Unmask the "lie" of Xiaomi unveils Note's Gaodianya's battery

Xiaomi also advertised on Weibo that its Xiaomi Note uses 4.4 V batteries, which is 18.92 % larger than the common 3.7 V lithium battery capacity. In fact, this is just battery charging limit/full voltage(that is, the highest voltage, not rated voltage).), At present, there is no such Mars technology. The rated voltage of the Xiaomi Note battery is still 3.83 V. To prevent more people from being sold to Amway, I'm going to hit you in the face again today.

Finally, I couldn't resist writing this article. As a company with "marketing" as its core technology, Xiaomi has a deep understanding of the Chinese people's sensitivity to numerical values and their dedication to high-configuration mobile phones. So once you use the new technology, you will get a grand title, and then Amway gives all the rice flour. Like 304 stainless steel is a textbook example, Lei Jun showed us that faith is so high value. But I'm gon na hit you in the face again today.

The description of the battery on Xiaomi's official microblog is

At present, most common lithium batteries use lithium cobalt(LiCoO2) materials as positive materials for batteries. They are characterized by excellent comprehensive performance of discharge capacity, charging efficiency, and voltage stability, but they are polluting to the environment. Its average operating voltage is 3.7 V. In recent years, it has gradually increased to a level of 3.8 to 3.85 V. For example, the lithium battery on the iPhone 6 has an average voltage of 3.82 V and the corresponding full voltage is 4.35 V. 3.85 V is currently the highest voltage within the safe range, and its full cut-off voltage is about 4.4 V.

We have already mentioned the calculation method of battery capacity. The unit of battery capacity is Wh and the unit of electricity is mAh. It is a flow unit. If you know the average voltage per unit time, Then you can know the battery energy consumed / transmitted during this time.

From the dismantling, it can be known that the lithium battery used by Xiaomi Note is from Sunwoda Electric. Its typical volume/charge is 11.5 Wh / 3000 mAh. The calculation shows that its average operating voltage is about 3.83 V. Then, Xiaomi Note's battery is actually only an ordinary 3.83 V battery. The charging cut-off / battery full voltage is 4.4 V.

Millet Note Dismantling from IT168

Why use 3.83 V batteries as 4.4 V batteries? Here omitted a few words, SWINDLE selling is the mobile phone industry favorite, hehe! The industry generally uses the typical capacity of the battery as the battery capacity. For example, Xiaomi uses 3000 mAh's typical capacity instead of 2900mAh's minium capacity. The hammer uses the minium capacity as the nominal capacity of the cell phone battery. That's probably what happened.

Samsung's website Mall's Galaxy Note4 battery, 3.85 V size(higher than Xiaomi Note), limited charging voltage of 4.4 V, has fallen behind, too

Apple's iPhone 6 battery, 3.82 V, but Apple will only tell you how much W and how many hours

Third-party battery, produced by Yubo, rated voltage 3.85 V, charging limit voltage 4.4 V, also higher than millet Note

Third-party battery, produced by Scud, rated voltage 3.85 V, charging limit voltage 4.4 V, in fact rated 3.85 V limit 4.4 V batteries are not uncommon, nothing to blow

We can calculate that if it is a lithium-ion battery with an average operating voltage of 4.4 V(ignoring its charging cut-off voltage) and has a power of 3,000 mAh, its total capacity of 13.2 Wh is larger than that of 3,000 mAh/3 .7 V. 18.92 %. In fact, without such Mars technology, Miboy can calm down. All day long shouting their own computer users, on the one hand to face with various mobile phone manufacturers, on the one hand to prevent all kinds of Kolmaianli, so the most basic battery common sense should still have it?

The page contains the contents of the machine translation.