System Batteries; Main Battery; Cmos Battery; Bridge Battery - NEC VERSA FX Service And Reference Manual

System Batteries

Your NEC Versa is equipped with a main, Lithium-Ion battery, and two backup batteries that
help to prevent data loss. In addition, your system provides the option to attach a second
Lithium-Ion battery to the connector on the bottom of the system, extending battery life when
you are away from an AC power source.

Main Battery

The standard Lithium-Ion (Li-Ion) battery provides the main power source in your NEC Versa
FX computer. See Specifications for a list of battery specifications. In addition to this battery,
the CMOS battery and bridge battery also provide system power.

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.

Bridge Battery

The bridge battery saves your system status in Standby mode giving you time to install a fully
charged battery or connect to AC power when your battery charge becomes low.
using it on battery power for the first time. Doing so insures that the bridge battery is fully charged
and that no data is lost during a battery change.

BIOS Setup

Your NEC Versa FX computer comes with a hardware program called BIOS Setup that allows
you to view and set system parameters. BIOS Setup also allows you to set password features that
protect your system from unauthorized use.
Use BIOS Setup to:
!
set the current time and date
!
customize your operating system to reflect your computer hardware
!
secure your system with a password
!
balance your performance needs with power conservation.
Access the BIOS utility at power-on. Just press
When you press
and displays the current CMOS RAM settings.
Connect your NEC Versa system to AC power for a full 24 hours before
Press <F2> to enter Setup.
F2 to enter BIOS Setup, the system interrupts the Power-On Self-Test (POST)
F2 when the following prompt appears.
System Configuration and Setup 2-9