I recently purchased it and I will come back when I have a more complete picture. What I liked is that it works smoothly and with one charge it responds to several fillings. Unfortunately, there are more things that I didn't like, and they are as follows: 1. It is almost entirely made of cheap, thin, and weak plastic. 2. The capacity it claims to have, 16 liters, is borderline. With this amount, it fills up to the brim. This, combined with the weak plastic that compresses when placed on the back, results in leaks and getting soaked. Therefore, in order to spray with relative safety, you have to put a maximum of 14 liters of spraying liquid. 3. The so-called advantage that you can pump if the battery runs out is a disadvantage because the piston is the weak point from which water comes out. 4. The indication (numbering) of liters on the side of the tank to check the quantity of the spraying liquid is very faint to the point where it is almost not visible at all. Additionally, the numbering does not correspond to reality. I repeatedly measured the capacity of the tank with another pressure sprayer that clearly indicates the liters and I found that the capacity differs from the stated capacity of this specific sprayer by more than one liter. That is, its capacity is around 15 liters. I speculate that the tank's numbering refers to the simple pressure sprayer with a flat bottom. This particular one, with the battery, has a cavity at the bottom where the battery is placed. Therefore, the battery takes up space in the tank, more than one liter. These are my observations and I will come back for more.
20/9/22: I come back to mention that despite the weaknesses I mentioned earlier, the sprayer is worth buying just for its strong point, which is its battery that lasts for many fillings, maybe even ten. That's why I add one more star.
