Nickneime , Why should he indicate something if for us consumers it is in no way accessible and not noticeable (except for charging speed)? It is there somewhere in the bowels of the column is implemented. I emphasize that in the power supply itself, apparently there is no "charging" circuitry, there is just an output line with the characteristics of 19V and 3A. Yes, and I doubt that 4 banks of 18650 will charge in 3.5 hours without any quick charge. And even having knowledge of the type of charging, you can’t influence it in any way, just feel the “speed” of the column’s battery charge. Therefore, the manufacturer does not write about the type of charging used, but only about the time
Posted on 03/10/2019, 21:00: Nickneime Well, I wrote there initially that gives me. In general, I think that I made the right conclusions, the charging itself is inside and what it is there - you are right, I do not care for any additional charges, in order to charge the speakers batteries you just need to supply power 19V 3A