The battery-powered 20" walk-behind scrubber drier is a perfect fit for contract cleaners, retail, school and healthcare cleaning needs. The easy to operate auto-scrubber provides practical cleaning performance of 13,200 ft2/hour. The BD 50/50 C Classic features (2) 12V, 100 Ah AGM batteries with shelf charger, 20" pad driver, curved squeegee, Home Base rail system and battery level and hour display. 3 modes of cleaning: Normal mode - Scrubbing and vacuuming. Intense mode - Scrubbing only. Vacuum mode - Vacuum only. Home Base rail allows user to attach manual cleaning tools for quick touch ups and less visits to the supply closet. Productive. Efficient and simple to operate.