Xiaomi's "100W" fast charge goes from 0 to 100 in 17 minutes

We all know that the density of the battery has not kept pace with the energy demand of smartphones, but would you accept a smartphone that has just loaded very, very fast? Xiaomi's attack to a new fast phone charging record: a '100W' fast charge solution. Xiaomi Vice President Xiang Wang shared a Facebook video of the new charging solution in action, saying, "Xiaomi engineers have created a 100-watt fast charging solution that can fully charge a large battery. 4000 mAh in just 17 minutes! "

The video shows a charging run between two phones, the anonymous "100W" prototype from Xiaomi and a phone with "50W" in charge of "Brand O", which looks like an Oppo RX17 Pro. I put these two powers in quotation marks, because neither of the two phones reaches its rated load speed. The Xiaomi video shows a live live feed reading and the "100W" charge indicates a sustained charge of about 80W (18V / 4.5A) of about 5 to 30%, with a maximum of 88W. The 50W Oppo Fast Charge competing solution peaks at around 40W.

Other than that, what matters is the actual charging speed and Xiaomi's ability to fully charge the phone's battery in 17 minutes is impressive. The test stops when the Xiaomi phone fills up, leaving the Oppo battery blocked at only 65%. Considering that Xiaomi was charging a 4000 mAh battery and that Oppo only had 3,700 mAh, Xiaomi's solution is about 1.6 times faster than Oppo's fast charge, which is currently the most expensive charging system. fast of the market.

Unfortunately, Xiaomi did not give any details about the operation of its loading solution. Heat dissipation, which slows the charge and degrades the life of a battery, is a major concern when charging fast. The Oppo charging solution (called "Super VOOC" on the Oppo phones and "Dash Charging" on the OnePlus phones) solves this problem by duplicating the energy management circuits generating heat to the phone. Inside its exclusive power block. If you use a phone charger other than Oppo, the phone's internal power management circuit will do its best to perform all the usual power conversion, but this will warm up the battery. If you use an exclusive Oppo charger, the phone's circuitry may shut down and all this heat generation occurs in the power supply, away from the battery. It would not surprise me to hear Xiaomi do something similar.

Until now, it is only a demonstration, but Xiaomi is renowned for aggressively adopting a new technology in its devices. Be on the lookout for the 100 W charge in Xiaomi's next flagship product. Xiaomi's non-Chinese competition does not really match technology like this. The iPhone XS and Pixel 3 can only charge 18W fast, while the Galaxy S10 exceeds 15W.