This article explains how to troubleshoot the E49 “The Charger Does Not Match” error on an Aventon eBike.

Use this article if your bike:

• Shows an E49 error code
• Displays a charger mismatch warning
• Does not charge correctly
• Stops charging unexpectedly

If you are unsure of your Aventon model, please confirm your model before continuing.

Stop troubleshooting immediately if anything looks unsafe, damaged, overheated, swollen, or smells burnt.

Before You Start

Please prepare the following:

• Order number
• Aventon model
• Photo or video of the E49 error code
• Photo of the battery area
• Photo of the charger and charger label
• Photo of the charger connection and cable
• When the issue first appeared
• Whether the bike powers on
• Whether the battery charges
• Whether the charger light turns on
• Whether the issue happened after transport, storage, water exposure, crash, impact, modification, or third-party repair
• Photos of visible damage

Safety Warnings

• Do not continue charging if the charger, battery, or cable appears damaged.
• Do not use a charger that becomes excessively hot, smells burnt, or shows visible damage.
• Do not open sealed electrical components.
• Do not work on wiring while the bike is powered on or charging.
• Stop and contact support if you are unsure.

What This Error Means

The E49 “The Charger Does Not Match” error means the bike has detected a charger compatibility or charging system issue.

This may happen if:

• The wrong charger is being used
• The charger is damaged
• The battery is damaged
• The charger cable or connection is damaged

Possible Causes

Possible causes include:

• Incorrect charger
• Damaged charger
• Damaged battery
• Damaged charger cable
• Broken connector
• Worn cable
• Internal open circuit
• Visible cable or connector damage

Troubleshooting Steps

Step 1 – Confirm the Correct Charger Is Being Used

Check whether the correct Aventon charger for your specific bike and battery is connected.

If yes – The correct charger is being used

Continue to Step 2.

If no – The incorrect charger is being used

Stop charging the bike.

Use the correct charger for your Aventon bike and battery.

Reconnect the charger and check whether the E49 error remains.

If the issue clears

The issue was likely caused by an incompatible charger.

Monitor the bike during future charging.

If the issue remains

Continue to Step 2.

Step 2 – Inspect the Charger, Battery, and Charging Cables

Turn the bike off before continuing.

Inspect the accessible:

• Charger cable
• Charger connector
• Battery charging port
• Battery housing

Check for:

• Loose connections
• Bent pins
• Worn cables
• Broken connectors
• Dirt or contamination
• Visible damage
• Burning smell
• Overheating

If yes – Visible damage is found

Continue to the relevant section below:

• Charger or charger cable damage
• Battery damage

If no – No visible damage is found

Reconnect the charger securely and check whether the E49 error remains.

If the issue clears

The issue was likely caused by a loose or poor charging connection.

Monitor the bike during charging.

If the issue remains

Continue to Step 3.

Visible Damage Troubleshooting

Step 3 – Charger or Charger Cable Damage Found

Inspect the charger and charging cable for:

• Cuts
• Worn insulation
• Loose connectors
• Bent pins
• Burn marks
• Overheating
• Physical damage

If yes

Stop using the charger immediately.

Please contact our support team with photos of the charger and cable damage.

If the issue remains

The battery system may also require further inspection.

Please contact support.

Step 4 – Battery Damage Found

Inspect the battery for:

• Swelling
• Cracks
• Water exposure
• Burning smell
• Overheating
• Damaged charging port

If yes

Stop using the battery immediately.

Do not continue charging or riding the bike.

Please contact our support team with photos/videos of the battery and charging area.

If the issue remains

The charger system may also require further inspection.

Please contact support.

Step 5 – Check Whether the Error Persists

Reconnect the charger securely and check whether the battery charges normally.

If yes – The E49 code still appears

The issue may involve:

• The charger
• The battery
• The charging connection

Please contact our support team with the photos/videos listed below so we can review the next step.

If no – The error no longer appears

The issue was likely caused by a temporary connection or compatibility issue.

Continue monitoring the bike during charging.

When To Contact Support

Please contact support if:

• The E49 error remains after completing these checks
• The battery does not charge
• The charger does not power on
• The charger or battery overheats
• There is visible cable or connector damage
• The bike has been exposed to water, crash, impact, transport damage, modification, or third-party repair
• You are unsure how to safely complete a step

If the issue remains after these steps, please contact our support team and include the photos/videos listed below.

What To Send Support

Please send:

• Order number
• Aventon model
• Photo/video of the E49 error code
• Photo of the battery area
• Photo of the charger and charger label
• Photo of the charger cable and connector
• Photos of visible damage
• Confirmation of whether the bike powers on
• Confirmation of whether the battery charges
• Confirmation of whether the charger light turns on
• Confirmation of whether the correct Aventon charger is being used
• Confirmation of whether the issue happened after water exposure, crash, impact, modification, or third-party repair
• Confirmation of the troubleshooting steps already completed

Important Safety Notes

• Do not continue charging if the E49 error remains.
• Do not use the bike if the battery or charger is overheating, smoking, swollen, or visibly damaged.
• Do not open the battery, charger, controller, or sealed electrical components.
• Do not force connectors.
• Do not work on wiring while the bike is powered on or connected to the charger.
• Contact support if you are unsure.