https://www.husqvarna.com/za/learn-and-discover/how-to-use-save-mode-on-your-battery-trimmer/
How to use savE mode on your battery grass trimmer | Husqvarna ZA
savE mode on our battery grass trimmers lowers the trimmer head RPM at full throttle, while retaining torque to enable the user to preserve battery life.
how to usebattery grass trimmermode on