It supports 100-watt charging... for about 10 minutes. Then it overheats (I think) and starts disconnecting and reconnecting every minute or so. It's a miserable experience to use one with a laptop, my laptop keeps dinging over and over again because it thinks it's getting unplugged and re-plugged. That cannot be good for the laptop battery. I own several of these chargers and they all do this so it's clearly not a one-off defect.

They're fine for lower wattages (like phone charging) but a reliable 100-watt charger these are not. Shame on Anker for falsely claiming otherwise.

Just like the title says, it’s awesome and compact. Love how little it is and the price was right. Will definitely buy from Anker again!

Brilliant charger , the size is good and packs a punch

I knew at this size it wouldn't be able to sustain 100W, but I was hoping for at least 80% of claims. It's a 70W sustained charger at best and turns off after 30min load even though it has plenty of ventilation. I bought this to replace my 65W belkin 2 port charger, which is 20g lighter and can sustain 65W all day long. I use it on a 100W gaming laptop which draws around 70W and ocasionally spikes higher during gaming and cause a trip. Not a big upgrade unfortunately.

Excellent