Q: What is the battery life of the STERWINS 400M² 18V robotic mower?

The STERWINS 400M² 18V robotic mower is equipped with a 18V lithium-ion battery from the Power-X-Change series . The actual autonomy depends on several factors, but the manual recommends a guideline value of 8 hours per day for an area of 500 m² . This duration may vary depending on the size, complexity of your garden, grass moisture, and blade condition. The robot intelligently manages its autonomy: As soon as the battery charge level drops to 30% , the robot automatically returns to the charging station. During operation, the charge level is displayed in real-time on the robot's LCD screen. The LED of the charging station lights up red during charging and turns green once charging is complete . The charging system works in two ways: automatically via the built-in charging station, or manually with the external Power-X-Charger for independent battery use. For prolonged periods of inactivity, fully charge the battery before storage, then keep it at a minimum charge level of 40% , in a dry place with a temperature between +10°C and +40°C .

Q: How to resolve the motor error on the STERWINS 800M² 18V robotic mower?

The message “Motor Error” (or “Motor Overcurrent”) means that the robot has detected an overload on the cutting motor and has gone into safety mode. Here are the steps to follow in order: 1. Restart the robot Set the main switch (7) to OFF , wait a few seconds, then switch it back to ON . This is sometimes sufficient if the overcurrent was temporary. 2. Check the grass height The STERWINS 800M² 18V can only mow grass that is less than 60 mm in height. If your lawn is taller, start with a traditional mower before restarting the robot. 3. Increase the cutting height The cutting height is continuously adjustable from 20 to 60 mm . Set it to the maximum (60 mm) to reduce the load on the motor, then gradually decrease it during subsequent passes. 4. Clean the knife disc (11) and the wheels Grass, dirt, or debris stuck under the knife disc (11) or around the wheels can cause an overload. Clean them thoroughly (robot off, main switch on OFF). The manual recommends cleaning every 2 weeks at most. 5. Check for mechanical blockages Ensure that no obstacle is physically blocking the knife disc or the rear wheels. Manually rotate the disc to confirm that it turns freely. If the error persists after all these checks, the cause may be an internal motor failure or a weakened battery (the autonomy is about 30 to 40 minutes and an end-of-life battery can cause overcurrents). In this case, contact the STERWINS after-sales service.

Q: What is the default PIN code for the STERWINS 400M² 18V robotic mower and how do I reset it?

The STERWINS 400M² 18V robotic mower is equipped with a security PIN code to prevent unauthorized use. Default PIN Code The PIN code initially configured on this model is usually 0000 . This code must be entered to unlock the mower and allow it to operate. Changing and Resetting the PIN Code If you have changed the PIN code and cannot remember it, you need to reset the robot to factory settings to regain access. The reset procedure varies by model, but it often involves a reset button or a specific sequence to perform on the control panel. After resetting, the PIN code returns to its default value of 0000 . Safety Tips Change the default PIN code at the first use to secure your device. Carefully note your new PIN code to avoid any lockout.

Question 1

What is the battery life of the STERWINS 400M² 18V robotic mower?

Accepted Answer

The STERWINS 400M² 18V robotic mower is equipped with a 18V lithium-ion battery from the Power-X-Change series. The actual autonomy depends on several factors, but the manual recommends a guideline value of 8 hours per day for an area of 500 m². This duration may vary depending on the size, complexity of your garden, grass moisture, and blade condition.

The robot intelligently manages its autonomy:

As soon as the battery charge level drops to 30%, the robot automatically returns to the charging station.
During operation, the charge level is displayed in real-time on the robot's LCD screen.
The LED of the charging station lights up red during charging and turns green once charging is complete.

The charging system works in two ways: automatically via the built-in charging station, or manually with the external Power-X-Charger for independent battery use. For prolonged periods of inactivity, fully charge the battery before storage, then keep it at a minimum charge level of 40%, in a dry place with a temperature between +10°C and +40°C.

Question 2

Can the STERWINS 400M² 18V robotic lawn mower mow multiple areas?

Accepted Answer

Yes, the STERWINS 400M² 18V robotic lawn mower can definitely manage multiple mowing areas.

Multiple Mowing Areas

According to its manual, you have the option to choose between a primary area (main area) and a secondary area (additional area). The robot offers maximum flexibility with up to 3 different starting points on the boundary wire.

