Hello Ayat.
We are sorry to hear the running time has not met your expectations, that can be frustrating, especially with a combo kit. With the 48V (2x24V) system, performance is closely tied to setup and operating conditions, so a few checks may help improve battery life. First, make sure both batteries are fully charged and installed together, as the mower requires both to operate at full power. Grass conditions also play a big role, cutting very thick, wet, or overgrown grass, or mowing on a lower deck height, will increase load and drain the batteries faster, so raising the deck height and mowing in drier conditions can help extend runtime. It is also a good idea to keep the blade sharp and the underside of the deck clean, as buildup can create extra resistance. For the trimmer and blower, using lower speed settings when possible can significantly improve battery efficiency. Additionally, allow batteries to cool before recharging and avoid storing them fully depleted, as that can impact long-term performance. If the running time still seems unusually short after these checks, it may be worth testing each battery individually (if applicable) or reaching out to support to ensure everything is functioning as expected. They can be reached either using the online chat function, on Greenworks Tools page, or by calling 1-888-909-6757.