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M4

M4 Battery Powered Backpack Sprayer with Rechargeable Power Supply

Based on 36 reviews
Condition: New
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$269.99

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Availability: In Stock.
Fulfilled by MY4SONS

Arrives Nov 8 – Nov 12
Order within 22 hours and 33 minutes

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At a glance

Condition
New
Size
M4 + 15 ft Extension Hose
Model
M4
Color
Silver
Material
Plastic, Stainless Steel
Tank Volume
200 gal
Hose Length
15 feet
In the box
BatteryChargerHoseStainless Steel Adjustable WandPlastic Acid Bleach WandCone NozzleFan Tip NozzleFog NozzleVariable Nozzle

Features 5

  • RECHARGEABLE BATTERY FOR EXTENDED USE: The My 4 Sons silver M4 4-gallon backpack sprayer is powered by a reliable 8Ah rechargeable battery (included), providing 6-8 hours of use or covering over 200 gallons on a single charge. The adjustable pressure dial allows you to switch from 20 to 60 PSI, offering precise control for various tasks. Efficient and versatile, its perfect for garden care, cleaning projects, and larger areas.
  • HEAVY-DUTY CONSTRUCTION: The M4 backpack sprayer is designed for durability with a reinforced hose that can withstand high temperatures and pressure. The stainless-steel wand ensures precise application, while the watertight neoprene lid seal prevents leaks, keeping your liquids securely stored. Built to endure regular use, this sprayer is great for a range of tasks requiring consistent and dependable performance.
  • EASY TO USE AND COMFORTABLE DESIGN: This cordless sprayer features a wide-mouth opening for easy filling and a screen filter to keep debris out. Its on/off and flow control switches are conveniently placed for easy access, allowing you to adjust the flow during use. The XXL shoulder straps provide comfort for both short and long spraying sessions. The battery compartment is simple to access, ensuring smooth setup and an effortless spraying experience.
  • VERSATILE NOZZLES, WANDS, AND 15-FOOT EXTENSION HOSE INCLUDED: The sprayer comes with ten nozzles, including adjustable brass cones and fan nozzles, for various tasks. It features an extra-long stainless-steel wand with a flexible tip for precise applications in hard-to-reach areas. The 15-foot extension hose provides greater reach, while the one-piece valve handle enhances ergonomics and control, making it easy to adjust the flow during use for versatile project applications.

