Recharging Battery Precautions; Extending Battery Life; Nec Versabay Iii; Internal Batteries - NEC SX Service And Reference Manual

Recharging Battery Precautions

Adhere to the following precautions when recharging the primary or secondary
battery.
T
Use only the NEC battery charger designed for your NEC Versa battery
type. Different NEC Versa models require different batteries and battery
chargers.
T
Charge the battery for the specified charge time only.
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During charging, keep the environmental temperature between 32°F and
104°F (5°C to 35°C).
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Read the instructions that came with the battery charger before charging
the battery.

Extending Battery Life

While on the road, it is important to be aware of the simple things you can do to
extend the life of the system's main battery. One way is to keep the brightness
setting low. Use the

NEC VersaBay III

The NEC VersaBay III Battery provides a second Lithium-Ion (Li-Ion) battery
to use in your NEC Versa SX computer. Inserting a second fully charged battery
increases battery life to approximately 4 to 5 hours.
See the NEC CSD web site at http://www.nec-computers.com/ for details about
the NEC VersaBay III Battery.

Internal Batteries

The nine-cell Lithium-Ion (Li-Ion) battery provides the main power source in
your NEC Versa SX computer. In addition to this battery, the CMOS battery
and bridge battery also provide power for specific system requirements.

CMOS Battery

This lithium battery provides battery backup and prevents data loss in the
system's complementary metal oxide semiconductor (CMOS) RAM. This
memory area contains information on the system's configuration, for example
date, time, drives, and memory. The CMOS battery charges when your NEC
Versa is connected to AC power. The CMOS battery may discharge completely
if the NEC Versa notebook remains unused for approximately two months. The
minimal CMOS battery life is 3 years.

Bridge Battery

The bridge battery saves your system status in Suspend mode for up to five
minutes. This gives you time to install a fully charged battery or plug in AC
power when your battery charge becomes low.
2-10 System Configuration and Setup
and function keys to control the brightness.
Fn+F8 Fn+F9