How do I replace the battery in my AV-200 solar engine?

Step-by-step instructions for safely removing and replacing the battery in the AV-200 solar engine.

⚠ Remove metal jewelry — bracelets, watches, and rings — before handling the battery. Contact with battery terminals can cause a short circuit, sparks, or burns.

Remove the old battery

  1. Loosen the solar engine door screws and swing the door open.
  2. Release the black battery strap securing the battery to the shelf and move it out of the way.
  3. Slide the battery out of the solar engine toward you.
  4. Disconnect the quick-connect battery wires from both battery terminals — pull the connectors straight off. Do not pull by the wire.
    1. The sign will stop flashing once the battery is disconnected.

Install the new battery

  1. Connect the quick-connect battery wires to the correct terminals:
    1. Red wire → positive terminal (+)
    2. Black wire → negative terminal (−)
  2. Slide the new battery onto the battery shelf inside the solar engine. Insert it with the terminals facing toward the door — terminals toward you.
  3. The sign will begin flashing immediately once the battery is connected. Confirm it is flashing before closing the door.
  4. Fasten the black battery strap over the battery to hold it securely in place.
  5. Swing the solar engine door shut and tighten the door screws to secure it.

✕ Do not reverse battery polarity. Connecting the red wire to the negative terminal or the black wire to the positive terminal will damage the system.

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