Laptop Battery.

I want share you some tips for extend the life of your battery.
Learn to single-tasks.
Avoid extreme temperatures.
Clean your battery contacts.
Keep the battery fresh.
Avoid using a CD or DVD.
Reduce the LCD's brightness level.
Turn off ports.
Disable Bluetooth.
Turn the volume level down, or mute it, if you do not plan to use it.
Unplug external devices such as a USB mouse or an external drive.