For each area, you can:

Select a starting point on the boundary wire
Configure the distances and mowing frequencies
Set the frequency at which the robot starts its work from that point

Management of Secondary Areas

Secondary areas (separate surfaces) operate independently. However, they require you to manually place the robotic lawn mower in the relevant area before activating the corresponding program.

Edge Mode

The robot also has a cutting mode dedicated to edges for a clean result before the main mowing.

Question 3

What are the contact details for the after-sales service for the STERWINS 800M² 18V robotic mower?

Accepted Answer

The manual for the STERWINS 800M² 18V robotic mower does not mention a direct phone number for after-sales service. However, it provides the following official contact details:

Official STERWINS After-Sales Service

The STERWINS 800M² 18V robotic mower is distributed and guaranteed by Einhell France SAS. The after-sales service is managed through their dedicated portal:

STERWINS After-Sales Site: www.einhell-service.com/fr_FR/page/sterwins-robot-tondeuse - you can report your malfunction and arrange for assistance
Warranty Address: Einhell France SAS, ZAC Paris Nord, 22 Avenue des Nations - Le Rabelais, BP 59018 - 93420 Villepinte
Service Center: Einhell Compiègne, Route de Choisy 3, 60200 Compiègne

Warranty: your robot is covered for 3 years from the date of purchase (2 years for the battery, extendable to 3 years if you register the product on the Einhell website).

The manual does not provide a phone number. The recommended official channel remains the einhell-service.com website, where you can submit your request directly for this model.

Question 4

How to resolve the motor error on the STERWINS 800M² 18V robotic mower?

Accepted Answer

The message “Motor Error” (or “Motor Overcurrent”) means that the robot has detected an overload on the cutting motor and has gone into safety mode. Here are the steps to follow in order:

1. Restart the robot

Set the main switch (7) to OFF, wait a few seconds, then switch it back to ON. This is sometimes sufficient if the overcurrent was temporary.

2. Check the grass height

The STERWINS 800M² 18V can only mow grass that is less than 60 mm in height. If your lawn is taller, start with a traditional mower before restarting the robot.

3. Increase the cutting height

The cutting height is continuously adjustable from 20 to 60 mm. Set it to the maximum (60 mm) to reduce the load on the motor, then gradually decrease it during subsequent passes.

4. Clean the knife disc (11) and the wheels

Grass, dirt, or debris stuck under the knife disc (11) or around the wheels can cause an overload. Clean them thoroughly (robot off, main switch on OFF). The manual recommends cleaning every 2 weeks at most.

5. Check for mechanical blockages

Ensure that no obstacle is physically blocking the knife disc or the rear wheels. Manually rotate the disc to confirm that it turns freely.

If the error persists after all these checks, the cause may be an internal motor failure or a weakened battery (the autonomy is about 30 to 40 minutes and an end-of-life battery can cause overcurrents). In this case, contact the STERWINS after-sales service.

Question 5

How to reset or clear an error message on the STERWINS 800M² 18V robotic mower?

Accepted Answer

To clear the error message, the procedure is simple and quick:

Turn off the robot by setting the main switch to OFF
Wait a few seconds
Reactivate the main switch to ON

The system will restart and the error message will disappear. There is no dedicated 'clear' or 'reset' button - resetting via the main switch is the only method.

Important: If the error message reappears immediately after restarting, it means the problem is not resolved. Before restarting the robot:

Clean the blade disk (dried grass, debris)
Check that the grass is not too high (max 60 mm recommended)
Inspect the wheels to ensure none are blocked
Check the charging contacts (status of the boundary wire)

Once these points are checked, restart the robot. If the error persists, consult the specific error diagnosis (motor, battery, or blockage) corresponding to your situation.

Question 6

How to resolve the battery error on the STERWINS 800M² 18V robotic mower?

Accepted Answer

The battery error on your STERWINS 800M² 18V robotic mower can result from several causes. Here’s how to identify and resolve this issue:

1. Check the battery connection

Ensure that the battery is properly inserted into the compartment. Remove it and then reinsert it firmly to ensure a good contact.

2. Charge the battery

Place the robot on its charging station and let the battery charge completely for several hours. A weak battery can trigger this error.

3. Inspect the battery

Examine the battery for visible signs of damage, such as swelling, leakage, or corrosion.
If you notice any anomalies, it is advisable to replace the battery with a new compatible one.

