Data Buoy Storage Requirements

The following buoy storage requirements are required when storing a CB-Series data buoy with an X2-CB data logger:

Storage Requirements

  1. Store the buoy in a dry environment that is kept above freezing. A climate-controlled location may be necessary.
    1. Extremely cold temperatures can negatively impact the performance of the batteries.
    2. Cold or excessively fluctuating storage temperatures can weaken the PVC joints of the deployment pipes.
  1. Ensure the vent is clear of all obstructions.
    1. If the vent is clogged, high-pressure combustible gas can build up within the data well due to outgassing from the batteries.
    2. If planning to remove the plate from the data well, DO NOT use power tools.
  1. Disconnect the 6-pin solar panel plug from the buoy’s SOLAR port as soon as the buoy is removed from service.
    1. The solar panel cable plug has an internal jumper that acts as a switch to supply onboard electronics with power.
      • If the solar panel cable is left connected during storage, the batteries inside the data well will die and require replacement.
  2. Power OFF any LED beacons that are affixed to the buoy solar tower.
    1. The included IR beacon remote can be used to accomplish this according to the commands listed in the M550 or M650H Quick Start Guides.
    2. If a remote is not available, remove the beacon and place it outdoors where it can receive consistent sun to maintain charge.
M550 Solar Marine Light product page

Figure 1: M550 Solar Marine Light

M650 Solar Marine Light product page

Figure 2: M650 Solar Marine Light


  1. Check the voltage of the SLA batteries in the buoy data well monthly and ensure they remain above 12V. Follow the link below for proper guidance.
    1. Verify Battery Voltage of a CB-Series Buoy

Preparing for Re-Deployment

  1. Top off the charge of the buoy batteries every 2-3 months by:
    1. Connecting a NexSens CB-Series Battery Float Charger Kit*
    2. Reconnecting the solar panel and moving the buoy outdoors into the sun.*

Figure 3: NexSens CB-Series Battery Float Charger Kit


*While charging, the data logger will be running. It is recommended that:

  1. Protect all cable and port connections.
    1. Inspect all sensor ports and cable connections ensuring all O-rings are present and there are no signs of moisture or damage.
    2. Cover all logger or cable receptacle ports with a UW-plug to keep moisture out.
    3. Keep all system cable O-rings and connectors clean by covering them with the included red (8-pin) or yellow (6-pin) polymer caps.
      • If these caps are no longer accessible, any means of shielding the connectors from debris that does not damage the O-rings is acceptable.
    4. Use the O-ring grease included in the maintenance kit as needed to re-grease the cable/plug connector O-rings.