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4-Gallon 40-volt Battery Operated Plastic Backpack Sprayer with Adjustable Spray Pattern

Ratings & Reviews for Kobalt 4-Gallon 40-volt Battery Operated Plastic Backpack Sprayer with Adjustable Spray Pattern

2.9
138
Review
 2.9 out of 5
139 Reviews


42% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The product has received mixed reviews, with some users finding it powerful and well-designed, while the majority report significant quality and reliability issues. Key concerns include poorly designed and unreliable straps, frequent mechanical failures like leaks and pump problems, and difficulty fully draining the tank. While some appreciated the high-pressure output and battery life, the overall consensus is that the product is not reliable or durable enough for regular or heavy-duty use, with many customers needing to return it multiple times due to defects. The product appears to be a disappointment for most customers, with quality control and design flaws undermining its functionality and value.

Customer review summary generated by AI, including incentivized reviews.
139 Customer Reviews

Because of the weight not great for hill work.

Would Recommend

It did the job quit well but was heavy. 2 gallons was sufficient for working on a hill.

May 13, 2026
Verified Purchaser
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Sprayer

Would Recommend

Easy to handle and opearate!

May 13, 2026
Verified Purchaser
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Single use product

Would Not Recommend

Used once last spring for weed control, drained and stored in a warm garage. Battery kept plugged in. Took it out this year to find out that despite the battery being fully charged, it no longer turns on. I see now that Lowe’s has dropped this product. I’m hoping that customer service will at least replace it with a lsimilar one as it was a very expensive single use last year.

May 10, 2026
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Response from Kobalt Team

Hi there, Nick! Thank you for your review. Batteries should be removed from the tool when not in use. This is to ensure the battery stays charged and...

Kobalt TeamMay 12, 2026

Chervon-Kobalt

It leaks

Would Recommend

The wand has a leak and have to take back

May 9, 2026
Verified Purchaser
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Response from Kobalt Team

Hi there! Thank you for reviewing your Kobalt KBSP 1040A-03 backpack sprayer. We're sorry to hear that it had a leak and you are planning to retu...

Kobalt TeamMay 11, 2026

Chervon-Kobalt

Leaks!!!

Would Not Recommend

Leaks right after I was given this sprayer last year due to design of the tank and how its held onto the metal frame with crews that interject into the tank itself. LEAKS!!!! Unable to return with out a receipt (gift) so this warranty is useless.

April 25, 2026
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Response from Kobalt Team

Hi there! Thank you for sharing your experience with the Kobalt 4‑Gallon 40‑Volt Backpack Sprayer. We’re sorry to hear about the leaking issue you en...

Kobalt TeamApril 27, 2026

Chervon-Kobalt

Look for items on sale

Would Recommend

The value and price

April 24, 2026
Verified Purchaser
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Excellent Backpack Sprayer

Would Recommend

Excellent backpack sprayer. Well worth the money over the manual pumping style.

April 16, 2026
Verified Purchaser
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Battery last for numerous uses

Would Recommend

Easy to use

April 16, 2026
Verified Purchaser
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Replacement parts non existing

Would Not Recommend

Unit was used twice. When attempting to use a third time, the nozzle failed. There is a split down the side. Evidently it's a common problem as the replacement part is out of stock. When checking places to buy it I came across several reviews. The split happens in the same area so this is an indication of manufacturing quality issues. There's no time frame when or IF this part will become available.

April 6, 2026
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Response from Kobalt Team

Hi there! Thank you for your review of our Backpack Sprayer. We are very sorry to hear that you have had a difficult experience locating replacement ...

Kobalt TeamApril 8, 2026

Chervon-Kobalt

4-Gallon Sprayer

Would Recommend

Have yet to use this for trees a budding at moment, but we have heard good things.

March 31, 2026
Verified Purchaser
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Response from Kobalt Team

Hi GardenGuru! Thank you for reviewing your Kobalt 4-gallon sprayer. We hope you will love it once you get a chance to use it. We appreciate your rev...

Kobalt TeamMarch 31, 2026

Chervon-Kobalt

No replacement parts

Would Not Recommend

No wand replacement available for over a year part failed in six months call customer service today no help asked to talk to supervisor they were in meetings. Will never shop in lowes again

March 27, 2026
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Response from Kobalt Team

Hi there, Rich! We are sorry to hear that you are having a difficult time locating replacement parts for your Backpack Sprayer. We would be happy to ...

Kobalt TeamMarch 30, 2026

Chervon-Kobalt

Lowes made it right, spayer has been finicky.

Would Not Recommend

I liked the product, but it took me 3x of taking it back to get one that worked right.

August 29, 2025
Verified Purchaser
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DON"T BUY KOBALT Products

Would Not Recommend

A wise person once told me many years ago, that all companies have problems, but what separates the good from the not so good companies is how they fix their problems. Lowes has TERRIBLE at customer service. I have one of their backpack sprayers, and they won't honor the 5 year warranty because I can't produce the receipt. I have experienced this before with another Kobalt product (a cordless lawn mower) that died two weeks after the warranty expired and Kobalt customer service was NO HELP. ...

August 15, 2025
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Response from Kobalt Team

Hello Keith! We appreciate you reviewing the Kobalt Backpack Sprayer. We thank you for sharing your feedback regarding the warranty policy and will p...

Kobalt TeamAugust 15, 2025

Chervon-Kobalt

Would Not Recommend

Two years after I purchased this sprayer, the wand handle sprung a pin hole leak, and there is no replacement part available from Lowes. This is my 2nd time I have had a similar problem with a Kobalt piece of equipment. Works good for a short period of time, and then something simple fails to make it unusable. I won't be buying any more Kobalt equipment.

August 13, 2025
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Response from Kobalt Team

Hello Keith! Thank you for reviewing the Kobalt Sprayer. We would be happy to take a closer look into your experience with the sprayer leak to see ho...

Kobalt TeamAugust 14, 2025

Chervon-Kobalt

Great Sprayer

Would Recommend

Works great, great quality product, used it about 20-times so far and works as advertised, no problems or issues like some of the other reviewers have reported.

July 28, 2025
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Kobalt 40V Backpack Sprayer

Would Recommend

I have had my sprayer for about 3 years. This was the first Kobalt 40v tool I purchased. I have bought several since. This sprayer has served me well. It has worked since day 1 and has never let me down. It has a great spray range. I have used it for insecticides, herbicides, and also with chlorine for pressure washing. I almost always clean the machine after use to keep chemicals from messing up the tubes, etc... After cleaning the tank I run fresh water through it. My only complaint with the u...

July 18, 2025
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Would Not Recommend

Trash, which there was a No Star option for review. Had to get it replaced twice for the battery, and once for the motor not working. ALL IN THE SAME YEAR. Do not buy.

July 18, 2025
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Response from Kobalt Team

Hi there, Jack! Thank you for sharing your experience with our Backpack Sprayer. We are very sorry to hear that you have had a difficult experience. ...

Kobalt TeamJuly 19, 2025

Chervon-Kobalt