January 14, 2026
A recent incident report details a significant safety concern with an Apple MacBook Pro 2019, where the device’s lithium-ion battery has swollen, causing the chassis to deform and internal components to become visible. The incident highlights the inherent risks associated with compromised lithium-ion batteries, including potential for fire and overheating.
Product Details
Incident Overview
On December 22, 2025, an incident was reported concerning an Apple MacBook Pro (2019) laptop. The user observed significant swelling of the device’s internal lithium-ion battery. This swelling was severe enough to cause the bottom case and top enclosure to visibly separate, leading to an outward bowing of the chassis. As a result, internal components of the laptop are now visible, and the device can no longer sit flat on a surface. The user noted that Apple Support advised discontinuing use if safety was a concern, acknowledging a potential hazard. The device is now deemed unsafe for use or charging due to the compromised battery.
Safety Concerns
Swollen lithium-ion batteries, as seen in this MacBook Pro incident, pose serious and immediate safety risks.
- Immediate Dangers: The primary concern is the risk of thermal runaway, which can lead to overheating, fire, and even explosion or rupture of the battery. The structural deformation of the laptop’s enclosure further exacerbates this risk by potentially damaging the battery cell membranes or internal circuitry, increasing the likelihood of a short circuit. A swollen battery can also exert pressure on other internal components, potentially damaging them and creating additional hazards.
- Long-Term Risks: Even if the battery does not immediately ignite, a swollen battery is unstable and can degrade further over time, increasing its risk profile. Continued use or charging of such a device significantly elevates the chance of a catastrophic failure.
- Who Might Be Affected: Anyone in proximity to the device, including the user, family members, or colleagues, is at risk from fire, smoke inhalation, or thermal burns.
- Property Damage Potential: A battery fire can rapidly spread, causing extensive damage to desks, furniture, homes, and other electronic devices nearby. The release of toxic fumes is also a concern.
What Consumers Should Do
If you own an Apple MacBook Pro 2019 or any other device and suspect your battery is swollen, take immediate action:
- Immediate Steps to Take:
1. Stop Using and Charging: Immediately cease using and charging the device. Do not attempt to turn it on or plug it in.
2. Do Not Puncture or Apply Pressure: Never attempt to puncture, squeeze, or apply pressure to a swollen battery. This can trigger a thermal event.
3. Handle with Care: Gently move the device to a non-flammable surface, away from combustible materials, and if possible, store it in a cool, dry place. Avoid leaving it unattended.
4. Do Not Dispose in Regular Trash: Swollen lithium-ion batteries are hazardous waste and should not be disposed of in household trash. Contact your local waste management facility for proper disposal instructions or take it to a certified electronics recycling center.
- How to Check if You Own the Affected Product: Visually inspect your MacBook Pro 2019. Look for any signs of the chassis bowing, the bottom case separating from the top enclosure, or the device not sitting flat on a surface. Even subtle changes can indicate battery swelling.
- Prevention Measures: While battery swelling can occur due to manufacturing defects or age, certain practices can help: avoid exposing your device to extreme temperatures, use only manufacturer-approved chargers, and avoid dropping or physically damaging your device. Regular software updates can also help optimize battery health management.
- Reporting Procedures: Report any similar incidents to Apple Support immediately. Additionally, file an incident report with the U.S. Consumer Product Safety Commission (CPSC) at SaferProducts.gov to help track product safety issues.
Manufacturer’s Response
Apple Inc. has acknowledged the potential safety hazard associated with a swollen battery in this incident. Apple Support advised the user to stop using the device if concerned about safety, indicating an awareness of the risks involved. Consumers experiencing similar issues are advised to contact Apple Support for guidance on repair or replacement options.
Legal Help Available
If you or a loved one has been injured by a defective product or suffered property damage due to a product malfunction, you may be entitled to compensation. The experienced product liability attorneys at Farzan Law understand the complexities of defective product cases and can help you navigate the legal process.
Contact us today for a free consultation: 424-325-3112
Our legal team has successfully represented clients in product liability cases involving defective appliances, automotive defects, medical devices, and consumer products. We work on a contingency fee basis, which means you don’t pay unless we win your case.
Note: This information is based on incident reports provided by the U.S. Consumer Product Safety Commission. If you find information that is incorrect, please contact us immediately so we can correct the post to reflect accurate information.
Disclaimer: The information provided in this post is not intended to be legal or medical advice. This article is based on publicly available incident reports. The incidents mentioned have not necessarily been independently verified or adjudicated.