I bought it recently and I will come back when I have a fuller picture. What I liked is that it works smoothly and with one charge it can handle quite a few refills. Unfortunately, what I did not like are more, and they are the following: 1. It is made almost entirely of low-quality plastic, thin and weak. 2. The stated capacity of 16 liters is marginal. With this amount, it fills to the brim. This, combined with the weak plastics which compress when it is put on your back, results in you getting soaked from leaks. Therefore, to spray with relative safety, you should put in at most 14 liters of spray liquid. 3. The supposed advantage that you can pump it manually if the battery dies is a disadvantage because the piston is the weak point from which water leaks out. 4. The indicator (numbering) of liters on the side of the tank, so you can check the amount of spray liquid, is very faint to the point of being almost completely indistinguishable. In addition, the numbering does not correspond to reality. I repeatedly measured the tank’s capacity with another pre-pressurized sprayer I have, which clearly shows the liters, and I found that the capacity differs from what is stated for this sprayer by more than one liter. That is, its capacity is around 15 liters. I assume that the tank numbering refers to the plain pre-pressurized model, which has a flat bottom. This one, with the battery, has a hollow at the bottom where the battery is placed underneath. Therefore, the battery takes up more than one liter of space from the tank. That’s all, and I will come back with more.
20/9/22: I am coming back to say that, despite the weaknesses mentioned above, the sprayer is worth buying for its strong point alone, which is its battery that lasts for many refills, perhaps even ten. For that reason, I am adding one more star.
24/8/2026. Unfortunately, after a little use and after five years, the battery failed. Now I am looking to see if I can find a replacement.

Excellent for its price.
Much higher quality than another model of another Chinese company that has many good reviews here on Scroutz and is sold at the same price.
It surpasses it in:
* Better support strap (the Chinese one was a joke, the Kraft one is made of the same material as car belts)
* Much thicker steel gun barrel, making it much more sturdy and less likely to bend as easily as the gun on the other sprayer.
* Much thicker and higher quality gun rubber, and the right size to fully stretch your arm when working. The other one was 15 centimeters shorter, resulting in me not being able to reach fine points of the trees and my arm being permanently bent during use.
* Backup pumping mechanism in case you run out of battery or the battery mechanism completely fails in the distant future.

I liked it so much that I bought 2. One for the grass and one for the trees.

You can see some footage of the sprayer and see it in use in the video I made here:
https://www.youtube.com/watch?v=HWgkZGNl0LY