I assume most of the laptop user facing the same problem of battery shell life. Hi to all, my name is Miley. Choose the original manufacturer battery from the reputable distributor. This can give you a guarantee. The habit of the person of using it also may impact the battery. As an example, do not simply recharge your battery when it is not end using it.<BR>God bless you all<BR>--Miley--<BR>(<a href="http://www.amazon.com/SterlingTeks-POWWER-Lithium-Ion-Battery-Inspiron/dp/B001FOSILS">inspiron 9300 battery</a><BR><a href="http://www.amazon.com/SterlingTeks-POWWER-Lithium-Ion-Battery-Inspiron/dp/B001FOSILS">battery for dell inspiron 9300</a>)