what is the best way or tips for using notebook to save its life time specially lithium Battary?
For the battery life, I heard that it’s better to take out the battery when you’re using the AC adapter, unless you specifically want to charge it. Otherwise, the battery will charge, then discharge a little, then charge again, etc. and this may wear it out. For the same reason, use the AC adapter whenever possible. Besides that, just be careful not to hit/drop/spill something on the notebook.