Charging the battery, Optimizing battery life – Acer Aspire 4739Z User Manual

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By following the battery conditioning process you condition your battery to
accept the maximum possible charge. Failure to follow this procedure will
prevent you from obtaining the maximum battery charge, and will also shorten
the effective lifespan of the battery.
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 about
300 charges.

Charging the battery

To charge the battery, first make sure that it is correctly installed in the battery
bay. Plug the AC adapter into the computer, and connect to a mains power
outlet. You can continue to operate your computer on AC power while your
battery is charging. However, charging the battery with the computer turned
off results in a significantly faster charge time.

Note: You are advised to charge the battery before retiring for
the day. Charging the battery overnight before traveling enables
you to start the next day with a fully charged battery.

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.

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