With the increasing proportion of digital products in people's lives，Modern people are also gradually suffering from "electricity anxiety disorder"。 in daily life，The difference in the charging speed of mobile phones has also become a problem when we are in a hurry。 To solve this problem，Major manufacturers continuously optimize the charging performance of mobile phones，Let's just take a shorter time，can meet the charging needs。
As technology continues to develop，Now the charging efficiency is also significantly improved。August this year，Xiaomi MIX 4 officially released，The machine is equipped with a 4500mAh large battery and 120W second charging technology at room temperature。 Xiaomi MIX 4 supports two charging modes，Constant temperature mode can be charged to 100% in 21 minutes;Fast mode charge to 80% in 10 minutes，15Full in minutes。
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This data is ahead of the vast majority of mobile phone products on the market today，Then the 120W second charge is really better than the 55W commonly used by everyone.、60Is W twice as fast? Next, the author will compare the two mobile phones of Xiaomi Mi 11 and Xiaomi Mi MIX 4，Let's see if 55W VS 120W extreme fast charging is real or a commercial gimmick?
Due to the difference in battery capacity between the two phones，To ensure the accuracy of the data，The author started charging both phones from 1%，And make a simple conversion through the formula：
Xiaomi MIX 4 charges 100% in 17 minutes，then：4500mAh ×1=4500mAh
Millet 11 67% charge in 17 minutes，then：4600mAh x 0.59=2714mAh
Compare by conversion，we can get，The same is charged for seventeen minutes，120W charged 1786mAh more than 55W。
through the picture above，We can see that，The charging data is almost the same as the official data.。 (due to different test environments，The specific data will be slightly different，Subject to the actual situation)
in summary，Xiaomi MIX 4 from 1% charge to 100% spent 17 minute，Millet 11 from 1% charge to 100% spent 45 minute，In fast charge mode，120W is faster than 55W 28 minute，The charging speed is indeed a significant improvement over 55W，The charging speed of the two is more than doubled。
For users who are particularly concerned about charging speed，I think Xiaomi MIX 4 is still worth buying，Interested readers can click the link below to purchase。
Related Reading：
Xiaomi MIX 4 Evaluation
Xiaomi Mi 11 Pro detailed evaluation
Mi 11 Ultra review
Mi 11 Lite detailed review