Master Mfg Revolt Lithium-Ion Series 9 Gallon Pull & Tow Sprayer-1.0GPM, 50" Swath

Executive Summary: Buy this sprayer. It's superb. Verbose version, for the reader at leisure: I purchased this sprayer +3 years ago. Today I used it to spot spray 34 gallons of Weed-B-Gon (also Amazon purchased, in a gallon jug not available at local home improvement stores). I finished spraying our very weedy one acre lawn. I didn't finish the (three year old!) battery; the pump still was going strong. Excellent! The sprayer usually is used three times annually, for applying weed killer. It's always worked well and never failed. But I didn't purchase this sprayer without prior frustration in finding an acceptable solution. The first attempt was a hand pumped two gallon sprayer from a local hardware store. It's good enough, and I still use it for limited Roundup application. But the small tank means the sprayer needs to be refilled repeatedly to cover a large area, and the many refills are excessively time consuming. So I purchased a hand pumped four gallon backpack sprayer from H-F. It was a disaster. I hated this sprayer! Carrying +30 lbs on my back, poorly supported by thin, insufficiently padded straps was true torture. I couldn't use it. The third attempt was a battery powered unit from Tractor Supply (RC-8G-SS-TSC). Although a wheeled sprayer, this too was immensely unsatisfactory. Underpowered and with limited battery life, it started falling apart upon first use. Soon after, when the handle broke, I returned all the pieces to TSC (for full refund). But the fourth sprayer--the Master Gardener Rechargeable Cart Sprayer - 12 Volt, 9-Gallon--reviewed here has been an excellent purchase. I pull it by hand and even filled with 65 lbs of weed killer, it rolls easily enough. The pump is sufficiently powerful for spraying a decent distance (which I've not measured) and as indicated above, battery life, both per charge and in total, has been superb. Regarding complaints raised by other reviewers: tank capacity markings are difficult to see--yes; my solution was to highlight the raised indicators with a black permanent marker hose too stiff--the hose, at least on my unit, is tightly coiled and resists uncoiling, but for me it's not been a problem, and were it, as others have indicated, the hose can be replaced easily. (Also, from other reviews, it seems the sprayer may now come with a less stiff hose.) pump does not fully empty tank--yes, there will be some liquid remaining in the tank that the pump can't extract, but it's far short of the one gallon claimed in some reviews. When pulling the sprayer by hand, I finish the last of each tank by tilting the unit one way or another. What remains unpumpable is at most a few ounces. Readers might be curious why, more than three years after purchasing this sprayer, I decided to write a review. The answer: earlier this week I wanted to apply an end-of-summer dose of weed killer. But when I retrieved the sprayer from storage--the battery charger was missing!! In my version of homeowner chaos, there are a couple locations where the charger "should" be. I searched them multiple times, doing some reorganization in the process, but didn't find the charger. Then there a couple places where the charger "might" be. Those too were searched repeatedly, without success. At that point I decided the search was too time-wasting, if not futile (i.e., it had to be someplace in this dang house), and that I just should buy a new charger. So, I checked the owners' manual--but it has no information on ordering a new charger. Then I searched Amazon, including reviews for the sprayer. But other than a "call the manufacturer" suggestion, this too was unsuccessful. After concluding that a replacement charger wasn't to be easily obtained, I reactivated the in-home search for the old charger, now focusing on the many places where it "shouldn't" be. And finally, success!! (Behind a commemorative plate on the living room wet bar...). So, in thanks and celebration I decided to write this review. My final advice--(i) buy this sprayer and (ii) be certain ALWAYS to store the charger with the sprayer. Regards, BS ---------- An update, 11 May 25 Eleven years after purchase, the sprayer still works fine--and I'm still immensely happy with it. But this year, in its first use while putting down 40 gal of weedkiller, the pump was noticeably weaker at end than when I started. I thought "The pump must be failing" and after research, bought a new one for $27. But sometime that night woke up thinking "Why would it be the pump and not the battery?!?" Sure enough, the next day after recharging the battery, the pump worked fine. Of course, after 11 years of service the battery had failed. I bought a Ritar RT1245H, 12V 5Ah F1 SLA AGM Rechargeable SigmasTek replacement battery ($18). Although the new battery's dimensions were identical to the old, battery replacement proved surprisingly challenging. Three screws secure the back cover of the sprayer and the cover is easily removed. The battery is mounted to the inside of the cover and retained there by a "cage" consisting of two metal straps that go around the battery and screw into the cover. When removing the battery, pay more attention than I did to how the cage fits to the cover and how the battery fits in the cage. Because for me, the cage straps seemed too short. Two of three strap ends could be screwed to the cover, but the third proved impossible. The gap between the last strap end and the cover was roughly 1/2" and the screw wasn't long enough to bridge the gap. Ultimately, a longer machine screw was used, threading it through the cover and securing it with washer and nut. Inelegant, but serviceable. (The fourth strap end is not intended to fasten to the cover.) Again, pay more attention in disassembly and you might have an easier time putting it back together. But once back together with new battery, the sprayer again is working fine. And I've a replacement pump on hand when needed...

