Hello Jim Ra.
We appreciate you taking the time to share your experience. It is great to hear the saw delivered strong cutting performance initially, though we understand the frustration with both setup clarity and runtime. For assembly, your feedback on the instructions is valuable, many customers do find visual guidance helpful, to further support our customers, Greenworks Tools offers a YouTube channel featuring videos on a variety of topics, including battery-powered tools, lawn care, gardening, DIY projects, and assembly guides for most of our machines.
Regarding the battery performance, runtime on an 80V 4.0Ah pack can vary significantly based on wood diameter, density (hardwood vs. softwood), and cutting technique. Larger limbs, especially hardwood or partially seasoned wood, can draw substantially more power and reduce runtime compared to lighter trimming. To help maximize runtime, ensure the chain is properly tensioned and sharpened, the bar and chain are adequately lubricated, and avoid excessive pressure during cuts (letting the saw do the work improves efficiency). For heavier cutting sessions like processing firewood, having a second battery on hand is often recommended to maintain continuous operation. If the battery depleted unusually fast or is not holding a charge, we suggest reaching out to Greenworks success so they can evaluate the battery and confirm it is performing within specifications. They can be reached either using the online chat function, on Greenworks Tools page, or by calling 1-888-909-6757.