Rapid Blinking Red LED on Mesa Pro

23 Aug 1970

This article outlines possible causes and recommended solutions when the Mesa Pro red LED indicator blinks rapidly three times in a row, stops, and then repeats.

Possible Causes

• The battery may be low or completely discharged. You may see the following warning on your Mesa Pro.
  

  

• The battery door is not securely attached.

• The battery detect magnet in the battery door is missing.

Recommended Solutions

• If the battery is low or discharged, charge the battery using the AC wall charger or USB-C charger until the battery is charged sufficiently. Once the battery is charged enough to keep the Mesa Pro powered on, you will see the following message.
  

  

  
  Note: If you use a USB-C charger, ensure it can deliver 20 V with a minimum of 60 Watts.

• Verify the battery and battery door are installed properly, as outlined in section 2.14.2 of the Mesa Pro User Manual.

• Verify the battery detect magnet is present in the battery door. If the magnet is missing, the battery door will need to be replaced by contacting support@junipersys.com.
  

  

Reviewed & Approved: JB, 04FEB2026