Versa 4200 Series User's Guide - Support

Internal Li-Ion Batteries
A Lithium Ion (Li-Ion) battery provides the main power source in your NEC
Versa 4200 computer. See Appendix B for a list of Li-Ion battery specifications.
In addition to this battery, the CMOS battery and bridge battery provide
system backup.
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 lasts approximately
two years.
Only an authorized NEC dealer can change a CMOS battery.
Bridge Battery
The bridge battery saves your system status in Suspend mode, retaining
memory contents and system status while the spent battery is removed and
replaced. This gives you time to install a fully charged battery or plug in AC
power when your battery charge becomes low.
Only an authorized NEC dealer can change a bridge battery.
SYSTEM CARE
The NEC Versa 4200 is a durable, dependable system built for extensive use
and travel. Follow these guidelines to maintain the condition and performance
of your computer.
Precautions
Follow these precautions when using your NEC Versa 4200, AC adapter,
and the Li-Ion battery. For additional information, contact the NEC Customer
Technical Support Center.
NEC Versa 4200 and AC Adapter
„ Avoid dropping or bumping the computer or the AC adapter.
„ Do not stack heavy objects on the computer.
„ Avoid moving the NEC Versa 4200 during system operation, especially
while the hard disk or diskette drive is being accessed.
Getting Started 1-21