Sony PCG-SR21K On using the battery pack

Precautions

Sony Notebook User Guide

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￿	If the disk is badly soiled, moisten a soft cloth with water, wring it out well, and use it to wipe the surface
	of the disk from the center out. Wipe off any remaining moisture with a dry soft cloth.
On using the battery pack
￿	Never leave the battery pack in temperatures above 60° C, such as in a car parked in the sun or under
	direct sunlight.
￿	Battery life is shorter in a cold environment. This is due to decreased battery efficiency at low
	temperatures.
￿	Charge the batteries at temperatures between 10° C to 30° C. Lower temperatures require a longer
	charging time.
￿	While the battery is in use or being discharged, the battery pack heats up. This is normal and is not cause
	for concern.
￿	Keep the battery pack away from all sources of heat.
￿	Keep the battery pack dry.
￿	Do not open or try to disassemble the battery pack.
￿	Do not expose the battery pack to any mechanical shock.
￿	If you are not using the computer for an extended period of time, remove the battery pack from the
	computer to prevent damage to the battery.
￿	If, after fully charging the battery pack, the battery power is still low, the battery pack may be reaching
	the end of its life and should be replaced.
￿	You do not need to discharge the battery before recharging.
￿	If you have not used the battery pack for a considerable amount of time, recharge the battery.