HP MU09 Long Life Notebook Battery

HP MU09 Long Life Notebook Battery

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UPC: 884962734155   Part: WD549AA#ABB


HP is dedicated to providing you with innovative power solutions to increase your notebook's entertainment and productivity value while reducing your total cost of ownership. The HP Long Life Battery has up to a three year life span – backed by the industry’s first three-year limited warranty. HP is committed to the environment and reducing battery waste. Fewer batteries are used over the life of the notebook with HP Long Life Batteries making this a smart choice for you and the environment.


  • Lower Total Cost of Ownership: One battery has an up to three year cycle lifespan, reducing your overall battery cost since you purchase fewer batteries over the life of the notebook.
  • Flexible Solutions: With up to three years of warranted performance, you can enjoy the entertainment and productivity features of your notebook for longer then with standard solutions.
  • Environment: HP is committed to protecting the environment and we design our products with that in mind. New technology reduces overall battery waste by requiring fewer batteries to be used over the life of the notebook. HP gives you the option to benefit not only yourself but the environment as well.
  • Intelligent Construction: An insulating safety wrap is used to enclose the cells.; A fire-retardant casing, which conforms to rigorous safety standards, encloses the entire battery.; Barrier walls isolate cells from the Printed Circuit Assembly (PCA), presenting a liquid and thermal barrier.; The PCA has a conformal coating to protect circuitry from potential shorts.; Internal connections are designed to prevent pinching and potential short circuits.
  • Genuine HP Batteries: Tested with all compatible HP notebook PCs so HP can deliver the highest quality products, services, and solutions to your home
  • HP Pavilion: dm4-1000, dm4-2000, dm4-3000, dv7-4000, dv7-6000, dv6-3000, dv6-6000, dv5-2000, dv4-4000, dv3-4000; HP: G42, G62, G72; ENVY: 17-100, 17-200; Compaq Presario: CQ32, CQ42, CQ43, CQ62, CQ72


  • 1.05 lb
  • 8.07 x 2.09 x 3.81 in

What's in the box

  • Battery; documentation
  • Three-year, worldwide parts-and-labor limited warranty; 24x7 HP technical phone support during warranty period

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Customer ratings and reviews for HP MU09 Long Life Notebook Battery

Rated 5 out of 5 by 9 cell battery is the only way to go. I found the battery that came with my computer would only last a couple hours then I would have to recharge. I should have upgraded to the 9 cell battery initially as it definitely meets the needs of utilizing the computer without the "tether". June 4, 2012
Rated 4 out of 5 by Great Battery I am very pleased with the battery performance so far. The best part of it is it is not flat so air can flow under the computer and not become so hot. May 31, 2012
Rated 5 out of 5 by Big difference My original battery would no longer charge to 100% and quit very quickly. After reading the reviews of both batteries (the original model and this one) I decided to try this battery. I'm very pleased with it's performance and actually like that the battery puts the laptop at a slight angle due to its size. I was also very impressed with the speed at which I received my order. It would be nice if the battery were more reasonable in price but its much cheaper than replacing a laptop that is working well. May 19, 2012
Rated 1 out of 5 by Terrible Battery Life when purchasing my 17 inch DV7, I knew it would demand power and did not expect long life from the standard battery. Therefore I purchased the MU09 extended battery thinking I would easily get 4+ hours of battery life. I barely received 2 hours from this battery. What a waste!! May 6, 2012
Rated 4 out of 5 by Replacement battery for G62 I purchased this battery to replace the original one in my G62 laptop. It works well and as others have mentioned the angle is provides the keyboard is nice. April 23, 2012
Rated 5 out of 5 by Worth it It is a bit bulky but since I don't bring my laptop to class, it's not a problem. Definitely works better than the stock battery, I get to use my laptop without charging for a good 4-5 hours, and even then, it'll only reached 40%. I write my papers, use Photoshop, and just clock in a lot of time on the internet, and this battery makes it easier. April 4, 2012

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Owner support

Warranty information

This product is covered by the standard HP warranty

Support information

Support for this product is provided by HP Customer Care

Returns & exchange information

The HP Home & Home Office Store will accept returns or exchanges for this product up to 21 days after delivery

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