The display shows Error Code 6

If your WANDLER electric scooter displays Error Code 6, this indicates battery undervoltage. In this case, the scooter detects that the battery voltage is too low or not stable enough.

Often, the error can be resolved by fully charging the battery. Additionally, the battery connection, contacts, and the general battery condition should be checked.

What does Error Code 6 mean?

Error Code 6 indicates that the battery voltage is too low. The controller requires a stable voltage for the electric scooter to start and run reliably. If the voltage is too low, the system may generate an error message.

This can happen if the battery is deeply discharged, has not been charged for a long time, the connection to the battery is not secure, or the battery no longer provides the necessary power.

Common causes for Error Code 6

• Battery is too deeply discharged
• Battery has not been charged for a long time
• Battery connection is not seated correctly
• Contact problem at the battery connection
• Dirty or moist contacts
• Battery no longer supplies sufficient voltage
• Battery condition has deteriorated

Step 1: Fully charge the battery

First, fully charge the battery. Use the appropriate charger and ensure that the charging process starts normally. The battery should not just be briefly topped up, but fully charged.

• Use appropriate charger
• Connect charger correctly
• Complete the charging process fully
• Do not just briefly charge the battery
• Turn the scooter back on after charging

Step 2: Check battery connection

If the battery has been charged and the error still persists, check the battery connection. The battery must be correctly inserted and the connection to the vehicle must be secure.

• Insert battery correctly
• Check battery connection for secure fit
• Inspect main plug
• Check for loose or incomplete contacts
• Do not insert battery at an angle

An improperly seated battery connection can cause the voltage not to reach the controller correctly. This can trigger Error Code 6.

Step 3: Check contacts

Then check the visible contacts on the battery and on the vehicle. The contacts should be clean, dry and free from visible damage.

• Check contacts for dirt
• Check for moisture
• Take visible corrosion seriously
• Check plugs and sockets for damage
• Do not clean or bend contacts forcefully

Step 4: Check battery condition

If the battery has been fully charged, the connection is correct, and Error Code 6 still appears, the battery's condition should be checked.

A battery can lose power over time. Also, long periods of inactivity, deep discharge, cold, or improper storage can cause the voltage to drop too much under load.

• Check battery for visible damage
• Check casing for deformations
• Note unusual heating
• Observe charging behavior
• Check range and power degradation
• If unusual behavior is observed, do not continue to use

Step 5: Restart scooter

After the battery has been fully charged and the connection checked, turn the scooter on again. If Error Code 6 is no longer displayed, the cause was most likely a low battery level or an improperly seated battery connection.

If the error persists despite a full battery, the battery should be checked more closely.

If Error Code 6 still appears

If the battery is fully charged, correctly inserted, and the connections are clean, there may be a problem with the battery itself. For example, the battery may no longer be able to deliver the necessary stable voltage.

In this case, the battery should not be further stressed. An inspection by a qualified person or WANDLER service is advisable, especially if the error occurs repeatedly.

Charging, storing, and checking the battery

To prevent undervoltage, the battery should be regularly charged and stored properly. Especially during longer periods of inactivity, the battery should not be stored fully discharged.

• Charge battery regularly
• Do not leave battery fully discharged permanently
• Store battery in a dry and frost-free place
• Recharge occasionally during longer periods of inactivity
• Only use the appropriate charger
• Contact service if charging behavior is unusual

Conclusion

Error Code 6 on the WANDLER electric scooter indicates battery undervoltage. In most cases, the battery should first be fully charged. Afterwards, the battery connection, contacts, and battery condition should be checked.

If the error persists despite a full battery and a correctly seated connection, the battery should be checked more closely. It is then possible that the battery no longer supplies sufficient voltage or there is a contact problem.