Status: In progress

Mentzer, et al. v. Energizer Brands LLC

Energizer allegedly markets and sells a 10,000 mAh power bank that actually only has an output capacity of 6,000 to 6,600 mAh.

  • Deadline to file a claim: TBD
  • Proof of Purchase Required: No
  • Potential Individual Reward: TBD
  • Total Settlement Amount: TBD
  • States Involved

Abraham Jewett  |  February 14, 2023

Category: Electronics

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Energizer logo on a smartphone screen and in the background, representing the Energizer portable charger class action lawsuit.
(Photo Credit: viewimage/Shutterstock)

Energizer portable charger class action overview:

  • Who: An Energizer customer is suing the battery company. 
  • Why: The plaintiff says the company’s Mac Power Bank is falsely advertised. 
  • Where: The Energizer portable charger class action was filed in an Illinois federal court. 
  • What are my options: Top Class Actions recommends Belkin products for consumers looking for an alternative to the Energizer charger.

The Energizer Mac Power Bank portable charger delivers 25% less charge than promised, a new class action lawsuit alleges. 

Plaintiff Josh Mentzer filed the class action against Energizer Brands LLC on Feb. 12 in an Illinois federal court, alleging violations of state and federal consumer laws. 

According to the lawsuit, Energizer Brands makes and sells a Mac Power Bank portable charger for electronic devices promising 10,000 milliampere hour (mAh). 

However, the promise of 10,000 mAh is misleading, as the power back actually delivers 25% less charge than that, Mentzer alleges. 

“Though 10,000 mAh will generate more than three charges for a smartphone with a 3,200 mAh capacity, the Product can only charge such a device less than two times,” he states.

Energizer product runs on different voltage than iPhones, lawsuit alleges

The Energizer Mac Power Bank’s mAh is based on an average voltage of 3.7 volts (v), while an electronic device such as an iPhone operates on 5v, the lawsuit states.

This means that, while the product is charging a device, 3.7v must be converted to 5v, reducing the amount of available mAh, Mentzer alleges. 

“Given that the conversion efficiency for the product is between eighty and ninety percent, the usable/output capacity is only between 6,000 and 6,600 mAh, substantially lower than the 10,000 mAh promised,” Mentzer says. 

The plaintiff seeks to represent an Illinois class of consumers who bought the product, plus a consumer fraud multistate class of consumers from Utah, North Dakota, Kansas, Mississippi, Arkansas, Alaska, Wyoming and South Carolina.

He is suing for violations of state consumer laws, breach of warranty, negligent misrepresentation, fraud and unjust enrichment and seeks certification of the class action, damages, fees, costs and a jury trial. 

Energizer faced another class action in 2021 that alleged its AA MAX batteries don’t actually last up to 50 percent longer than basic alkaline batteries, despite claims. 

Did you buy this Energizer portable charger? Let us know your experience in the comments. 

The plaintiff is represented by Spencer Sheehan of Sheehan & Associates PC. 

The Energizer class action lawsuit is Josh Mentzer, et al. v. Energizer Brands LLC, Case No. 2:23-cv-02028-CSB-EIL, in the U.S. District Court for the Central District of Illinois. 


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65 thoughts onEnergizer class action claims company falsely advertises portable chargers deliver 10,000 mAh

  1. Ray Fierro says:

    I bought batteries and charger

  2. MADELYN SOSA says:

    Not sure if its to late but please add me.

  3. Terri Lynn Sottile says:

    Class action energizer
    I have bought 2 of these. How do I file a claim

  4. Drina Pedrol says:

    I am eligible, add me.

  5. Sonia collazo says:

    Please add me to it

  6. See May Thor says:

    I brought 2. Add me.

  7. Melissa Cuevas says:

    I bought one of the energizer portable charger please add me not enough juice I think

  8. Erin Boothe says:

    Add me please

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