1.Charge once can use it over 10 hours continiously 2.Light weight, you can control it easily 3.16L/18L/20L chemical tank Model: 3WBD-16LChemical Tank Capacity: 16LMating Bettery: 12v/AhWorking Pressure: 0.15-0.4 MPaRated Flow: 1.2-2.5L/minLift: 40-60mPower: 20wNet Weight: about 6kgRechargable battery, once charged can last 12 hours.Chemical spraying in garden and agriculture.16L, 18L, 20L , ...