The STIHL AR 3000 L backpack battery is a high-capacity backpack battery from the AP System, designed for professional users who require long run times for their battery-powered tools. It provides exceptional power and can be used with a wide range of STIHL AP System tools. The AR 3000 L features a comfortable and ergonomic harness system for extended use, and it has a USB port for charging mobile devices. It is a durable and weather-resistant battery that is ideal for all-day use in professional applications.