Test a CB-Series Buoy Solar Tower

This verification process applies to all CB-Series buoy solar towers from the CB-150 up to the CB-1250. Pictures depict a CB-450 tower.

    1. Remove the solar tower from the buoy (optional) and verify all panels are clear of debris.
    1. Use cardboard or cloth to shade two of the three solar panels on the buoy and move the tower into sunlight.

CB-450 tower with a single panel exposed to the sun.


    1. Record the DC voltage observed between Pins 2 (V+) and 3 (GND) of the solar tower’s UW-6 plug cable.

Measure between Pin 2 (+) and Pin 3 (-) of the UW6-plug solar tower cable.


Measuring DC Voltage on a CB-450 tower panel.


      1. Repeat this process two more times, rotating the cardboard/cloth around until all three panels have been isolated and tested.
      2. Typical panel output in direct sunlight for all buoys is 18-22V.


    1. Switch the positive voltmeter lead over to the 10A port and change the setting to measure DC Amps.


    1. Measuring again between Pin 2 (+) and Pin 3 (-), record the current output of each isolated panel.

Measuring DC Amperage on a CB-450 tower panel.


      1. The expected output for each size panel in full sun and in a horizontal orientation listed below. The observed output (given the angle at which each panel is mounted to the tower) will be somewhat lower:
        • CB-150 [8.3W]- between  0.37-0.46A
        • CB-450 [13W] – between  0.59-0.72A
        • CB-650 [30W]- between  1.36-1.67A
        • CB-950 [44W]- between  2-2.4A
        • CB-1250 [57W]-between 2.59-3.17A


  1. If one or more of the three panels show lower than expected voltage or current output, inspect the surface of panel for visible damage.