Description

MY 4 SONS is a family owned business that specializes in high-quality, battery-powered backpack sprayers, offering innovative solutions for various applications such as gardening, pest control, and maintenance. We focus on versatility, ease of use, and efficiency of our products, designed to meet a wide range of needs. We feature a range of backpack sprayer models and compatible accessories to make your spraying experience easier. Efficient, powerful & environmentally responsible, M4 Battery-Powered Backpack Sprayer is built for easy spraying! Experience the power, precision, and comfort of the M4 Agitator Backpack Sprayer, designed for optimal performance in every use. Dedicated to delivering high-quality products and exceptional service, we are committed to meeting your needs with every purchase. Navigate any terrain with 14" Monster Cart Wheels, designed for enhanced mobility and efficiency. Say goodbye to the hassle of manual pumping and hello to uninterrupted spraying with the MY4SONS M4 Cordless Battery Powered Backpack Sprayer. Equipped with a powerful 8Ah battery, this sprayer delivers 6-8 hours of continuous use, covering over 200 gallons on a single charge. That’s 4X longer-lasting than standard lithium batteries, giving you the freedom to tackle large lawn areas, gardens, pest control, or landscaping tasks without stopping to recharge or pump. Designed for efficiency and durability, this sprayer ensures that your job gets done quickly and smoothly, whether you’re spraying for weed control, bug prevention, or cleaning. With the MY4SONS M4, you can focus on your task, not the equipment, making it a reliable and powerful solution for professionals and homeowners alike. The MY4SONS M4 Battery-Powered Backpack Sprayer is designed to provide seamless spraying with all the attachments you need to get the job done quickly and efficiently. From the powerful 8Ah lithium battery to the 15-foot hose, stainless-steel wand, and adjustable nozzles, this sprayer ensures you’re equipped for any task, whether it's watering plants, controlling pests, or cleaning hard-to-reach areas. Precision and versatility come standard, with multiple nozzles included, allowing you to switch between different spray patterns for any application. Whether you're working in the garden, on the lawn, or tackling multi-purpose spraying, the MY4SONS M4 has you covered. The MY4SONS M4 gives you the freedom to spray without limitations. Thanks to its powerful lithium battery, you can spray across large areas or remote spaces without the hassle of cords. Offering uninterrupted use for long periods, it’s perfect for gardens, yards, and hard-to-reach locations, making your spraying tasks more efficient and convenient. With the adjustable 60 PSI pressure, the MY4SONS M4 allows you to fine-tune your spray to match any task, from delicate flowers to tough cleaning jobs. Whether you're applying fertilizers, disinfecting, or tackling stubborn dirt, this sprayer ensures you get the exact flow and pressure you need, providing maximum flexibility and consistent performance every time. The 4.5-gallon tank of the MY4SONS M4 allows you to spray larger areas without needing to constantly refill. This means more time focused on your task and less time spent refilling. Whether you're a professional landscaper or a homeowner with extensive outdoor spaces, this sprayer’s large capacity helps you cover more ground efficiently, making it the perfect tool for all-day projects. The leak-proof design of the MY4SONS M4 ensures that you can focus on the job without worrying about spills. With a secure, durable lid, this sprayer provides peace of mind during transport and use, keeping your task clean and mess-free. Designed to withstand tough outdoor conditions, it’s built for long-lasting, reliable performance. The MY4SONS M4 Battery-Powered Backpack Sprayer is designed to handle a variety of tasks with ease, making it the ultimate tool for gardening, cleaning, and disinfecting. Whether you’re caring for your plants, cleaning outdoor surfaces, or sanitizing high-touch areas, this sprayer adapts to your every need. In the garden, it’s perfect for watering, fertilizing, and controlling pests with precision, ensuring healthy plants and a well-maintained lawn. The sprayer’s versatility extends to cleaning, effortlessly handling tasks like washing patios, fences, and furniture. It even works great for disinfecting, allowing you to treat surfaces with ease for a cleaner, safer environment. With adjustable pressure and multiple nozzles, the MY4SONS M4 gives you complete control over your spraying, making it ideal for a wide range of applications and helping you get the job done faster and more efficiently.

Specs 20

Brand M4
Tank Volume 200 gallons
Color Silver
Recommended Uses For Product Garden sprayer, Pest Control, Sanitizing, Weed Control, Chemical sprayer, Fertilizer sprayer
Material Plastic, Stainless Steel
Brand Name M4
Model Name M4
Model Number M4

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 8 – Nov 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


Love it
Size: M4 + 15 ft Extension Hose
We have gone through so many sprayers that have ended up as more plastic in the trash. They rust, they leak, they stop working. I finally pulled the trigger on a more expensive power sprayer. We researched it and this one look like the best bet. First of all, if you’ve never used a power sprayer before, you will be shocked by the amount of product you r able to put out on the plants, and how quickly it gets applied . Night and day from a hand pump. Also, with a high pressure sprayer like this, using this large assortment of different tips, you can achieve very fine atomization of the spray product which gives much better coverage. A fog that will envelop the entire plant going under the leaves as well as on top of them. This, providing you are spraying on a day without strong winds. The telescoping stainless steel wand is very nice, but remember, you cannot use it with acids like vinegar or other asset based herbicides. For that, use the supplied plastic wand. One tiny criticism, I am 6 foot two and I wish it was about 3 inches longer. We decided years ago to stop using round up because of the danger to our pets and kids and so are using this mostly for a much safer acid based herbicide called suppress. The sprayer works perfectly! It was shipped without a battery door, so I sent an email to the manufacturer/seller who answered the same day and had the part in the mail the next day. Now that was refreshing. I believe these are USA designed Asian made and inspected and serviced in the US. One huge benefit, you can actually buy spare parts, and upgrades from the manufacture. Very unusual and impressive. In any case, we are thrilled so far and hope that the great service will keep this thing out of the trash. One last note, the harness and straps are strong, wide and very padded. The harness also includes a very effective holster for the wand which keeps it from flopping around in storage. Also, be sure to check out the videos provided by the manufacturer. They are extremely helpful. ... show more
Reviewed in the United States on April 20, 2024 by 30 Weight

