The HART 20V 4 Gallon Chemical Sprayer is the perfect tool to tackle your medium-heavy duty spraying needs around the yard! The HART 20V 4 Gallon Chemical Sprayer provides maximum runtime with up to 45 gallons of spray per charge. The HART 20V 4 Gallon Chemical sprayer’s padded shoulder straps provide enhanced user comfort during extended periods of use. The HART 40V 4 Gallon Chemical Sprayer’s quick access PSI control dial allows you to adjust to your desired pressure quickly and conveniently. The HART 20V 4 Gallon Chemical Sprayer is ideal for use with insecticides . herbicides . and fungicides. The HART 20V 4 Gallon Chemical Sprayer and HART 20V Battery are covered by 3-year limited warranties.