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D400 Substation Data Manager User's Manual  

 

  

Warning!  Ensure that all hazardous live circuits are isolated or disconnected 
before attempting battery replacement

. 

1. 

Power down the D400. 

2. 

Remove the D400 main module from the chassis. 

3. 

Using a plastic or other non-conductive tool, pry the black plastic clip holding the 

battery away from the battery holder BT1. When free, the battery and clip can be 
removed together. 

4. 

Remove the clip from the battery and keep it. 

5. 

Place the new battery into the battery holder, ensuring polarity is correct. 

6. 

Replace the clip and press down until it clicks into the retaining notches in the battery 
holder. 

7. 

Replace the D400 main module. 

8. 

Power up the D400. 

To check battery voltage, use a meter or other measuring device that has a high input 
impedance (10 Mohm or higher). 

•  Wear gloves or finger caps when handling batteries to keep them clean. 
•  Use non-conductive cleaning solution to prevent deterioration of battery 

performance 

•  Dry batteries at a temperature below 85 °C to prevent seal deterioration that may, in 

turn, result in leakage 

The D400 lithium battery contains harmful chemicals.  

The Lithium battery is recyclable. Dispose of battery according to local waste 
management regulations. 
 

If the battery is disconnected, or if the D400 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 D400 is powered down for extended periods or stored. 
For long-term storage: 
•  Keep the equipment at temperatures and humidity below normal 
•  Avoid shorting or loading while stored