GE Grid Solutions
GE Information 994-0081-3.00-21
Battery Replacement
WESDAC
(Main Board)
Battery
The WESDAC Board is mounted vertically immediately behind the front
panel. It is the first component visible when the front panel is removed.
Locate the Panasonic
®
BR
2
/
3
A (or equivalent) lithium battery near the top-
left of the Type III WESDAC board. It is provided to maintain the contents of
the NVRAM when the unit is powered down.
Refer to Battery Replacement on page 113 for information on changing this
battery.
20 MB Memory
Expansion
Board Battery
Locate the Tadiran
TL-2100S (or equivalent) lithium battery on the 20 MB
Memory Expansion Board. It is provided to maintain the contents of the
NVRAM when the unit is powered down.
Refer to Battery Replacement on page 113 for information on changing this
battery.
Battery
Checking
Check battery voltage using a meter or other measuring device that has a high
input impedance (10 MΩ or higher).
Cleaning &
Handling of
Lithium
Batteries
• Use non-conductive cleaning solution to prevent deterioration of battery
performance.
• Dry batteries at a temperature below 85° C to prevent seal deformation that may,
in turn, result in leakage.
• Avoid:
− inversion of polarity
− exposure to high temperatures, such as soldering or spot-welding
− excessive force to terminals
• Wear gloves or finger caps when handling batteries to keep them clean.
• For long-term storage
− keep at temperatures and humidity below normal
− avoid shorting or loading while stored.
Battery
Replacement
If the battery is disconnected, or if the D25 is never powered down, the life of
the battery should exceed five years.
The life of the battery will be severely shortened if the battery is left
connected while the D25 is powered down for extended periods or stored.
The battery can be changed with power applied to the D25, so that service is
not interrupted.
Note: The status of the battery is provided during the D25 start-up sequence.
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