

Hart 20-Volt 4 Gallon Chemical Sprayer (1) 20-Volt 2Ah Lithium-Ion Battery
Key item features
- Ideal Usage: Perfect chemical sprayer for medium-heavy duty spraying needs around the yard
- Extended Runtime: Provides maximum runtime with up to 45 gallons of spray per charge
- Adjustable Pressure: Quick access PSI control dial allows for convenient pressure adjustments
- User Comfort: Padded shoulder straps enhance comfort during extended use
- Versatile Application: Ideal for use with insecticides, herbicides, and fungicides
- Battery Included: Comes with a 20-Volt 2Ah Lithium-Ion battery
Specs
- Volume capacity4 gal
- Operating typeBackpack
- Power typeBattery
- BrandHART
- Rec. useResidential
- Weight8.39 lb
Reviews summary
- : Made with high-quality materials.
- : Provides consistent pressure for spraying tasks.
- : Offers high quality at a lower cost.
- : Provides even, pressure-settable spray pattern.
- : Offers adjustable pressure, but lacks clear rate indicators.
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About this item
Product details
- Perfect chemical sprayer for 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
- Quick access PSI control dial allows you to adjust to your desired pressure quickly and conveniently
Specifications
Volume capacity
Operating type
Power type
Brand
Warranty
Warranty information
Warnings
Ingestion Hazard
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Customer ratings & reviews
Reviews summary
- : Made with high-quality materials.
- : Provides consistent pressure for spraying tasks.
- : Offers high quality at a lower cost.
- : Provides even, pressure-settable spray pattern.
- : Offers adjustable pressure, but lacks clear rate indicators.
Customer images






+20 images
Showing 1-3 of 261 reviews
Great Multipurpose Sprayer
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
Brilliant Engineering! Saves me time and sweat.
The Hart 20V weed sprayer is an act of engineering brilliance! I always disliked lugging around a 2 gallon hand pump sprayer. It took a lot of pumping to keep the pressure up and two gallons ran out so quickly. The Hart 20 volt, four gallon sprayer has a built in pump that is powered by a rechargeable Lithium battery that lasts me all day. Now I can spray for 8 hours and barely work up a sweat. The sprayer comes with backpack style padded shoulder straps. At 65 years old I find it a bit heavy when full. So I shock corded it to a hand truck with oversized wheels. Now I can easily cart it almost anywhere. If I need to go deep into the underbrush I only fill the tank half full and wear it on my back. I own several Hart 20 volt power tools and they have always served me well. This unit uses the same battery and charger which is included. It is wonderful to have extra batteries around. This unit is only used for spraying weeds. My next Hart 20 Volt 4 gallon sprayer I plan on using for a camp shower. All I need to do is remove the spray wand, thread a shower head on and fill the tank with warm water. The adjustable pressure knob delivers up to 90 psi; more than most home water systems. When I get a second unit and complete the conversion I will leave a 'how to' review.
Battery power to the rescue!
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.
