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EON ONE Pro Battery Check and Reset Process

Written by Gary Brindley

Updated at December 23rd, 2025

Table of Contents

Checking the Charge Level Attempt to Charge the Battery

Checking the Charge Level

  1. Remove the EON One Pro from the carton
  2. Push the latch lever and lift the cover, then remove the spacers and column speaker array from the back of the unit
  3. Attach the column speaker array as shown below.    No need for the spacers.
  4. Insure the 115/230 voltage select switch is in the proper setting based on the region of operation.
  5. Connect the female end of the power cable to the EON ONE PRO and plug the male end into a wall socket.
    Ensure the Power switch is turned off and the power LED is not lit.
  6. The Battery Level meter will illuminate, indicating the unit is charging.
  7. If the indicator shows at least 30% charge (3 bars), then the battery is OK and the unit is good to repack for stock.
  • If upon power on all LED's flash RED once but the last LED continues flashing, then the battery is in a “false charge" mode where it seems like it is charging but the battery will never charge.   The battery may be recharged following the procedure below in section 2.   
  • If all the LEDs on the battery level indicator are all flashing RED, then the battery is damaged and dead, and impossible to recover.  It will need to be replaced.
  • If you do not see any LEDs present, then the battery needs to be charged.   See section 2.

Attempt to Charge the Battery

Typically, when the EON one Pro is plugged into AC Power, the battery charge will begin.  If the unit sat for too long and the battery depleted, the unit will show all LED's flash RED once then enter a “false charge" mode where it seems like the battery is charging but the last LED will continue flashing and the battery will never charge.   

  1. Charge the unit for approximately 1 hour or until a full charge is (falsely) shown.  The last LED will always flash regardless of how long you charge.
  2. Switch the unit on and run the speaker until the battery is completely drained. This should take approximately 2 hours.
  3. Connect the IEC power cable and note no RED lights and only a progressive green led charge mode.   A full charge takes roughly 5 hours.
  4. The unit will be completely charged and ready to go now if everything is in working order.   

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Table of Contents

Checking the Charge Level Attempt to Charge the Battery

Related Articles

  • Connecting EON ONE MK2’s Together
  • EON One Pro Battery Replacement
  • Pairing Bluetooth Audio With Your EON ONE MK2 Column Speaker
  • Advantages of AC Power Over Battery on the EON One MK2
  • Battery Warranty for the EON One Pro

Related Articles

  • Connecting EON ONE MK2’s Together
  • EON One Pro Battery Replacement
  • Pairing Bluetooth Audio With Your EON ONE MK2 Column Speaker
  • Advantages of AC Power Over Battery on the EON One MK2
  • Battery Warranty for the EON One Pro
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