The Gomco OptiVac G180 Suction Machine is a portable, sealed, water-resistant unit that is easy to clean and minimizes potential contamination or damage to the pump and battery. It features a 1,500 milliliter, disposable canister; -25 to -550 mm Hg vacuum range; 110-230V/50-60 Hz Motor Horsepower (with a less than 60 decibel level); > 30 liters per minute Flow Rate; and a sealed, 12 volt lead acid DC battery. This unique machine also has a battery maintenance system that keeps the battery fully charged but not over-charged, and it will run at full performance on AC power even with a depleted battery; plus, its battery life at maximum vacuum is 3 hours (at 550 mm Hg) on a fully-charged battery (1-hour run time after just 2 hours of charging; fully charged in 8 hours).