A few days ago, the Xiaomi sub-brand Redmi introduced the flagships Redmi K40, Redmi K40 Pro and Redmi K40 Pro+. All three have 4520mAh batteries with 33W fast charging support, which the manufacturer says charge as fast as competing gadgets with more powerful charges. The company has now posted a video confirming this.
The video compared Redmi K40, Vivo X60 Pro + and Huawei Mate 40 Pro. The same conditions were created for them: device turned on, full charge from 0% to 100%, original charging adapters.
As a result, the fastest charged Vivo X60 Pro + with a 4200 mAh battery and 55W charging power. His result is 45 minutes 25 seconds. But the most interesting thing is that Redmi K40 came to the finish line 28 seconds earlier than Huawei Mate 40 Pro, which has a 4400 mAh battery and a 66 W adapter.
How is this possible? It’s just that smartphones have different charging technologies. The battery in the Mate 40 Pro uses maximum charging power only to a certain level, after which the speed drops so as not to harm either the gadget or the battery. In turn, Redmi K40 uses MI-FC technology, which allows you to charge your smartphone more evenly, without strong current fluctuations. Thus, more powerful charging does not always mean faster results.