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 has such a battery utility program, then let it do it's job and do not allow it to charge the laptop's battery to 100% unless you know you need to use it away from an AC outlet. For maximum gaming performance, always plug in your laptop because Windows has been designed not to allow the laptop to perform at 100% even if you set the max performance to 100% in the power profile.