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 2 out of 5 by Doesn't live up to its name The battery is supposed to be Long Life as the name suggests. That is why I spent the extra cash to get the convenience of a longer charge. I am barely getting 3 hours. Maybe old inventory. Who knows, but very disappointing by my standards. I do like the higher angle of the battery because it does allow my 17" laptop to breathe and keep it running cool! I am hoping HP will replace it as I am an HP fan. Wish I could have rated it higher. September 9, 2014
Rated 5 out of 5 by Raised battery excellent idea Really like the raised design of this battery as air circulates better under computer and does not get as hot as it use to with the older battery. New battery holds charge much better than original battery and no longer running out of power between charges. VERY pleased with purchase, worth the cost. September 8, 2014
Rated 5 out of 5 by battery life I like this product because it gave my laptop a slight tilt therefore my computer no longer gets extremely hot from lying flat on surface. June 7, 2014
Rated 5 out of 5 by Exceeds expectations The battery holds power for 5 hours at a time. The design tilts my computer up and helps keep it cooler. May 30, 2014
Rated 5 out of 5 by This battery has a good life cycle. I have had this battery for about 4 years and it has done a great job but now it's coming to the end of it's life and won't charge over 95% so I replaced it with a new one. I am very happy with the long life and good service this extended battery gives. I used the first one everyday for 4 years without fail and I think that speaks for itself. May 21, 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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