Hart 20-Volt 4 Gallon Chemical Sprayer (1) 20-Volt 2Ah Lithium-Ion Battery

This is the first battery operated sprayer I have owned, but with 5 acres of land and a gypsy moth infestation it was time to switch from the hand pump. Right out of the box instructions were easy to follow, assembly was straight forward and battery charged quickly.  Unlike the Hart 2 Gallon Backpack Sprayer, the harness is attached to this unit. Tank has a large opening with a removable strainer to  keep debris out. Hose and spray wand are located on the right side of the unit, which is perfect for the right handed individual like myself. Completely full with 4 gallons of liquid it was difficult to put on.  With trial and error I have learned to adjust straps to fit comfortably while the sprayer is empty, fill the tank, then place the tank on a raised surface and just back up to it to slip the straps over my shoulders. With padded shoulder straps and a center front strap, the fit was secure and comfortable.  The unit comes with an adjustable cone nozzle and fan nozzle.  Control knob, with infinite settings between minimum and maximum, was  easy to reach on the left side of the unit.  I can't comment on the psi (pounds per square inch) for this unit, however the pressure was sufficient to reach trees 15 feet into the air. The tank pressurized very quickly and the noise level was low.  Translucent tank is marked with measurements in litres and gallons  for accuracy when filling.  Trigger lock is a nice feature for continuous spray.   When not in use, the battery and charger can be stored in a hinged compartment on the back of the unit. This  is a great sprayer and the battery is interchangeable with other Hart tools.  If you are looking for a self-powered battery operated garden sprayer, check this one out

I was looking for an improvement to the current 2 gallon hand pumped sprayer that I currently had. I was getting tired of having to mix chemical twice and then hand pump for the pressure. The Hart 4 gallon chemical sprayer hit the spot for having the capacity and being a battery operated sprayer. The harness is similar to a nice hiking backpack as it has the front strap. The shoulder straps are properly padded to provide comfort for the bigger capacity that this unit provides. It can be a heavier unit for a smaller person, but the proper support is there for it. You can see in the picture on the left side of the unit is a blue turn knob. That controls the pressure of the sprayer and is very easy to utilize while the unit is on your back. On the lower back of the unit is the flip door for where the 20 volt battery goes into. I especially like this as it provides protection to the battery from any of the outside elements you may encounter. The container also has the markings for each gallon, so you are able to use less than 4 gallons and accurately do mixtures. Overall, I'm very satisfied with the Hart 20-Volt 4 Gallon Chemical Sprayer.