This fast wall charger compatible with both Quick Charge 2.0 (QC 2.0) and Adaptive Fast Charging (AFC),enables mobile phone to be 50% charged in 30 mins (Galaxy S9 is used as the test object, it has a 3000mAh battery and supports the Quick Charger 2.0), 75% faster than conventional chargers.
You should not be concerned the fast charger gets hot when charging.
"The purpose of this AFC technology is to get the phone charged faster to a percentage of 50 to 60 percent. During charging, the phone may become very hot. It will cool down after 60% of battery. Therefore, AFC is actually not used to fully charge a device."
Compatible Fast Charge Device:
Galaxy S22/S22+/S22Ultra/S21,S21+,S21Ultra,Note 20,S10, S10+ Plus, S10 5G, S20, S9, S9+ Plus, S8, S8+ Plus / Active, Note 10,Note 10 plus
Huawei P30 Pro, P30 Pro, P20, P20 Pro, P10, Mate 30, Mate 20, Mate 10
Lenovo Zuk Z1 / Z2 / Z2 Pro / Edge
HP Pavilion X2 / Spectre X2
Google Pixel / Pixel XL / Pixel 2 / Pixel 3 / Pixel 3XL / Pixel XL2, Nexus 5X / 6P
Nokia N1 Tablet / 9 Microsoft Lumia 950 / 950 XL Asus Zen AiO / Z580C tablet Xiaomi 5 ZTE Axon 7 And More