Got this to charge my devices, one of them being a MacBook Pro with MagSafe 1. Using a DigiLink USB-C to MagSafe cable, this proves very useful and versatile. Not grounded tho, which will make you devices to buzz you if they have metal parts... such a shame in 2020.
Had to artificially slow down my computer using TLP under Linux, because it needs more than 80W, otherwise the charger would stop and start continuously when under load. Still wondering how it's delivering 18.5V when the standard says it's either 15 or 20V...…plus