Protection of the Notebook
Nickel Cadmium (NiCad) is the most popular and durable type of
rechargeable battery. They are quick to charge, last approximately
and discharge cycles, and work well in extreme temperature conditions.
Unfortunately, NiCad batteries suffer from "memory effect" if
they are not completely discharged each cycle. The memory effect
reduces the overall capacity and run time of the battery.
Nickel Metal Hydride (NiMH) batteries do not suffer from the memory
effect as the NiCad counterpart. Compared to a NiCad battery of equal
size, NiMH batteries run for 30% longer on each charge cycle. They
are also made from non toxic metals so they are environmentally friendly.
They downside of NiMH technology is the overall battery life. These
batteries generally last for 400 charge and discharge cycles.
Lithium Ion (LiON) is the latest development in portable battery
technology. These batteries do not suffer from the memory effect.
Compared to a NiMH of equal size, a LiON will deliver twice the run
time from each charge. Unfortunately, these batteries are only available
for a limited number of models and are more expensive than NiMH.
Similar to NiMH technology, LiON batteries have a life expectancy
of 400 charge and discharge cycles.
Most new notebooks use "smart" batteries with internal
microprocessors. These special circuits communicate valuable charge/discharge
information with your notebook. This helps run useful features like
the battery fuel gauge while providing extra safety.
A "poly switch" provides self-resetting protection in
case you accidentally short circuit your battery.
Prevention of Overcharging
As the battery cells begin to heat during charge, a thermister in
your battery pack changes resistance telling the computer to stop
charging the battery further.
A battery pack consists of multiple high-capacity battery cells
inside. These high-quality NiCad, NiMH, and LiON cells are used to
guarantee maximum capacity and service life.
Fuse Protection of the Notebook
A current and temperature fuse provided inside the battery pack
to insure that your battery does not damage your notebook in case
other devices fail during periods of severe overcharge or short circuit.
Self-resetting thermal breakers prevent severe overcharge in case
your computer doesn't sense that your battery is fully charged. This
device also protects the battery from damage in the event of short