The battery is fine, it looks beautiful and sturdy, but the base it has internally to connect to the sink, the separate piece that should screw onto the bottom of the battery just doesn't fit. It is slightly larger in diameter than the battery socket.
The plumber who came to install it gave up after 20 minutes of trying to screw it on and just left.

Very satisfied so far. Practical and high-quality construction, which is also visually impressive.

Unfortunately, it is not good at all. It does not consistently mix the water and the temperature is not as expected based on the cold-hot indicators, resulting in the danger of getting burned or frozen. It is not worth its money, even though the construction is practical

An amazing faucet that I wonder why I didn't have for so many years!!!!!!! You can wash yourself in the sink, wash whatever you want and take it wherever you want, wash the baby, lift it up high and put bowls underneath, move it to the side, bring it to the middle, use it as a shower or leave it as a faucet. Very sturdy, made of brass with a ceramic mouthpiece... something like that anyway. I got rid of an expensive one from interflex and installed this one. I don't regret it!!!! I will also get one for the toilet to wash myself there too!!!!!!!!!!! Maybe I should also put one in the sink, I'm considering it!!!!