Frequently Asked Questions about replacement battery functionality and warranty validity.

Will using a 3rd-party battery or battery charger void the warranty on my laptop or notebook computer?

ANSWER: No, it will not. Laptop manufacturers and retailers have a vested interest in perpetuating such blatant misinformation, because batteries, chargers, and replacements contribute a great deal to their bottom lines. Thus, you will often find these folks using statistical flummery to inflate the battery life of their products A recent Newsweek article explained this. The truth is, that there is no significant difference in the functional life of a compatible replacement—other than the very real differences in cost to the consumer. A particularly blatant example can be seen when comparing the price of Dell's refurbished TM777 battery replacement for the popular Inspiron 1501, and the equivalent replacement battery (which is new, by the way) from Suppliesoutlet, the DL6400, which also fits the Dell Inspiron E1502, the E1505, the 6400, and the Vostro 1000.

Would you care to guess the difference in prices? The refurbished battery from Dell will set the shopper back a whopping $149.99, while the SuppliesOutlet replacements, its 1501 batteries, the DL6400s— which meet or exceed the manufacturer's specifications in every respect except the name on the box . . . and the price tags— the SuppliesOutlet product costs a far more modest $34.90.

You haven't answered my question though. Will using, say, a SuppliesOutlet compatible replacement battery void the warranty on my computer?

Absolutely not. Two pieces of legislation, prohibit companies from voiding warranties when an end user wants to use a third-party battery or charger that has not been made by that company. The laws are referred to as the Magnuson-Moss Warranty Improvement Act and the Sherman & Clayton Antitrust Act, both of which are referenced below.

The Magnuson-Moss Act

The MMA, in particular, states unequivocally that a company cannot sell a product under the pretense that the consumer must purchase replacement parts, add-ons, etc., from only that particular company. This includes batteries, chargers, and power supplies that do not have the manufacturers' "blessing".


United States Code Annotated 
Title 15 Commerce and Trade
 Chapter 50 Consumer Product Warranties
15 Section 2302

No warrantor of a consumer product may condition his written or implied warranty of such product on the consumer's using, in connection with such product, any article or service (other than article or service provided without charge under the terms of the warranty) which is identified by brand, trade or corporate name; except that the prohibition of this subsection be waived by the commission if:

  1. The warrantor satisfies the Commission that the warranted product will function properly only if the article or service so identified is used in connection with the warranted product, and
  2. the Commission finds that such a waiver is in the public interest.

Sherman & Clayton Antitrust Acts

The Sherman Antitrust Act, a basic federal enactment regulating the operations of corporate trusts, was passed by the U.S. Congress in July 1890, and declared declared illegal "every contract, combination in the form of trust or otherwise, or conspiracy, in restraint of trade or commerce among the several States, or with foreign nations."

The Clayton Antitrust Act was passed by the United States Congress during the administration of Woodrow wilson and prohibits certain monopolistic practices then common in finance, industry, and trade. The provisions relating to corporate activities declared illegal practices that included exclusive selling or leasing, and other forms of price discrimination.

These acts make it illegal for any computer manufacturer to require you to use only their brand of supplies or dictate what supplies you can or cannot use. An OEM (Original Equipment Manufacturer), or any other manufacturer, cannot void your laptop's warranty because you decided to use products other than theirs.

If you'd like more information you can contact the Federal Trade Commission at (202) 326-3128.

Simply stated, manufacturers cannot threaten to void your warranty simply because you didn't use their overpriced batteries in your laptop. Nor can any company, sales associate, or service technician deny you warranty service for work that would otherwise be covered under warranty, simply because you chose to use a 100% compatible laptop batterie or charger that did not bear the manufacturers' names from, for example,

The Magnuson-Moss Warranty Improvement Act gives you that freedom, the freedom to use third-party, factory-tested, 100% guaranteed compatible equipment without fear of having your warranty voided.

Here's another question, then: Do your batteries function as well as the name-brand batteries and chargers?

ANSWER: Yes, they do. In fact, they function so well that offers a 1-year warranty for every product it sells against defects. And, we defy any similar company in the industry to do better than that.

This discussion of the Magnusson-Moss Warranty Improvement Act is provided for informational purposes only and is copyright 2010 by For more definitive information or opinion, one should always consult an attorney.