American manufactured, stellar customer support, performs wonderfully
Size: M4 + 15 ft Extension Hose
I don’t know why put up so long with those compressed air-style sprayers that are hand pumped. One exerts so much effort in return for petty amounts of spray… and much of one’s spraying time is rewarded with a weak stream just because it is so tedious to do all that pumping. The MY4SONS M4 uses good an old-fashioned lead/acid battery instead of a lithium-ion battery, so you can keep the thing plugged in and recharging without fear of degrading battery capacity. The M4 comes with a wide variety of tips and tip accessories, which is actually a bit of a downfall because the tips come in both plastic and metal varieties where not every accessory, like a flex adapter, will work with every tip. It’s unclear what fits what and this “tip menagerie” is the only reason I might have derated the M4 from five to four stars. I corresponded with the company owner to offer a suggestion to improve the tips and he immediately started working on the problem. Queue the “Mister Sandman” song. What is truly outstanding is that the MY4SONS company is a smallish American-family manufacturing that offers stellar (six stars on a five-star scale) customer service. Because of this customer service, I boosted the overall rating back up to five stars. If you need a better garden sprayer, stop fretting and just buy the M4. I like my M4 so much, I made a special shelf for it (see photo). ... show more
Reviewed in the United States on November 17, 2024 by Ms. Moneypenny

If you have property, this is a must
Size: M4 + 15 ft Extension Hose
I have acreage, and it requires a lot of fence line, and multiple homes that needs weed control, and insect control. I had been, for years using a pump sprayer (mind you it's an Echo and high quality) isn't user friendly with shoulder issues to begin with. This sprayer came highly recommended and was well thought out. It came with EVERY ATTACHMENT you could possibly need day one, easy to assemble, utilizes and old school lead cell battery, which is easy to replace when needed, charges really well, no memory, and I can spray several acres of fence lines in a matter of an hour or two depending on my walking pace. Pressure is adjustable (on this model) and more than anything the pressure is CONSISTENT, which is important for uniformity if you're OCD about appearance. Which I am. Now, it doesn't come with four sons to help you, you'll have to make that happen, but this is worth every single penny. Hands down one of the best purchases I have made in years. ... show more
Reviewed in the United States on December 12, 2023 by Evan C Starke

THE HARNESS IS CHEAP
Size: M4 + 15 ft Extension Hose
It doesn't matter how well the pump works or the tank when the harness is an absolute POS. If I had known I would have bought an alternate brand.
Reviewed in the United States on March 25, 2026 by Fairway F.

High Quality / Excellent Service!
Size: M4 + 15 ft Extension Hose
Hi quality - good design and great workmanship! Excellent quality service. I was shocked how quickly they responded. . Liked it so much that I bought the 2 gallon sprayer for pond applications. Suggestion - buy the parts online they are very fair in price. Make sure you buy everything (reducers, adaptors, quick release) on an order the shipping can get a bit pricey if you piece meal the purchase. ... show more
Reviewed in the United States on July 17, 2025 by Rancher

Makes life easier
Size: M4 + 15 ft Extension Hose
I grow rare succulents from seed and was having trouble lifting a watering-can full of fertilizer over my head for half an hour to fertilize the plants on the top shelf. This was a godsend. I bought it with the 15ft extension hose, removed all the backpack parts, don't use any of the nozzles, just carry it around and use the wand with no nozzle. Now with three fills of this thing I have all my plants fertilized and my back and arms aren't sore. Great! ... show more
Reviewed in the United States on April 17, 2022 by Dave Thurbon

Great sprayer
Size: M4 + 15 ft Extension Hose
I've been using these sprayers for a few years. Great product. I ordered lithium batteries to reduce the weight and they work great
Reviewed in the United States on June 14, 2024 by James Hunht

It leaked, leaked, leaked!
Size: M4 + 15 ft Extension Hose
All of its written material repeatedly stressed its careful construction and quality control, but let me tell you the tank leaked like a seive right out of the box! I left messages on both of the contact numbers twice but no one ever got back to me. Finally I had to implore my poor overworked husband to fix it for me. I'm really disappointed! This thing is not cheap! Come on guys, stand by your work! ... show more
Reviewed in the United States on March 6, 2025 by theponyfarmer
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