NEC SX Service And Reference Manual page 31

!
There is a danger of explosion if the battery is incorrectly
replaced. Replace only with the same or equivalent type
recommended by the manufacturer. Discard used batteries
according to "Battery Replacement" at the back of this
manual.
To avoid personal injury and property damage, read these
battery precautions on handling, charging, and disposing
Li-Ion batteries.
T
Keep the battery away from heat sources including direct
sunlight, open fires, microwave ovens, and high-voltage
containers. Temperatures over 140º F (60ºC) may cause
damage.
T
Do not drop or impact the battery.
T
Do not disassemble the battery.
T
Do not solder the battery.
T
Do not puncture the battery.
T
Do not use a battery that appears damaged or deformed,
has any rust on its casing, is discolored, overheats, or
emits a foul odor.
T
Keep the battery dry and away from water.
T
Keep metal objects away from battery terminals. Metal
objects in contact with the terminals can cause a short
circuit and damage.
T
If the battery leaks:
If the battery leaks onto skin or clothing, wash the area
immediately with clean water. Battery fluid can cause a
skin rash and damage fabric.
If battery fluid gets into eyes, DO NOT rub; rinse with
clear water immediately and consult a doctor.
Take extra precautions to keep a leaking battery away
from fire. There is a danger of ignition or explosion.
WARNING
System Configuration and Setup 2-9