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Get ready for heat: If you're running anywhere close to the rated wattage (or above), expect your USB-C laptop charger to feel toasty to the touch. In our tests, after 20 minutes of running at one watt below their rating (ex: 64 watts on a 65-watt charger), temperatures ranged from 119 degrees Fahrenheit (48.3 Celsius) to 154 degrees (67.8 Celsius). That's unpleasant, but not dangerous. You can get a cooler skin temperature by purchasing a higher capacity charger than you need and running it at less than its maximum. Plus, we don’t even really know the particulars of said negotiation – according to the article, they used load testers set to deliberately overdrive the power supplies. A real-life, laptop-grade PD sink is a subtler construct, designed by dint of obediance to the PD rules to specifically not do this kind of thing. The fact that the RavPower supplies reset themselves under these contrived and extreme conditions is good behavior, no? The only difference with wattage and amperage is that so many people have been misusing these words persistently that they have become accepted.
No one should play Russian roulette with their expensive electronics. And with the amount of fragmentation in the USB-C market, even the best chargers may not work properly with all your devices (especially if they aren't used with a quality, compatible USB-C cable).
FAQ
There are four USB ports in all—three USB-C and one full-size USB-A—two of which support a 100W output, with the other two rated at 22.5W. There’s a maximum power output of 100W, which means when you use more than one port the power rating will be reduced, but it’s still possible to get up to 65W on either of those two 100W USB-Cs. on Dell internal analysis using publicly available specs in August 2023 comparing maximum effective capacity for PowerStore 1200 and FlashArray //X20. Assumes average 4:1 data reduction for PowerStore, 5:1 for Pure Storage. Actual results vary.
Accidental Damage-Additional Information: Accidental Damage Service excludes theft, loss, and damage due to fire, flood or other acts of nature, or intentional damage. Customer may be required to return damaged unit to Dell. Limit of 1 qualified incident per contract year. For more information, consumers visit Accidental Damage Service Contract (Consumer) or commercial customers visit Accidental Damage Service Contract (Commercial). As an electrical engineer this article really makes me cringe. Not because there is a lot wrong with the tests done, and also not the low technical depth. No, the contents are fine but the constant use of the horrible words wattage and amperage are offending and make my brain hurt. Now unfortunately these words have been misused so much that they have become part of the normal vocabulary, that's how languages work. However anyone who knows the proper words would never use those. So I hope you will use the proper words next time, they are power (or rated power) instead of wattage and current instead of amperage. We haven’t seen PD chargers this small before. They are tiny—about the size of Apple’s weedy 5W iPhone charger but over 10x more powerful. The 65W Nano II charger weighs just 132g and comes in at 41.7-x-36-x-44mm. The US version features neat foldable pins.
Charger shut down before 20 minute stability / heat test could complete at that wattage. Finding Discounts on the Best USB-C Laptop Chargers
Boasting four USB-C ports and two USB-A, it can supply up to 200W of power (maximum 100W per port as it’s PD 3.0), and therefore could charge three mid-sized laptops, a couple of phones, and your headphones simultaneously. For the curious, here is a fantastically well-written and rigorously illustrated article on this subject, describing the minutiae of a PD implementation bug (in Apple’s own hardware, no less!) that I would recommend to all interested parties. At 14.7oz (417g) it isn’t super-lightweight but is a desktop charger so will probably not be travelling with you.The OneWorld 65 looks like any international adapter but boasts a built-in 65W PD Charger and can charge up to six devices simultaneously.
As of 2019, a new and ground-breaking technology stands a chance of revolutionizing the charging industry: GaNFast USB-C chargers. Navitas Semiconductor invented a new way of building the integrated circuits that go into laptop chargers and computer power supplies based on a material called gallium nitride (GaN). Maximum power output is 65W so if you are charging a mid-sized laptop in full use, there won’t be much spare juice for the other devices. However, if the laptop is just having a battery top-up, there should be enough power to be spread about.RAVPower Pioneer 90W (RP-PC128) : In theory, this charger would be a decent one, because it has dual USB-C ports. However, it can’t exceed its 90-watt rated maximum for any length of time and, considering that the most powerful MacBook Pros now use 96-watt chargers, it’s hard to recommend this over the Aukey PA-B5, which is rated for 100 watts and can deliver far more. Gallium Nitride (GaN) technology has made chargers a fraction of the size of silicon-based models only a couple of years old, and once considered small themselves.
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