The work area capacity is a figure that says 'if you have a lawn that is square, has absolutely no physical hinders and is available for mowing 24/7, then this machine will have battery capacity enough to handle it without forcing you to replace the battery/batteries prematurely.' The manual hints that even a lone tree in the middle of the lawn can cut capacity to 70%. Depending on if the tree is the end of the world to bypass or not, of course. My 220AC has a capacity of 1800m 2 (about 0,45 acres) and with some thinking on how to place the guide wires it handles a 1400m 2 garden (about 0,35 acres) with slopes, 10 apple trees, bushes and whatnot on 13 operational hours a day.
Once it gets going. I can tell that the initial startup in the spring is always pushing it to it's limits and then some, but it sorts it out. And to be honest, I replace the battery prematurely. Instead of every 4-5 years as intended, I replace it every second or third year.
This is a New Genuine OEM Husqvarna Automower Cleaning and Maintenance kit, Part number 590855101. The kit includes 2 strong brushes, a screwdriver, a bottle of cleaner and a cleaning rag. When Husqvarna says that a certain model has a 'working area capacity'. My 220AC has a capacity of 1800m2 (about 0,45 acres) and with some. To like traveling several hours just to upgrade the firmware via USB port.