Battery Fits Models:- ideapad U450p, ideapad U550a, ideapad U450a, ideapad U550, ideapad U450

Battery Part Numbers:- l09l8d21, l09s8d21, l09l4b21, l09s4b21

The battery that is shown here is manufactured using the best designed components and the highest quality parts. The Cameron Sino range of batteries have been designed to be safe, well built, and are historically the most reliable and cost effective generic batteries that we have ever supplied, They are designed with safety as a priority and should last as long as the original batteries that came with your device. Finding the correct battery for your device can be difficult. There are a huge range of models and part numbers and it can be confusing. Believe us when we say its easier to reach out to us first than it is to return the product later. Please confirm that you are selecting the correct battery with us if you are really not sure which battery you need. Finding the correct battery for your device can be difficult. There are a huge range of models and part numbers and it can be confusing. Believe us when we say its easier to reach out to us first than it is to return the product later. Please confirm that you are selecting the correct battery with us if you are really not sure which battery you need. Look at all of the details below and make sure that the model of your product and also the battery number are shown in the information below. Twelve months warranty is usually standard on most Cameron Sino products. Difference's in this policy it will be stated on this page. Any misuse of the battery or modifications will invalidate the warranty as we cannot be responsible for misuse of the products design. What's the average life of a Lithium Ion or Lithium Polymer battery? Usually it is around 400 cycles for Lithium Ion and usually this is the same for Lithium Polymer. Slightly different is Nimh, It should last for around 500 cycles. (cycling a battery means to discharge and recharge.) Its not a common known fact that a cycle will still be used, even if only partially discharged then recharged. Its good practice to run the battery low and recharge when the battery reaches about 10% of its charge left. This will extend the life of the battery and maintain its capacity for charge. Being an ISO 9001 certified factory means that the range of batteries that Cameron Sino build have to be manufactured with only the highest quality components and to a very high level of integrity. You can be sure that the batteries that supply from them are fully tested in the devices they are designed for and are built with all the same safety protocols as the original battery with the same safety circuits contained within. Most of the known fitments for this product can be seen in the information below. Special Remarks:-None at This TimeAll of the details that we provide with regards to fitment is supplied by the manufacturers and although we do try to keep this updated we do recommend as a final check its worth comparing your original battery with the one shown. With over twenty thousand different batteries its difficult to keep our records as up to date. We do try but new fitments come on stream every week due to the launch of new products.Mah is the rating which estimates the amount of charge that a battery will hold or how much current it will provide for how long. The higher the this rating the longer the runtime.