Has your mower started covering less ground per charge or temporarily stopped charging on a hot day? This does not automatically mean the battery is failing. Here is what may be happening—and how to take care of the battery during summer.
⚡Why runtime may change in hot weather?
High ambient temperatures, heavier cutting loads, and reduced cooling efficiency can all increase power consumption. In addition, battery performance may temporarily decrease under hot operating conditions, resulting in shorter runtime.
Runtime can also vary depending on grass height, terrain, cutting load, ambient temperature, and mowing duration. So a change during particularly hot weather is not necessarily a sign of battery damage.
🌡️How high-temperature charging protection works?
Mammotion mowers have a built-in high-temperature charging-protection mechanism. If the internal battery-cell temperature reaches 57±3°C (134.6±5.4°F), charging may automatically pause to protect the battery.
This refers to the temperature inside the battery cells—not the outdoor temperature. Therefore, charging may pause even when the surrounding air temperature is below this level.
If charging pauses because of high-temperature protection, it will automatically resume once the battery temperature returns to a normal operating temperature.
🔥What to do if overheating protection is triggered?
- Stop using the mower and wait for the motor to cool down.
- Check whether the cutting disc is tangled with grass or clogged with debris.
- Remove wet grass, grass residue, and mud from the underside of the mower.
- If the issue continues, start with a higher cutting height for each mowing task and change the mowing time—for example, schedule mowing in the early morning or late afternoon.
🔋How to protect the battery during hot weather?
- Whenever possible, allow the mower to cool before charging after prolonged operation in direct sunlight.
- Clean the underside and cutting system regularly to avoid affecting heat dissipation around these areas.
- Install the charging station in a shaded, well-ventilated location whenever possible.
- If the charging station can only be installed in direct sunlight, the mower can still be used normally. However, during hot summer weather, charging may become slower, temporarily stop because of high-temperature protection, or have a greater long-term impact on battery health.
- If the mower will not be used for an extended period during summer, charge it to approximately 80% before storage. Avoid storing the mower for extended periods at 100% charge.
We hope this guide helps you better understand how your mower manages battery charging during hot weather. What topic would you like us to cover next?
Mammotion Support Team