Quick Answer
The 108V cordless lawnmower features an intelligent automatic variable speed system that adjusts the motor speed to match the cutting conditions. The motor will increase speed in thicker grass to provide more cutting power and reduce speed in lighter grass to help maximise battery runtime.
Tip: Changing motor speed during use is normal and does not indicate a fault.
How the Automatic Variable Speed System Works
Your 108V cordless lawnmower is designed to automatically adjust its motor speed based on the resistance it encounters while mowing.
This intelligent system helps to:
- Provide extra power when cutting long or dense grass
- Reduce energy consumption in lighter cutting conditions
- Maximise battery runtime
- Deliver consistent cutting performance
No manual adjustment is required.
Normal Motor Speed Behaviour
During operation, you may notice that:
- The motor speeds up when cutting thick, long or wet grass
- The motor slows down when cutting shorter or less dense grass
- The motor speed changes automatically as you move across your lawn
- The changes happen without any user input
This is normal operation and is part of the mower's intelligent power management system.
Why Does the Motor Speed Change?
The automatic speed control continuously monitors the workload placed on the motor.
When more cutting power is needed, the mower automatically increases motor speed.
When less power is required, it reduces motor speed to:
- Improve battery efficiency
- Extend operating time
- Reduce unnecessary power consumption
This allows the mower to deliver the right amount of power exactly when it is needed.
When Should I Be Concerned?
Motor speed changes are expected during normal use.
However, if you notice any of the following, further investigation may be required:
- The motor repeatedly stops while cutting normal grass
- The mower loses power completely
- The motor speed fluctuates excessively without cutting grass
- Warning lights or battery fault indicators are displayed
If any of these symptoms occur, please contact our customer service team via Live Chat or submit a support ticket.
Important Information
- Automatic variable motor speed is a standard feature of the 108V cordless lawnmower.
- No manual speed control is required.
- The system is designed to optimise both cutting performance and battery life.
- Motor speed will vary depending on grass length, density and cutting conditions.
Frequently Asked Questions
Why does my lawnmower speed up and slow down?
This is normal. The automatic variable speed system adjusts the motor speed according to the amount of power needed to cut the grass.
Is there something wrong with my mower if the motor speed changes?
No. Variable motor speed is a normal operating feature designed to improve performance and extend battery runtime.
Can I manually control the motor speed?
No. The motor speed is automatically controlled by the mower's intelligent power management system.
Does changing motor speed save battery life?
Yes. Reducing the motor speed when less power is needed helps maximise battery runtime without compromising cutting performance.
Why does the mower run faster in long grass?
Longer or denser grass creates more resistance, so the mower automatically increases motor speed to provide additional cutting power.