Chapin 63985 4-Gallon 20v Battery Backpack Sprayer
The Black & Decker 20-volt Lithium ion Battery is good for up to just shy of 2 hours of continuous spraying – so with sporadic spraying, that could last the whole day. It’s got a 4-gallon tank and reaches 35-40 psi with a 20-foot maximum horizontal spray stream. Check it out, right here.