Install Batteries in the X2-SDL Data Logger

The battery compartment of the X2-SDL data logger accommodates (16) D-Cell Alkaline batteries for system power.  These batteries should be replaced once the reported secondary power falls to 8V to avoid data collection interruption.

  1. Locate the white battery lid at the top of the X2-SDL.
  2. Rotate the lid counter-clockwise to remove it.
    1. Note: Due to the double O-ring lid seal, this will take significant effort to loosen.
    2. The 3/16″ ball-point hex driver included in the X2-SDL maintenance kit can be inserted into either of the two recesses in the lid to provide extra leverage.

Figure 1: Remove the white battery lid.


  1. Note the polarity labels affixed to the inside of each battery tube prior to inserting fresh D-cell batteries.

Figure 2: Insert (16) D-cell batteries.


  1. Thread the battery lid back on to the top bulkhead of the X2-SDL.
  1. Rotate the lid clockwise and tighten securely using the hex driver.
    1. Once the large washer at the bottom of the white battery lid makes contact with the battery terminals, power will be applied to the X2-SDL and a buzzer will sound once confirming it is running.