Allied Optivac G180 Portable Suction Unit Proceesing Time 2-4 Weeks Run time operation on fully-charged battery for approximately 3 hours at maximum vacuum. 25-550mm Hg vacuum range, coupled with greater than 30lpm flow, provides powerful suction for faster aspiration. Fully chargeable in 8 hours. Will run on AC power even with a low battery. Long-life rechargeable battery eliminates the need for frequent replacement. Sealed water-resistant unit is easy to clean, and minimizes potential contamination or damage to the compressor and battery. Control panel at an angle for easy viewing. Quality-engineered thermoplastic provides impact resistance and durability. 3-year warranty on the unit and 1 year on the battery.