I love this sprayer! I've always used smaller handheld sprayers and never knew how much easier my life could be with something like this. We live on fifteen acres, and I mostly purchased this for use on an acre in front of our house, but I look forward to trying it out towed behind our mower for a larger area back by our pond. Both the spot sprayer and the broadcast sprayer work well, although so far I've opted for the spot sprayer (we're trying to eradicate star thistle). This sprayer is easy to assemble, fill, use and clean. It feels very heavy duty but the weight is definitely manageable. It's pretty quiet up until it starts to run out of liquid. For the price, it's definitely worth it versus cheaper hand held sprayers and for those of us who don't want to fork out over $500 for a larger sprayer. If you're looking for something in between, this sprayer is for you.

I like this, used the unit for last fall, stored inside for the winter as you can't really get all the water out of the pump to protect from damage due to freezing. This spring it has been running like a champ. We use this for watering via its hose and sprayer, no chemicals. I can empty the tank 2.5 times and still have plenty of battery left- never have run the battery down. I have reservations about using this for liquid fertilizer and such as the liquid runs through the pump itself, over time fertilizers and such could cause pump damage. If I were to use this with the attached sprayer nozzle behind a lawn tractor or ATV, I would expect problems with the horizontal spray nozzle. As another reviewer noted "The front bracket for the ground spray nozzle screws into plastic but did not hold after the first use. There should be metal fittings in the plastic..". My ground spray nozzle broke loose from the tank the first time I bumped the sprayer when moving the unit- the screws just bed into brittle plastic. It takes almost nothing for them to pop out and rip their threads. I have the ground spray nozzle attached with cord now but it is much less than an ideal attachment-- even though I don't use it. Edit: 2 years know of use, this summer was very dry in my area, I was using this for 30 gallons a day, 3 days a week, for almost 3 months. Battery/ pump/ sprayer held up perfectly well.

This cart sprayer has been used for only 2 summers by my wife who is 65 - she does not abuse things. It has not been in the hands of careless youths or dragged up steps and over curbs. The price of this thing far exceeds reasonable profit and cost of materials - so it ought to be built to last. It is a good concept and fits our needs exactly (watering a small garden away from water and power in the middle of a traffic circle). However, the design engineering was either done by a fool or it was executed cynically with minimum cost of construction rather than durability in mind. On the back side of the unit is a black cover / casing behind which are the pump and the rechargeable lead acid battery. The pump motor is screwed directly into the back of the white plastic water tank. The battery (which, though small, is relatively heavy) is mounted to the black plastic cover. The black plastic cover is then attached with three small screws to the white plastic water tank. Normal use over anything but smooth pavement means the cart will get some bumping as it rolls along - and you can probably see where this is going - the three screws holding the black cover and the heavy battery strip out of the white plastic and the whole thing falls off the back of the cart - only held back from falling completely onto the ground by the electrical wires and hoses inside. The sprayer on the front of the cart (also directly screwed into the plastic tank) fell off last year. Aside from being challenged by the plastic mounting threads, the sprayer mount was under stress from the hose being cut too long by the person assembling it - over time the hose won out and pushed the sprayer mount off, stripping out the plastic threads. I trimmed the sprayer hose to a length where it does not stress the mount, and installed slightly larger (wider) machine screws in the sprayer mount and with the help of some blue Loctite, I hope they stay there for a while. It would have been better if the factory installed threaded metal inserts into the body of the tank - then this would not be an issue. The black plastic cover supporting the weight of the lead acid battery is an absurdity. It's bound to fail over a short time, probably consigning most of these units to the dump way before the materials useful life is over. Given the weight of the battery and its inevitable effect on the mountings as the cart goes over uneven ground, an intelligent person looking at this would say "why mount it using a plastic threaded hole?" Why not design the back cover so that it is mounted to the upright metal handle frame either side? Then it would support the weight adequately and not move at all. Another way to solve this would be to use a modern, and much lighter Lithium-ion battery. But there is that cost vs profits thing again. This cart as it stands is engineered to get money out of your wallet and be consigned to the dump not long after - the cart is a good idea but not a good use of your money or the materials it is made of. (I won't rant on about the environment here - but it really is upsetting how much of this kind of thing goes to the dump after two or three years). Now I have to go back to installing some metal strapping on ours to stop it from falling apart. A side note - our battery failed after two summers and I just replaced with another lead acid battery. Perhaps I should have bought a lithium ion replacement.... If I knew how poorly this cart was going to hold up a couple of years ago, I would never have bought it. I could make something more durable with a pump and a battery myself. In the attached photo - you can see the battery on the black cover, the pump mounted to the tank and a couple of the cover mounting screws on the ground which go directly into the white plastic. (I put blue Loctite in the screw holes but, no good - it needs wider screws and some other support, metal bracing or similar to the handle frame, to stop the cycle repeating). EDIT - here's a simple fix for anyone else with the same experience (or wants to prevent this happening to their cart). Buy two black EPDM rubber 36" x 3/4' stretchy straps from Home Depot (or Amazon) for under $3 each. There are two support rails under the cart water tank - hook one end of each strap on the front rail and the other end on the back rail so it goes around the tank and holds the back cover in place. The black rubber straps look like they came with the cart which is why I chose them - but you could use any colored bungee cords. (See added pics)

This is definitely a 5-star! Assembly was easy and operates as it should. Portability and weight are excellent.

