim for your medical bills, lost wages, and pain and suffering. When many consumers suffer the same economic harm (a device that fails as designed), a class action may be the vehicle to recover those losses collectively.
What to do if a product injured you
Keep the product and its packaging—do not discard, repair, or return it. Photograph the injury and the device, save proof of purchase, and preserve any recall notices. The physical device is the central evidence in a defect claim and must be available for expert inspection.
Injured and not sure what your claim is worth?
Get a Free ConsultationNo Win, No Fee · (213) 320-1001
Quick Reference
| Defect type | What it means |
|---|---|
| Design defect | Unreasonably dangerous as designed |
| Manufacturing defect | Left the factory flawed |
| Warning defect | Inadequate instructions or safety warnings |
Frequently Asked Questions
Can I sue if a consumer device injured me?
Yes. If a design defect, manufacturing defect, or inadequate warning caused your injury, you can bring a product-liability claim. California applies strict liability, so you generally need to prove the defect and causation, not carelessness.
What’s the difference between an injury claim and a class action?
An individual injury claim seeks compensation for your physical harm. A class action groups many consumers who suffered the same economic loss—such as a device that fails as designed—into one case.
What should I do with a device that injured me?
Keep it—do not discard, repair, or return it. Preserve the packaging, proof of purchase, and any recall notices, and photograph the injury. The device is the key evidence for expert inspection.
Written & legally reviewed by Compass Law Group partners

Joseph Shirazi
Managing Partner, Compass Law Group, LLP
California State Bar #265403 · Loyola Law School, J.D.
Joseph Shirazi is the Managing Partner of Compass Law Group, LLP, leading the firm’s personal-injury, catastrophic-injury, and wrongful-death trial practice. He authored the analysis on this page.
Profiles: Avvo · Super Lawyers · Justia · LinkedIn · CA State Bar · Full Bio →

Simon Esfandi
Partner & Co-Founder, Compass Law Group, LLP
California State Bar #275307 · Loyola Law School, J.D.
Simon Esfandi is a Partner and Co-Founder of Compass Law Group, LLP. He reviewed this page for legal accuracy. Compass represents California injury victims on a No Win, No Fee basis.
Profiles: Avvo · Super Lawyers · Justia · LinkedIn · CA State Bar · Full Bio →
Past results do not guarantee future outcomes. This article is legal information, not legal advice.
Injured and not sure what your claim is worth?
Get a Free ConsultationNo Win, No Fee · (213) 320-1001



