Check to see if your Razor has included a custom battery power manager which allows you to set the maximum charge level of the battery. The battery only charges up to a certain percentage (typically 50% - 80%) unless you manudally override it. Some brand names have such a utility program while others do not.
There has been evidence that shows when a battery is close to it's maximum charge it accelerates a chemical reaction known as lithium ion plating. Lithium ions are basically what allows a lithium ion battery to hold a charge. Lithium ion plating is when the ions starts to clump together and form "plates" when this happens the ions are no longer capable of holding a charge which means the battery life begins to drop.
If your laptop...