six、Battery and fast charging：Double 67W is here! What makes the 11Ultra plugged into a 5000mAh battery?
When I first learned about the paper parameters of Xiaomi 11 Ultra，The author did not match the real machine in front of me for a while - how could it be possible to use an ultra-large GN2 with two other large-sole main-calender IMX586 (one of which is a periscope)、NFC module、Wireless charging module、Snapdragon 888 and its supporting complex heat dissipation structure are simultaneously built into the 8.38mm body，Can it also guarantee a single-cell large battery with 5000mAh? ? ?
After some understanding and research，The answer is becoming clearer。first，everybody knows，Want to increase the battery capacity，It will inevitably be accompanied by the expansion of the mobile phone。Because the energy density of traditional graphite negative electrode batteries has reached the theoretical limit，Difficult to improve further。
to this，Xiaomi has tried silicon negative battery technology on MIX Alpha，Now it has achieved results on Xiaomi 11 Ultra - the first super fast charging silicon oxygen negative electrode battery to be released，By "silicon doping lithium"，Make silicon particles less likely to powder，Bring 10 times the theoretical capacity of graphite。
To go deeper，Usually the battery uses graphite negative electrode，Its theoretical gram capacity is 420mAh/g，2019The actual value reached the highest in 2019 to 370mAh/g。The theoretical capacity of silicon-based negative electrode material is 4200mAh/g，The theoretical value is 10 times the former theoretical value，One of the solutions called silicon oxygen negative electrodes will achieve the actual capacity of 1400-1800mAh/g，However, the most mature commercial solution is 420mAh/g、450Two silicon-based anode materials with mAh/g。
That means，The battery capacity of the silicon oxygen negative electrode solution can be increased by 10-20% under the same mass volume。In other words, an ordinary mobile phone can hold 4000mAh，Using silicon oxygen negative electrode can achieve 4400-4800mAh，This is why the Xiaomi 11 Ultra can plug a 5000mAh battery under the premise that the body space is so limited。
70%brightness、30%In the case of volume，Connect to Wi-Fi to play 1080P online video，We have obtained the above power consumption record statistics chart。From this, it can be estimated，Xiaomi 11 Ultra's continuous video playback battery life in this environment，It can reach about 10.9 hours。
This time we are experiencing Xiaomi 11 Ultra，I also received Xiaomi 80W wireless charger and 67W wired charger，Both can support Xiaomi 11 Ultra to achieve 67W wireless、Wired flash charging。
According to actual measurement，67W wired fast charging can make Xiaomi 11 Ultra return from 2% full blood to only 38 minutes；67W wireless fast charging is basically equivalent to it，Let Xiaomi 11 Ultra recover from 1% of full blood to only 40 minutes，It's going hand in hand。
seven、Summarize：The new decade has been pierced by the sky
Xiaomi 11 series is the beginning of Xiaomi as the new decade，Three flagship Xiaomi 11 so far、Mi 11 Pro、Xiaomi 11 Ultra is a hard dish，All the ultimate moves will be given in the first three months of the start of 2021。
Appearance ID，Xiaomi 11 Ultra, which has been waiting for ten years to usher in a "turning point battle", took heavy and ruthless - this is the first time that a huge appearance appeared on a smartphone、Exaggerated lens clusters that are not like CMOS on mobile phones，They are as radically towering as craters on ceramic fuselage，Small window and sub-screen dotted，Together with it, it forms a huge array that occupies 1/3 of the fuselage。
To know，Xiaomi's appearance designs in the past have always lacked such radical pioneers.、Majestic style，Now Xiaomi 11 Ultra offers it，The moment I unboxed, I felt my eyes lit up、Recognition burst。
The "super big bottom" Samsung ISOCELL GN2 sensor exclusively owned by Xiaomi 11 Pro and Xiaomi 11 Ultra is not just a topical，And it has made the imaging capabilities of the two "Job Kings" of Xiaomi 11 series a considerable leap. The 1/1.12-inch giant's photosensitive area is about 60% larger than the IMX689 that has led for a long time.，Become the best mobile sensor area，Like a night vision device under dark light，Combined with dTOF, no burning has been lost from day to night。Samsung GN2 sensor，Not only can you stand out in 2021，Even next year，I believe it's hard to see an opponent。
The main camera sensor used by an ordinary flagship like IMX586 can only act as ultra-wide angle and telephoto on the Xiaomi 11 Ultra，Comprehensive field of view and image quality，Xiaomi 11 Ultra based on IMX586 has already reached the first echelon，And the IMX586 periscopic telephoto image with ultra-high pixel value，Strong analytical power displayed day and night，Almost stronger than all Qualcomm platforms' periscope telephoto models。
In order to plug the ultimate huge GN2 and two other large-sole main-calender IMX586 in the 8.38mm body (one of which is a periscope)、NFC module、Wireless charging module、Snapdragon 888 and its supporting complex heat dissipation structure are simultaneously made，It is also necessary to ensure a huge single-cell battery with 5000 mAh，Xiaomi 11 Ultra uses silicon oxygen negative electrode solution for the first time，Enable battery capacity to increase by 10-20% at the same mass volume。
In other words, an ordinary mobile phone can hold 4000mAh，Using silicon oxygen negative electrode can achieve 4400-4800mAh，This is why the Xiaomi 11 Ultra can plug a 5000mAh battery under the premise that the body space is so limited，Moreover, 67W wired/wireless dual fast charging can make it full of blood in up to 40 minutes.。
Other aspects，Xiaomi 11 Ultra is very detailed，Comprehensively aggregate all the materials you can think of now，Including 120Hz ultra-high refresh rate AMOLED screen that is not limited to four curved surfaces、X-axis linear motor、NFC、Infrared remote control、These obvious details of stereo dual speakers，In terms of performance, only use the Snapdragon 888 platform + full-blood version LPDDR5 + UFS that reaches the limit of the Android camp. 3.1。
As Lei Jun said in his letter to shareholders when he released his full-year financial report for 2020—“All our success comes from respect for users、Belief in user value，and persistence in user interests”。This respect，I think the stacking materials of Xiaomi 11 Ultra are unprecedentedly rare to reflect them all。
Xiaomi 11 Ultra doesn't evoke emotions stories、No joint sentiment、No faith premium，Just stack materials carefully and enthusiastically to make products，And make it clear、Clearly spread in front of users。
all in all，Xiaomi's first decade has become a thing of the past，Xiaomi 11 series announced to us that its King of Ji products will continue to move forward along the established route of telling facts and not telling stories.，And step by step, more and more, replenish the combat power through fierce material piles。As for price，In the author's opinion，5999The Xiaomi 11 Ultra, which starts at RMB 4,999, is more attractive than the Xiaomi 11 Pro, which starts at RMB 4,999.，On this price，The pile machine king that pierces the sky upwards makes people unable to dislike it。