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 So glad I purchased the long-life battery The battery that came with my computer a year ago was failing. I decided to purchase the 9 cell extended life battery. I am no longer tethered to a wall outlet, and can take my laptop to rather long meetings with confidence that the laptop battery will not fail me in the midst of the meeting. In addition, the battery holds the back of the computer slightly raised off the table. This is useful during my high CPU-use activities, allowing more airflow around the fan. Others may find this bulky, but it assists in the efficiency of my computer. November 25, 2011
Rated 4 out of 5 by Decent The battery arrived on time, in good condition. I've only had it for a few weeks and the battery life I get is about 2-2.5 hours depending on what I'm doing. I had expected more from a 9 cell battery April 15, 2014
Rated 5 out of 5 by Great Battery Life You can't go wrong if you purchase this battery. I found that it gives me more battery life and the fact that it tilts the laptop upward makes it more comfortable when typing. April 11, 2014
Rated 5 out of 5 by Good Buy. Worth the money My laptop needed a new battery and this one is a great alternative to the standard battery that I got with the original purchase. It has longer life. between charges. April 5, 2014
Rated 3 out of 5 by good features Performs well, charges quickly. Doesn't last as long as I thought a long-life battery would--a few hours). March 26, 2014
Rated 5 out of 5 by Great performance This battery has performed very well, and I will definitely buy another one for our other laptop when needed. Due to the design, it does raise the rear of the laptop a little, but we haven't found this to be a problem. (If anything, it makes typing easier.) March 12, 2014
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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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