140W USB C GaN Fast Charger with 3 Ports, PD3.1 Foldable Wall Charger for Laptops (MacBook Air/Dell/Chromebook), Tablets (iPad Pro), Phones (iPhone 15/14/Pro, Galaxy S22/21, Pixel) - Compact Travel Charger for Home, Office & On-the-Go Use (Black)

The Yoocas SYX140W3C 140W 3 port USB-c charger is a good value - especially when on sale ($20 in Sep 2024 - when I purchased it).One up-front caveat to this review - I don't have the equipment to get the charger to output 140W, but I was able to put enough load on the charger to get it to output a total of 110W as shown in the photo with the device charging a Dell laptop and a portable power brick.A comment on the Dell laptop charging: the laptop has a Dell-branded power brick that charges at up to 130W. However the Dell system uses amperage up to 6.5A at 20V to reach that wattage. The USB-PD 3.1 specification only allows using up to 5A so to get 140W with USB-PD 3.1 the device being charged needs to request 28V at 5A to get that 140W. Since the Dell laptop will only go up to 20V, the most it will get from a USB-PD 3.1 charger is 100W (20V at 5A).The photos I've attached show that when I have the Dell and a portable battery power brick being charged, the charger is outputting 110W total (93W to the Dell and 17W to the battery). I'm confident that the charger would supply 140W to a device that asks for it at 28V (if a cable that supports it is in use). But I don't have the equipment to actually demonstrate it.I did test that the charger will supply to top wattage on any of the 3 USB-C ports, so you don't need to make sure your laptop is using a particular port.There are two things that I think might be a concern to potential buyers depending on your needs:1) the more wattage a charger puts out, the more heat it's going to generate (that's just physics). This unit gets quite hot when outputting 110W - I measured 65C (about 150F). That is too hot for me to hold onto the charger for more than several seconds. However, I posted a portion of a table from a standards document about "Touch temperature limits" for electronic devices. That table indicates that it's acceptable for an electronic device to get up to 77C (or even 94C if the touch will be under 1 second). So I think that technically the charger is within acceptable limits, but if you are going to be using it to charge more than 100W or so you should do so in an environment that it won't be touched (particularly by children) and that any material close to the charger can deal with any ambient heat.2) the charger weighs about 8oz (230g) and is considerably larger than another Yoocas charger I have (a 65W model). It's small enough to travel with, but might be more than some people would want to carry around. On the other hand, it's much smaller than the brick my laptop came with.Right now (early Sep 2024) the charger is on sale for $20. If the two caveats I mention are acceptable, $20 is a very good deal for a 140W capable charger - especially one that you don't need to be concerned with which device goes to which port. The charger will route the top wattage to the device that requests the most.