The G2-RAIN battery pack is designed to last up to 4 years with the recommended transmission settings. When it becomes time to replace the battery pack please follow the below steps.

  1. Purchase a G2-BAT-2D pack
  2. Remove the G2-RAIN from the 2″ NPT pole
  3. Rest the G2-RAIN on the rain gauge with the pipe threading facing up
  4. Power down the G2-RAIN-RTU by turning the power screw counterclockwise until the top of the O-ring can be seen
  5. Remove the (4) 1/4-20 x 5/8″ socket head cap screws using a 3/16″ hex driver
  6. Carefully remove the G2-RAIN-RTU bottom bulkhead
    • Note that the bulkhead is attached to the rain gauge by the cable so ensure it isn’t pulled too forcefully
    • Do not touch the PCB as static shock can cause permanent damage to the device
  7. Disconnect the existing battery pack by gently pressing down on the clip and pulling the connectors apart
  8. Cut the cable ties holding the G2-BAT-2D to the battery plate
  9. Place the new battery pack on the plate and secure with new cable ties
  10. Connect the pack by gently pressing the connectors together
    • Ensure the red wire aligns with the red wire and the black with the black
  11. Replace the G2-RAIN-RTU bottom bulkhead
    • Check that the O-ring is free of debris and has sufficient O-ring grease
  12. Replace theĀ (4) 1/4-20 x 5/8″ socket head cap screws using a 3/16″ hex driver
  13. Power the G2-RAIN-RTU by turning the power screw clockwise until it stops
  14. After 1 minute ensure the WQData LIVE diagnostic parameterĀ Last Updated has a new time stamp
    • On a power cycle, the device automatically connects to WQData LIVE and checks for updates
  15. Re-deploy the device


The battery pack should be disposed of properly. The pack contains Lithium Metal batteries and should be dealt with accordingly. Please check local regulations regarding the proper disposal of Lithium Metal batteries. Ensure all batteries are fully discharged before disposal to prevent possible explosions or fires.

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