4. Restart the robotic mower

Turn off the robot, wait a few minutes, then turn it back on. This may help reset the error.

5. Check the operating conditions

Avoid using or charging the robot in extreme temperatures (very cold or very hot), as this can affect the battery and cause errors.

If the error persists despite these checks, it is recommended to contact customer service for a more in-depth diagnosis or possible battery replacement.

Question 7

What to do in case of a functional error on the STERWINS 400M² 18V robotic mower?

Accepted Answer

If your STERWINS 400M² 18V robotic mower displays a functional error, here are the steps to follow to try to resolve the issue:

1. Restart the robot

Completely turn off the robotic mower, wait about 2 minutes, then turn it back on. This often helps to temporarily reset minor errors.

2. Check the battery

Make sure the battery is sufficiently charged.
If the charge is low, place the robot on its charging station until it is fully charged.

3. Inspect the sensors and blades

Clean the sensors to remove any dirt, dust, or obstruction that could interfere with their operation.
Check that the blades are not blocked by debris (leaves, branches, etc.) and that they are not damaged.
If necessary, clean or replace the blades.

4. Reset to factory settings

If the error persists after these checks, you can perform a complete reset of the robot to restore its original settings. This operation can correct certain software malfunctions.

5. Additional assistance

If none of these steps resolve the issue, it is recommended to contact customer service or a qualified professional for in-depth technical assistance.

Question 8

What is the default PIN code for the STERWINS 400M² 18V robotic mower and how do I reset it?

Accepted Answer

The STERWINS 400M² 18V robotic mower is equipped with a security PIN code to prevent unauthorized use.

Default PIN Code

The PIN code initially configured on this model is usually 0000. This code must be entered to unlock the mower and allow it to operate.

Changing and Resetting the PIN Code

If you have changed the PIN code and cannot remember it, you need to reset the robot to factory settings to regain access.
The reset procedure varies by model, but it often involves a reset button or a specific sequence to perform on the control panel.
After resetting, the PIN code returns to its default value of 0000.

Safety Tips

Change the default PIN code at the first use to secure your device.
Carefully note your new PIN code to avoid any lockout.

Question 9

What should I do if my STERWINS 400M² 18V robotic mower displays the message "no signal"?

Accepted Answer

The message "no signal" on your STERWINS 400M² 18V robotic mower indicates that the robot is not detecting the signal from the perimeter wire that defines the mowing area. Here are the main possible causes and solutions to check:

1. Check the perimeter wire

Make sure the wire is properly laid around the area to be mowed without cuts or displacement.
Check that the wire is not damaged or cut, which would prevent the signal from being transmitted.

2. Check the connections

Ensure that the ends of the wire are properly connected to the charging station.
Make sure the connections are clean, without corrosion or looseness.

3. Charging station and power supply

Confirm that the charging station is powered and functioning normally.
A power issue may prevent the signal from being transmitted through the perimeter wire.

4. Electrical interference

Keep the robot and the charging station away from electronic devices that may create interference (e.g., speakers, radios, other wireless equipment).

5. Test in another area

If possible, move the robot to another area where the perimeter wire is installed to check if it detects the signal.

By following these steps, you will be able to identify the cause of the "no signal" message and restore the normal operation of your robotic mower.

Question 10

What should I do if my STERWINS 400M² 18V robotic mower displays a battery error even though it is new?

Accepted Answer

If your STERWINS 400M² 18V robotic mower displays a battery error even though it is new, here are several steps to follow to try to resolve this issue:

1. Check the battery

Make sure the battery is properly installed in the designated compartment. Remove it and then reinsert it to ensure a good connection.
Visually inspect the battery for any damage, swelling, or apparent defects.

2. Fully charge the battery

Place the robot on its charging station and let it charge for several hours (usually 6 to 8 hours) before the first use.
Check that the charging station is powered and that the contacts are clean.

3. Restart the robot

Turn off the robot, wait a few minutes, then turn it back on to attempt a reset of the error.

4. Operating conditions

Ensure that the ambient temperature is within the recommended range (avoid extreme temperatures that can affect the battery).

If after these checks the error persists, it is possible that the battery is defective despite the newness of the device. In this case, contact STERWINS customer service or technical support for assistance or replacement.

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