Hercules Hercules 20v Lithium Ion 2.0AH – Product Liability Lawyer

2026-06-17 – A consumer reported that a Hercules 20V Lithium Ion 2.0AH battery exploded while being used with a drill, causing temporary blindness and requiring emergency medical treatment. The incident was filed with the U.S. Consumer Product Safety Commission (CPSC) via the SaferProducts.gov database, highlighting an explosion hazard linked to a potential manufacturing defect.

Product Details

Brand Name: Hercules
Manufacturer: Harbor Freight Tools
Model: Hercules 20v Lithium Ion 2.0AH
Retailer: Harbor Freight
Incident Report Number: 6069887
Severity Type Name: Emergency Department Treatment Received
Severity Type ID: 9

Incident Overview

According to the incident report filed on May 20, 2026, a consumer was using a drill equipped with a Hercules 20V Lithium Ion 2.0AH battery when the battery suddenly exploded. The explosion occurred in close proximity to the user's face, resulting in temporary blindness and multiple debris fragments entering the eyes. The consumer was transported to a trauma unit, where medical personnel worked to treat the eye injuries and remove battery debris.

The report describes the battery as having a manufacturing defect that caused the explosion during normal use. The consumer is currently undergoing medical treatment for eye injuries and has been unable to work. The incident underscores the serious risks associated with lithium-ion battery failures, which can occur without warning and cause severe harm to users.

Safety Concerns

Immediate Dangers: An exploding lithium-ion battery can release high-velocity debris and toxic chemicals, posing immediate risk of eye injuries, burns, and blunt force trauma. In this case, the consumer suffered temporary blindness and required surgical removal of debris from their eyes.

Long-Term Risks: Eye injuries from battery explosions may lead to permanent vision impairment or chronic conditions such as corneal scarring or cataracts. Debris embedded in ocular tissue can also cause infection or long-term inflammation requiring ongoing medical care.

Who Might Be Affected: The primary user is at highest risk due to proximity during operation, but bystanders can also be struck by debris. Lithium-ion battery failures pose a particular danger when the device is held near the face or body.

Warning Signs: While some batteries may show warning signs like swelling, overheating, or hissing sounds before failure, this incident involved a sudden explosion without reported prior symptoms. Consumers should remain vigilant for any physical distortion or unusual heat.

What Our Clients Say

What Consumers Should Do

Stop Using Immediately: If you own a Hercules 20V Lithium Ion 2.0AH battery, discontinue use until further information is available. Do not charge or operate the battery.

Do Not Attempt Repairs: Do not open, puncture, or attempt to repair the battery. Damaged lithium-ion cells can enter thermal runaway and cause fire or explosion.

Preserve the Product: Keep the battery and any debris in a safe, dry location. Do not dispose of it, as it may be needed for investigation or evidence.

Document the Incident: Take photographs of the battery and any damage, and write down details of what occurred, including date, time, and circumstances.

Seek Medical Attention: If you experience any injury from a battery explosion, seek immediate medical evaluation, especially for eye injuries or burns.

Report to the CPSC: File a report at SaferProducts.gov to help regulators identify potential safety issues.

Consumers who have suffered injury or property damage may want to speak with a product liability attorney about their legal options.

Manufacturer's Response

Harbor Freight Tools acknowledged the report and stated that it takes all incident reports seriously and is investigating the concerns. The company encourages users with questions to contact them at 800-444-3353 or productcompliance@harborfreight.com.

Legal Help Available

H Law Group is a California product liability law firm representing individuals injured by defective products. Our attorneys work on a contingency fee basis, meaning you pay nothing unless we recover compensation for you. We offer free, no-obligation consultations to discuss your case and explore your legal options. If you or a loved one was injured by Hercules Hercules 20v Lithium Ion 2.0AH or a similar product, contact H Law Group at (888) 499-4948 for a free, no-obligation consultation.