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Full of 4500mAh in 23 minutes! Does the 120W second charge of millet affect the battery life?

via:驱动之家     time:2020/8/12 18:47:21     readed:1040

With 120W second charging, 120Hz screen, 120x zoom and three 120s, the commemorative version of Xiaomi 10 released yesterday is particularly eye-catching. This is the first mass production of 120W ultra-high power limited charging in the industry.

The ultimate effect isAnd don't forget,Xiaomi 10 supreme commemorative edition is equipped with an equivalent 4500mAh large battery.

How does Xiaomi 10 supreme commemorative edition achieve 120W second charge? Does it affect life span? Is charging safe? Xiaomi official answer.

Super efficient charge pump with 98.5% conversion

Xiaomi 10 Supreme Commemorative Edition adopts a new 4:2 high power charging architecture. By decomposing large current into two channels of small current charging, it not only reduces the impedance of charging path, but also improves the overall conversion efficiency.Two charging channels are equipped with ultra efficient customized charge pump charging chips to form a dual charge pump parallel architecture.


Among them, the conversion efficiency of two customized charge pumps is as high as 98.5%, which not only makes the charging conversion rate higher, but also greatly improves the charging stability.In the process of 120W high-power charging, the two-way 20v-3a high-voltage current is converted into two-way 10v-6a low-voltage current, and finally converged into 10v-12a high-voltage input battery.

This charge pump chip is specially customized by Qualcomm according to Xiaomi's charging requirements. The charge conversion efficiency is much higher than that of the past charge pump chips, with higher charging efficiency and lower loss, which reduces the energy loss in the charging process from the source. Secondly, the more efficient customized charge pump can reduce the heat generated during the charging process, and the lower charging temperature further extends the duration of high-power charging and improves the charging speed.

A 4500mAh battery is inserted into the limit space of graphene based butterfly double string battery

For 120 W of high power charging,Xiaomi 10 supreme commemorative edition adopts a brand new butterfly type double string battery. Two 2250mah cells are connected in series inside the battery, equivalent to 4500mAh。 The structure design of butterfly double cells in series can double the charging power under the condition of constant charging current.

Compared with the traditional side-by-side double string battery, the newly designed butterfly package has smaller protection circuit and larger battery capacity under the same volume. The back of the protection circuit is also added with phase change heat storage material, which can effectively alleviate the temperature rise of the battery during the charging process and prolong the duration of high-power charging.


Secondly, Xiaomi 10 supreme commemorative edition has also made many customized designs for the battery to meet the demand of 120W high-power fast charging.Compared with the traditional battery, the internal resistance of the cell is reduced by 36% compared with that of the traditional battery, which realizes lower charging loss and faster charging speed, and the temperature during the charging process can also be reduced by 4.8 ℃

secondly, The Millet 10 Top Commemorative Edition adds a new high-conductive material to the battery cathodeThe conductivity of the battery is 1000 times that of the traditional carbon black material, which greatly improves the charging efficiency of the battery.

A thicker dual FPC with lower impedance is used between the battery and the motherboard. On the one hand, the dual FPC is conducive to the current diversion, avoiding the FPC connector overheating and dispersing the heat source during the high-power charging process; on the other hand, the thicker and lower impedance custom-made FPC can effectively reduce the energy loss during charging, reduce the heating and improve the charging efficiency.

In addition, Xiaomi 10 supreme commemorative edition also uses battery sense cell voltage monitoring technology to accurately detect the real voltage of the cell, effectively avoid the error caused by the battery protection circuit, and match more accurate charging strategy in the charging process, which further shortens the overall charging time.

In addition, cell voltage detection combined with cell balance algorithm can balance the voltage difference between two cells, avoid overcharge of high voltage cell and over discharge of low voltage cell, and prolong the service life of battery.


34 safety protection charging worry free independent charging control chip abnormal one button power off

Xiaomi 10 supreme commemorative edition not only charges quickly, but also adds up to 34 safety protection measures to ensure the safety of high-power charging, which truly ensures the comprehensive protection from charger, mobile phone charging circuit to battery.

The independent charging safety chip is added outside MCU charging circuit. Once the abnormal charging state is monitored ,120 W can be turned off directly. The anti-irrigation circuit is specially designed for high-power charging to avoid the damage caused by the use of 5 V chargers during charging. Type-C charging port adds more corrosion-resistant alloy materials and reduces corrosion problems caused by high-power charging

In addition to hardware protection, Xiaomi 10 supreme commemorative edition has also passed the German Rhine t? V safe and fast charging certification 3.0, which can experience the fast charging pleasure without worrying about safety problems.

The effective capacity of 800 complete charge discharge cycles shall not be less than 90%

The 120W fast charging of Xiaomi 10 supreme commemorative edition can charge 41% in 5 minutes and 100% in 23 minutes. In fact, the charging speed can be faster.

First of all, this is a multiple-choice question. On the premise that the battery volume is relatively close, choose a faster charging speed or a larger battery capacity, while the Xiaomi 10 supreme commemorative edition chooses the latter, with a battery capacity of 4500mAh. The larger battery capacity guarantees the battery life, especially in the current 5g environment. In daily use, fast charging is a supplement to the large battery. The improvement of charging speed is actually a means to supplement the endurance in disguised form. Xiaomi 10 supreme commemorative edition has chosen to give priority to ensuring the long service life of large batteries.

In terms of battery life, Xiaomi 10 supreme commemorative edition adopts fast charging battery with high life,After 800 complete charge and discharge cycles, the effective capacity of the battery is not less than 90%, while the industry standard battery generally adopts the standard of 60% of 400 cycles

In the long run, Xiaomi 10 supreme commemorative edition can greatly reduce the decline in the effective capacity of the battery and ensure the long-term service life of the mobile phone.


Xiaomi 10 supreme commemorative edition not only has 120W high-power wired second charging, but also supports the fastest 50W wireless second charging, which can be charged to 100% in 40 minutes. The charging speed is even faster than the 50W wired charging on the market. With 10W wireless reverse charging, it really achieves an all-round and all scene super fast charging experience.


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