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Battery Levels and Operations

Essential guidance for optimizing FD20 operation: manage battery levels and maintain clean solar panels to maximize performance, efficiency, and field uptime throughout the season.

The robot automatically initiates and halts its operations depending on the current battery charge level.

The FD20 is fitted with two different battery technologies

  • Until model year 2020 - Equipped with 4 pcs. AGM batteries

  • From model year 2021 - Equipped with 2 pcs. Lithium batteries

To determine how and when the robot pauses, shuts down, or automatically resumes its work, four distinct battery levels are monitored:

  • FULL CHARGE LEVEL (28V Lithium, 26V AGM) – Indicates the batteries are fully charged, and no additional energy can be stored.
  • IDLE LEVEL (24V Lithium, 22.5V AGM) – After reaching this level, the FD20 suspends autonomous functions after 10 minutes, while essential components remain active. This enables the robot to automatically resume operation when conditions are suitable, such as the following morning.
  • SHUTOFF LEVEL (23V Lithium, 21V AGM) – At this threshold, the robot powers down completely to protect battery longevity. Manual restart in the field is required once the batteries are sufficiently recharged.
  • RESUMING LEVEL (26V Lithium, 24.5V AGM) – When the battery voltage returns to this point, the FD20 will automatically restart autonomous operations—except if it previously reached SHUTOFF LEVEL, in which case manual activation is necessary in the field.

TIPS AND TRICKS 😁👇

For best performance and battery longevity, always restart operations only when the batteries have reached at least 26V. This ensures the robot has adequate energy reserves to operate efficiently while it continues charging from solar power.

    TIPS AND TRICKS 🤓👍

    Regularly ensure the FD20’s solar panels are clean, especially at the start of the season. Keeping them free from dust and debris optimizes solar charging and can significantly extend your robot’s operating time.