Nice post. I want also make some addition in this post to add some tips for long life of 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.
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