Model: #P2860

4.7 | 191 Reviews
  • 11 Tanks per Charge
  • Features a Variable Pressure Dial
  • Includes Adjustable Nozzle and Flat Fan Nozzle

4 Gallon Tank with 11 Tanks per Charge


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This product is covered by a 3-year limited warranty.

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18V ONE+™ 2.0 Ah Battery
Compatible Chemicals
Fungicide, Grass Killer, Pesticide, Weed Killer, and other Chemicals
Hose Length
Nozzle Type
Adjustable or Flat Fan
Tank Capacity
4 Gallons
3 year limited warranty
Weight (Empty)
15.2 lbs.
Weight (Full)
33.32 lbs.



18V ONE+ 4 GALLON BACKPACK CHEMICAL SPRAYER Kit is rated 4.7 out of 5 by 190.
Rated 5 out of 5 by from Easy to use This works really good. It uses the entire mixture, without wasting the last gallon. I have been able to spot treat my entire yard in less than 1/4 the time. It is heavy, so I put it in a cart to save my back, but I knew that totally full, it would be heavy, but that’s to be expected with the 4-gallon capacity. Overall, I’m happy with my purchase.
Date published: 2022-09-25
Rated 5 out of 5 by from Unbelievably Reliable - Superb performance Purchased in Spring of 2020 with 2 additional batteries - use regularly and all are still holding up remarkably. Husband says this ones the BEST cordless power tool he's ever come across.
Date published: 2022-09-18
Rated 3 out of 5 by from Works great as a Sprayer, but ... I picked one of these up at Home Depot last year as a replacement for a tow behind sprayer with wand and 2 gallon pump sprayer. I have a bunch of Ryobi 18V ONE+ power tools and this seemed like a good option. As a sprayer, it works well. However, there are a few issues. Probably the worst is the shoulder straps that have padding, but not over the shoulders. I cut the skin on my shoulders when I did a full 4 gallon load. I ended up rolling some hand towels around the straps above the pads with duct tape so that they protected my shoulders. I now stick to 2 gallons at a time. The lid is a pain to screw on. The threads are hard to get started, Finally, the wand leaks a little bit at the trigger so that your hand will get wet with chemicals. I recommend wearing some protective nitrile or latex gloves when using. I have used this dozens of times to spray weed/grass killer around my house, barn, etc. with great results.
Date published: 2022-09-03
Rated 4 out of 5 by from Easy to use It makes spraying large areas much easier. I wish there was some padding on the backpack.
Date published: 2022-09-02
Rated 1 out of 5 by from Ryobi 4 gallon backpack sprayer knob not working My backpack sprayer knob stopped working today. Used it twice now and had for 2 months. Full tank in the middle of treating and knob won’t turn on.
Date published: 2022-08-28
Rated 5 out of 5 by from Works as stated The only complaint is - the threads of the lid are out of alignment. With patience, and caoting with ptroleum jelly around the lid inside works.
Date published: 2022-08-25
Rated 5 out of 5 by from I use this sprayer for weed control I've used it now about six times I live on a large acre lot I put in the large for amp hour battery and I can do the whole two acres on One battery it's amazing before I used to have to pump spray and it was inaccurate now I turn the knob set it to where I want and just walk I can knock things out in half the time
Date published: 2022-08-24
Rated 5 out of 5 by from Perfect Perfect unit for my purposes pressure is adequate for delicate surfaces
Date published: 2022-08-24
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