Lenovo ThinkPad 390X User's Reference: ThinkPad 390X - Page 58
Cleaning Your Computer, Extending Your Battery Life
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Service Hints & Tips 5. Make sure all computer doors and covers are closed. 6. Use a quality carrying case that provides adequate cushion and protection. Cleaning Your Computer You should occasionally clean your computer as follows: Use a soft cloth moistened with non-alkaline detergent to wipe the exterior of the computer. Don't spray cleaner directly on the display or keyboard. Gently wipe the LCD with a dry, soft cloth. Extending Your Battery Life The amount of battery power consumed by your computer depends on such conditions as the usage frequency, the operating temperature, and the period in storage (if unused). The following tips can help you to extend the life of your battery: If your battery is brand new and you are charging it for the first time, it might not become fully charged due to the characteristics of the chemicals in the cell. To maximize performance, ensure that all chemicals in the battery are fully activated by cycling the battery (fully charge, then fully discharge) three times. This procedure is also recommended if you stored the battery for a few months. Do not charge the battery pack until all of its power is used. Recharging a battery pack that is not completely discharged can shorten battery life. Once you start charging the battery pack, do not use it until it is fully charged. Whenever possible, use the ThinkPad battery power-saving modes: - standby: The LCD and the hard disk drive are turned off. - suspend: All tasks are stopped and stored in memory to save power. 42 ThinkPad 390X User's Reference