This is just what I needed. At 82 years old my backpack sprayer was (literally) a pain. With its large wheels and 9-gallon capacity it is perfect for applying Roundup to my large, gravel-covered yard. Warning: The first unit I received had the batteries and other parts missing. I returned it. The replacement had the parts, but the battery dock was not attached -- just hanging. I mounted it myself and all was well The parts and instructions were inside the tank, which had water in it from factory testing; They had to be carefully separated and dried. While the unit is well thought-out and works superbly, the supplier needs to work with those who pack and ship it.

I’ve gone through more cheap sprayers than I care to admit — the kind where your hand cramps up after 10 minutes of pumping, the tank runs dry after one pass, and you’re trudging back to the garage twice before you’ve even finished the front yard. This electric 9-gallon sprayer made all of that feel like a distant, painful memory. Let’s start with the capacity, because 9 gallons is a genuine game-changer. I’ve got about two acres I manage, including fence lines, a gravel driveway, and a pretty stubborn patch of thistle that I’ve been fighting for three summers. With my old 1- and 2-gallon hand pumpers, I was constantly stopping, mixing, refilling. With this tank loaded up, I can cover serious ground in a single outing — we’re talking the entire perimeter of my property plus the driveway in one go. That alone is worth the price of admission. Assembly was shockingly simple. I’m not a mechanically gifted person. I will be the first to admit that. But I had this thing fully assembled and ready to spray in under 15 minutes straight out of the box. No confusing diagrams, no leftover mystery parts, no YouTube rabbit holes. Everything clicked or threaded together intuitively. My wife even commented that I seemed suspiciously confident — and she was right to be suspicious, because usually I’m not. The electric pump is where this thing really earns its stars. Consistent, steady pressure without any manual pumping whatsoever. You just walk, aim, and spray. My shoulder used to ache for two days after a big spray session. Now I finish the job and feel completely fine. The spray wand gives you good control over direction and reach, and the pressure stays reliable from the first gallon to the last. Portability is better than expected for a tank this size. I was a little nervous that 9 gallons would feel like hauling a small car around my yard. It doesn’t. The design balances well, the straps are comfortable, and once you get moving it becomes second nature. I’m not a young man anymore, and if I can handle it comfortably on uneven terrain, most people will be just fine. My results after one season: ∙ Fence lines: completely clear ∙ Gravel driveway: best it’s looked in years ∙ Thistle patch: finally, FINALLY losing the battle against me ∙ Time spent spraying: cut by more than half compared to my old setup Who this is perfect for: Anyone managing more than a small suburban lot. If you’ve got acreage, a large garden, pasture edges, or just a lot of ground to cover, the combination of a 9-gallon tank and electric pump means you’ll actually finish the job in one session instead of spreading it across an entire weekend. Zero complaints. Genuinely none. This is one of those rare purchases where I immediately thought “why didn’t I buy this years ago?” If you’re on the fence, get off it — and then go spray the weeds growing along it. Highly, enthusiastically recommended. 🌿

I was excited to get this cart sprayer as an upgrade from a 3 gallon hand pump sprayer that I had been using for years to treat my lawn for insects. The cart assembled easily, and the next day I decided to use it to spray my lawn. I turned on the pump for a second just to verify it would run, which it did so I filled the tank with insecticide and water then went out to spray the lawn. To my disappointment, nothing would spray out at all. I tried both the wand and the sprayer off the back of the tank, neither would expel anything. The pump was definitely running, so I took off the back cover to inspect what was going on, and it turned out there was no liquid in the tubing going from the tank to the pump. Figuring it was just a clogged up port, I emptied the tank (not terribly easy with 9 gallons of insecticide in it) and checked the port from the tank to the pump, only to discover that the tank had not been drilled out where the hose is screwed to the tank. That's right, the tubing was connected to the tank, but there was NO HOLE for the liquid from the tank to move into the tubing to the pump. There's absolutely no way this tank was tested after it was manufactured. I drilled it out myself, reconnected everything, refilled the tank, and everything worked great... that is, until the battery ran out only 15 minutes into using it. Pros: while the battery lasts, this sprayer works very well. I could use it to spray my entire lawn (1/3 acre) in less than 30 minutes - however the battery only lasts 5 minutes.. Cons: poor quality control. The battery is awful. Brand new it only held a charge for 15 minutes, now I get only about 5 at best.