Your
laptop
batteries will deteriorate over time whether you use it
or not. Although the Li-Ion industry does not publicize this fact,
your
laptop
battery’s clock began ticking the moment it was
assembled. The elements inside your
laptop
batteries slowly react with each other, eventually
rendering the battery unable to supply the required power to your
notebook. In addition, your
laptop
batteries are rated to last between 300 and 800
charge/recharge cycles. It will gradually lose charge capacity rather
than abruptly fail to power your notebook.
The general consensus is that
laptop
batteries last one to three years. While you can slow
the
laptop
battery’s aging and loss of capacity, you cannot stop
either decline. The temperature of the battery, combined with the
amount and nature of its usage contribute significantly to your
battery’s lifespan. You can ease the aging process with some care and
maintenance.
Temperature
Lower temperatures slow down the self-discharge (loss of
charge while disconnected) and aging process of the elements within
your
laptop
batteries. Therefore it follows that higher temperatures
shorten the life of your
laptop
batteries. Leaving your battery connected while on AC
power causes the internal temperature of the battery to rise. Removing
your
laptop
batteries and storing it in a cool, dry place will help to
slow the aging process. Keeping your notebook in a hot environment is
also detrimental to your battery.
Amount of Usage
The Lithium-Ion batteries used in notebooks are rated to handle
between 300 and 800 charge/discharge cycles. Some of these cycles are
used when you leave your
laptop
batteries connected to your notebook while on AC power. On
AC power, the notebook will routinely “top-off” the battery when its
charge reaches predetermined levels (i.e. 95%). Removing your
laptop
batteries and storing it in a cool, dry place will help to
preserve some of these cycles.
Nature of Usage
Li-Ion batteries do not suffer from the memory-effect (requiring
complete discharge before recharging to avoid loss of capacity) like
older rechargeable batteries. Regular full discharge/recharge cycles
result in an increased loss of capacity per cycle. A series of
partial discharge cycles are better for Li-Ion batteries than a single
full discharge. You should, however, calibrate your
laptop
batteries routinely.
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