Hello K828.
Thank you for sharing your feedback. We are sorry to hear the mower is not meeting your expectations in terms of runtime and performance at lower cutting heights.
When a mower “chokes” or struggles, especially at a low blade setting, it is often related to increased load on the motor. Cutting too close to the ground can force the blade to work harder, particularly in thicker or damp grass, which can reduce runtime and cause the motor protection system to temporarily reduce power. We recommend raising the cutting height one or two settings and making a slower, more gradual pass to reduce strain and improve consistency. It is also helpful to ensure the underside of the deck is clean and free of grass buildup, as debris can restrict airflow and cutting efficiency. Confirming the battery is fully charged and properly seated can also help maintain peak performance throughout the cut. This model is designed to perform best with a moderate cutting height and regular mowing intervals, which helps maximize both runtime and cutting efficiency. If you continue to experience issues, our support team can help review your setup and ensure everything is operating as intended. They can be reached either using the online chat function, on Greenworks Tools page, or by calling 1-888-909-6757.