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In addition, the useful lifespan of the battery is adversely affected by the 
following usage patterns:

• Using the computer on constant AC power with the battery inserted. If 

you want to use constant AC power, you are advised to remove the 
battery pack after it is fully charged.

• Not discharging and recharging the battery to its extremes, as 

described above.

• Frequent use; the more you use the battery, the faster it will reach the 

end of its effective life. A standard computer battery has a life span of 
more than 1,000 charges.

Optimizing battery life

Optimizing battery life helps you get the most out of battery operation, 
prolonging the charge/recharge cycle and improving recharging 
efficiency. You are advised to follow the suggestions set out below:

• Purchase an extra battery pack.

• Use AC power whenever possible, reserving battery for on-the-go use.

• Eject a PC Card if it is not being used, as it will continue to draw power 

(for selected models).

• Store the battery pack in a cool, dry place. The recommended 

temperature is 10° C (50° F) to 30° C (86° F). Higher temperatures 
cause the battery to self-discharge faster.

• Excessive recharging decreases the battery life.

• Look after your AC adapter and battery.