50 - Battery packIn addition, the useful lifespan of the battery is adversely affected by thefollowing usage patterns: Using the computer on constant AC power. Not discharging and recharging the battery to its extremes, as describedabove. Frequent use; the more you use the battery, the faster it will reach theend of its effective life. A standard computer battery has a life span ofmore than 1,000 charges.Optimizing battery lifeOptimizing 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: 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 your PC in a cool, dry place. The recommended temperature is10° C (50° F) to 30° C (86° F). Higher temperatures cause the battery toself-discharge faster. Excessive recharging decreases the battery life. Look after your AC adapter and battery.