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How to control the life time of your Laptop Battery?

Steps to maximize the life of your battery           

                There are actions you can take to make your battery last longer during each charge cycle and live longer over many cycles. Each Brand always recommends following the instructions for charging and storage that came with the battery or notebook. On this page we offer additional suggestions to help you get the most from your portable power supply.            

  Manage battery power more effectively in Windows

                Make sure your battery gives the power you need, when you need it. Power Options in your Control Panel allow you to adjust the power management features of your notebook PC.

  Tips for conserving battery power on notebook PCs

           You can manually change the power consumption of your notebook PC and conserve battery power.   

1. Reduce the brightness of the screen to the minimum readable level. Use the function keys on the top of your keyboard to adjust the brightness.
2. Remove peripherals when not in use. External hard drives, CD-ROMs, Zip drives, PC cards, and other peripheral devices can draw power from your battery even when they are not in active use.  Disconnect them when you have finished using them.
3. Turn off the Wireless On-Off button when it is not in use. If your notebook has one, press the Wireless On-Off button so that the light turns off.

Battery care practices

 Battery cells suffer gradual, irreversible capacity loss over time. Such aging occurs more rapidly as temperature and discharge loads increase. Here are some suggested ways to minimize the capacity loss for your battery.               

•  Store Li-Ion batteries between 20°C and 25°C (68°F and 77°F) with 30% to 50% charge.
•  Do not leave batteries exposed to high temperatures for extended periods. Prolonged exposure to heat (for example, inside a hot car) will accelerate the deterioration of Li-Ion cells.
• Remove the battery if the notebook will be stored (turned off and not plugged into AC power) for more than 2 weeks.
•  Remove the battery if the notebook will be plugged into AC power continuously (via a wall adapter or docking station) for more than 2 weeks.

Note: Recommendations for battery use and storage of  are covered in the  User Guides for each model. 

Calibrating the notebook battery

Calibrating the battery means recharging the battery to its maximum capacity and resetting the battery gauge to display the level of charge accurately.The Windows system tray battery meter may not correctly display the battery charge level when a notebook is new or has not been used for a long period of time. If the battery gauge becomes inaccurate, use one of the methods below to calibrate the battery gauge reading.

Short discharges and recharges do not fully synchronize the battery's fuel gauge with the battery's state-of-charge. This can result in the amount of power available in one cycle being less than expected or the battery meter being inaccurate.

Under normal usage, batteries should be calibrated a minimum of once every 3 months. Use the following links for more information on calibrating your battery

1. Calibrating the Notebook Battery in Microsoft Windows 98, ME, XP, and 2000
2. Calibrating the Notebook Battery (Windows Vista and Windows 7)