IBM 2621483 User Guide - Page 63

Service Hints & Tips 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. - hibernation: All tasks are stopped. The memory data and the current status of the computer are stored in the hard disk drive; then the power is turned off. Decrease the LCD brightness. Stop the power supply to a serial device if it is not in use. Remove the battery pack and keep it in a cool place if you will not be using the computer for a long period. Ruggedized Mobile Computers Some professionals work in environments that may require special ruggedized features to protect their computers from extreme temperature, humidity, and physical punishment. Construction, public service, distribution, service repair, and utilities are some of the environmentally demanding professions that may require rugged mobile computers that can withstand stresses. For these applications, IBM offers such computers (not Thinkpad Systems), especially designed Getting Familiar with Your Computer 47