Everything is flimsy, Chinese, but in general it fulfills its functions. Put and he charges, he regulates the voltage and current strength.
The quality of the components is terrible, of course. The manufacturer was not shy at all in pursuit of their cheapness. Separate moment - the fan. It is small, poor quality, improperly installed and buzzes like an airplane. You won't be able to sleep in the next room. To put a large one on top, and not a small one at the back, would cost 100 more. But no…