System Batteries; Primary Battery; Secondary Battery; Cmos Battery - NEC VERSA TXI Manual

System Batteries

Your NEC Versa notebook is equipped with a primary Lithium-Ion battery that helps to
prevent data loss. In addition, your system provides the option to insert a second
Lithium-Ion battery in the NEC VersaBay IV slot, extending battery life when you are
away from an AC power source.

Primary Battery

The standard Lithium-Ion (Li-Ion) battery provides the main power source in your
NEC Versa TXi computer. Your system comes with a 3-cell Lithium-Ion battery that
fits into the battery bay on the rear of your system. An optional 15-cell Maximum-Life
Lithium-Ion Battery is also available. The Maximum-Life Battery slides under the
system, with connectors that fit into the battery bay on the rear of your system. See
Appendix B for a list of battery specifications. In addition to this battery, the CMOS
battery also provides system power. For information about installing or removing the
standard main battery, see the section, "Replacing the Battery" later in this chapter. For
more information about the primary batter see the section, "Using the Primary Battery."
For information about installing the extended life main battery, see the installation
instructions that are packaged with it.

Secondary Battery

You can install an optional secondary Lithium-Ion battery in the NEC VersaBay IV slot
on the right side of your NEC Versa notebook. Attaching a second fully charged battery
increases battery life while you are away from an AC power source. For more
information about the secondary battery, see the section, "Using the Secondary
Battery." For information about installing a secondary battery see "Installing a Device
in the VersaBay IV Slot" in Chapter 5, or the installation instructions that are packaged
with battery.

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 notebook is connected to AC power.
The CMOS battery may discharge completely if the NEC Versa notebook remains
unused for approximately two months.
2-6 Getting Started