Husqvarna Automower® Solar Charger allow install for robotic mowers off-grid, with no need of hardline power. The Solar Charger’s large commercial-duty, 320-watt solar panel stores energy in a 100Ah Lithium-iron batteries for consecutive days of extended runtime. Features a corrosion-resistant aluminum frame for extended outdoor durability. Designed to be an all-in-one solution for fast and easy installation on any property. Packaged with one 100Ah Lithium-iron battery. Additional battery available as accessory.