Equipped with our new NX300 36V Battery Technology and 350W digital brushless motor, the RSB150 is engineered to deliver our most powerful cordless cleaning yet. Delivering up to 80 minutes of cordless freedom, a 40% increase in airflow and suction, and maximum user comfort, the RSB150 provides optimum cleaning productivity with powerful and professional cleaning results. Leading Performance. Long Runtime - 80 Minutes of battery power. Fast Charge - Recharge to 80% in 1 hour