• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
Financebatteries

Battery behemoths battle: Duracell is suing Energizer over battery-life claims

By
Chris Morris
Chris Morris
Former Contributing Writer
Down Arrow Button Icon
By
Chris Morris
Chris Morris
Former Contributing Writer
Down Arrow Button Icon
June 17, 2025, 11:20 AM ET
A close-up of Energizer's MAX batteries, the subject of a Duracell lawsuit
Energizer brand batteries sit on display in a supermarket in Princeton, Illinois, U.S., on Wednesday, April 30, 2014.Daniel Acker / Bloomberg—Getty Images
  • Duracell has filed a lawsuit against Energizer. The battery companies are battling over Energizer’s claims that its Max batteries last 10% longer than Duracell. Duracell, which is owned by Berkshire Hathaway, says it has suffered “irreparable reputational harm” because of the ads. The companies have a long history of lawsuits against each other.

Warren Buffett is suing the Energizer Bunny.

Recommended Video

Battery maker Duracell, which has been owned by Buffett’s Berkshire Hathaway since 2014, has filed suit against Energizer, saying the rival battery maker ran a deceptive advertising campaign that caused “irreparable reputational harm” to the brand.

The complaint, filmed June 13 in a Manhattan federal court, is the latest in a long series of legal battles between the two companies. (They were last in court five years ago over similar claims on a different line of batteries. Those suits were voluntarily dismissed.)

Duracell alleges Energizer has falsely claimed its Energizer Max batteries last 10% longer than Duracell’s Power Boost brand.

“The Energizer MAX False Advertising is a clear effort by Energizer to expand its market share—at Duracell’s expense—by confusing and misleading consumers about the comparative performance of Energizer MAX batteries and Duracell Power Boost batteries with blatantly false advertising in a transparent, and unfair, effort to drive sales,” the complaint said.

Duracell is hoping to end the ad campaign and is seeking monetary damages.

An Energizer Holdings spokesperson said the company does not comment on active litigation.

The battles between the two companies go back almost 80 years when Duracell first entered the market in 1946. Energizer, then known as Ever Ready, had invented the AA battery in 1907, and the battle was on.

Join us at the Fortune Workplace Innovation Summit May 19–20, 2026, in Atlanta. The next era of workplace innovation is here—and the old playbook is being rewritten. At this exclusive, high-energy event, the world’s most innovative leaders will convene to explore how AI, humanity, and strategy converge to redefine, again, the future of work. Register now.
About the Author
By Chris MorrisFormer Contributing Writer

Chris Morris is a former contributing writer at Fortune, covering everything from general business news to the video game and theme park industries.

See full bioRight Arrow Button Icon

Latest in Finance

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Finance

Today’s top high-yield savings rates: Up to 5.00% on April 10, 2026
Personal FinanceSavings accounts
Today’s top high-yield savings rates: Up to 5.00% on April 10, 2026
By Glen Luke FlanaganApril 10, 2026
42 minutes ago
Top CD rates today, April 10, 2026: Lock in up to up to 4.20%
Personal FinanceCertificates of Deposit (CDs)
Top CD rates today, April 10, 2026: Lock in up to up to 4.20%
By Glen Luke FlanaganApril 10, 2026
42 minutes ago
Photo: Donald Trump
EconomyMarkets
U.S. and Iran begin peace talks as Trump’s White House goes to war against the media, insider traders, and the Pope
By Jim EdwardsApril 10, 2026
46 minutes ago
stressed worker
EconomyJobs
The job market is so bad, workers now think they have worse odds of finding a role than during the pandemic
By Jake AngeloApril 10, 2026
2 hours ago
Dario Amodei
NewslettersTerm Sheet
What Anthropic’s too-dangerous-to-release AI model means for its upcoming IPO
By Beatrice NolanApril 10, 2026
3 hours ago
A view of a bus shelter at Pennsylvania Avenue and 22nd Street NW where an electronic billboard and a poster display the current U.S. National debt per person and as a nation at 38 Trillion dollars on October 28, 2025 in Washington, DC.
Economynational debt
‘We owe it to the next generation’ to get national debt under control, says think-tank boss, as U.S. borrowing hits $1.2 trillion in just six months
By Eleanor PringleApril 10, 2026
4 hours ago

Most Popular

The U.S. government is spending $88 billion a month in interest on national debt—equal to spending on defense and education combined
Economy
The U.S. government is spending $88 billion a month in interest on national debt—equal to spending on defense and education combined
By Fortune EditorsApril 9, 2026
23 hours ago
A Meta employee created a dashboard so coworkers can compete to be the company's No. 1 AI token user—and Zuckerberg doesn't even rank in the top 250
AI
A Meta employee created a dashboard so coworkers can compete to be the company's No. 1 AI token user—and Zuckerberg doesn't even rank in the top 250
By Fortune EditorsApril 9, 2026
1 day ago
Gen Z doesn't want your full-time job. They want several part-time roles, and it's reshaping the entire workforce
Success
Gen Z doesn't want your full-time job. They want several part-time roles, and it's reshaping the entire workforce
By Fortune EditorsApril 9, 2026
1 day ago
White-collar workers are quietly rebelling against AI as 80% outright refuse adoption mandates
AI
White-collar workers are quietly rebelling against AI as 80% outright refuse adoption mandates
By Fortune EditorsApril 9, 2026
1 day ago
Gen Z workers are so fearful AI will take their job they’re intentionally sabotaging their company’s AI rollout
AI
Gen Z workers are so fearful AI will take their job they’re intentionally sabotaging their company’s AI rollout
By Fortune EditorsApril 8, 2026
2 days ago
Current price of oil as of April 9, 2026
Personal Finance
Current price of oil as of April 9, 2026
By Fortune EditorsApril 9, 2026
22 hours ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.