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Take extra precautions to keep a leaking battery away from fire. There is a
!
danger of ignition or explosion.
Precautions for Recharging the Battery
Adhere to the following precautions when recharging the primary or secondary battery.
Charge the battery for the specified charge time only (8 hours when on, 4.5 hours
!
when off).
During charging, keep the environmental temperature between 32° F and 104° F
!
(0° C to 40° C).
System Batteries
Your NEC Versa notebook is equipped with a primary Lithium Polymer battery and a
secondary Lithium Ion battery to help prevent data loss. Only the secondary battery is
removable.
In addition, the CMOS battery also provides system power. See Appendix B for a list
of battery specifications.
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. Plugging in the AC power to the system will
recharge the CMOS battery.
Normally when the CMOS gets erased, you must press F2 during the boot cycle to reset
the BIOS settings. You will need to reset the clock/calendar if the battery is totally
discharged, but other settings can be restored by choosing "Load Setup Defaults" from
the BIOS Exit menu.
Optional Battery
Your NEC Versa system allows you to remove and replace the secondary Li-Ion
battery with an optional Lithium Ion battery.
2-12 Getting Started
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