30 Compartment Standard Rear Loading Guardian System Home Theater Accessories 4 Number of Batteries Included 4 Number of Batteries Included 2 Maximum Speed (RPM) 1600 RPM Color Family Red Voltage (v) 22v Product Weight (lb Compatible and versatile – works with all Bosch 18 V Li ion batteries to deliver power to any 5V USB or 12V DC device(s) Dual charging – charges two devices simultaneously Heated jacket compatible port – allows 12V use with Bosch heated jackets Metal belt clip – provides additional user convenience Sleep mode – prevents overcharging Power on button – activates charging session The 30 door standard rear loading Guardian system is a secure 30 doors each measuring 3 5 8 in