Review on 💡 LinkOn Ganius 136W GaN Tech Wall Charger with 100W USB-C PD3.0 PPS and 18W USB-A QC4.0+ - Compatible with MacBook 2019, Dell, HP, Surface, Lenovo, Samsung S20 Ultra, Note 10+ - Portable Travel and International Use by Jason Rawls

This charger has all the features I need for my constant travels. High power output to charge all my devices at the fastest speeds. I uploaded my devices to test it. My Surface Pro, Tab S4 (Fast Charge) and Note 20 Ultra (Super Fast Charge) are charging. I was excited. I then unplugged everything but the Surface and plugged in the battery to charge. Then it happened, that awful high pitched hum that I've heard from other chargers like this. I'll give it the rest of the day before coming back (if I can avoid a headache), but the high-pitched rumble is unbearable for everyday use. It does get a bit warm during use, but I wouldn't mind that given the size-to-power ratio.