ALIENTABI Backpack Sprayer 4 Gallon, Self-Cleaning Battery Powered Backpack Sprayer for Weeding, Cleaning, No Gear Limit, Variable Pressure

I did a lot of research when replacing my old hand pump backpack sprayer with a battery powered one. One of the features that helped me decide on this sprayer was the self-cleaning feature. I have a large pond and need to spray algicides in order to keep the surface clean. That leads me to the second reason I chose this sprayer. It sprays at least 30 feet horizontally depending on wind and chemicals being sprayed. When I received the sprayer, I was immediately impressed with the manner in which it was packaged. After some minor assembly and charging the battery, it was ready for use. I ran a tank of plain water in it first to see the different spray patterns of the three included tips. After that, I mixed up some algicide and put the sprayer to use. I was a little concerned at first that the straps did not include straps across the stomach. After properly adjusting the straps, I realized that a strap across the stomach was not necessary. It does have a strap with buckle across the chest. The unit is very comfortable on the back and the on/off/variable pressure dial is easy to reach. When I finished spraying, I rinsed the tank since I used the entire mixture minus just a very small amount in the bottom of the tank. I poured a bucket of water and attached the self-cleaning pickup hose. I flipped the diverter valve to clean and pumped plain water through the pump, hose, and nozzle. It doesn't get any easier than this. The battery has a lot of charge left in it so there is no need to charge it after each use. Given all of the choices out there, I am really glad I picked this one. Absolutely no leaks, a strong performer, and not at all uncomfortable on the back. This is a solid piece of equipment. I am in high hopes it gives me years of trouble-free service.

This sprayer works great. The rechargeable battery lasts a long time and is very powerful, making it ideal if you need to spray a long distance. Just be aware that even on the lowest setting, which I use all the time, you will use more product than you do with the hand pump sprayers. Just set your nozzle so you don't have to swing it back and forth to cover your area and walk fast.

I have looked over a number of backback sprayers, and knew that I wanted a battery powered one so that it can spray more evenly. I have used pump style sprayers before and once the pressure gets lower I tend to overspray or underspray areas, so I knew a battery powered one would keep a constant stream (hopefully). This product has features that I haven't seen on any other battery powered backpack sprayers, such as the pressure washer style spray attachment which can use the same nozzles as pressure washers. Other backpack sprayers have weak plastic nozzles pointed at weird angles. The motor isn't loud and I can dial in the pressure I want which is also a unique and useful feature. I thought I would really like the rinse feature, but I will probably never use it only because it seems like it would be easier to attach a water hose to the tank at a lower pressure and then use the sprayer to cycle through the water coming from the hose to rinse it out. Though the rinse feature can also be used to transfer fluids and you may have to own it to know what I mean. The manual states this which is where I got that idea from. The description makes it sound like is has a super duper smartphone battery, when in fact its just a regular power tool battery, and a low voltage one at that. It is only 18.5 volts, and perhaps it has to be lower in order for the tank not to be emptied immediately at full power. They could probably greatly increase their sales and lower their price if they used the same batteries as the Black N Decker 20V power tools which probably all of us already own and sell it as (tool only). I read backpack sprayer reviews stating how heavy they are when filled with liquid, but I have no problem with it. I suppose all of those years carrying heavy books in my backpack and walking to school paid off. So if they ever release a newer version in the future, I would suggest that the sprayer hose can unscrew from both ends and use Black N Decker style batteries. I will use this to spray products on my large lawn that do not work with hose sprayers. I thought about getting a tow sprayer to use with my riding mower, but I don't have anywhere to put it so this smaller backpack can be placed on the shelf in my garage. UPDATE I have used this about four times already to spray weed killer on my lawn and it has worked perfectly. I like how its almost like a weaker version of a 120V pressure washer. The first time I filled it all the way up and didn't have any problem with the weight and the shoulder pads are very thick to absorb any discomfort. The next few times I used it, I didn't fill it all the way up as I didn't need as much and its a lot lighter then (obviously) for those who say it may be too heavy when full.

I have now owned and used this for well over a month and I can only say that is is a terrific product, well worth the money. Every aspect is well thought out and it works beyond my expectations.