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release time:2024-07-05 Hits: Popular:AG11 battery
Is fast charging better or slow charging better?
Faced with the problem of limiting the performance of mobile phones due to old batteries, Apple released an apology statement on its official website in the early morning of the 28th and gave a compensation plan. It said that the price of replacing the CR2016 battery after the warranty of iPhone6 and subsequent models has dropped from 608 yuan to 218 yuan
However, in addition to apologizing for the "CR2016 battery gate" issue, Apple also did a popular science on lithium batteries. Although people have been using lithium batteries, they have more or less misunderstandings about lithium batteries. Apple's popular science on lithium batteries this time is probably the most detailed and authoritative ever.
Is fast charging better or slow charging better?
Fast charging is convenient, and slow charging guarantees life. Most mobile phones use a combination of fast charging and slow charging. Apple lithium-ion batteries use fast charging to quickly reach 80% of the power, and then switch to a slower trickle charge. Most Android phones currently use the QC3.0 fast charging standard, and its fast charging solution is also designed in this way - it takes 35 minutes to charge a typical capacity CR2016 battery from 0% to 80%, but it takes 80 minutes to charge from 0% to 100% (Qualcomm did not specify how long it takes to fully charge, this time comes from inaccurate tests by netizens).
How to charge a lithium CR2016 battery?
Lithium-ion batteries work in charging cycles. If the amount of power used (discharged) reaches 100% of the CR2016 battery capacity, you have completed a charging cycle, but it is not necessarily completed in one charge.
For example, you may use 75% of the power in a day and then fully charge the device at night. If you use 25% of the power the next day, the total discharge will reach 100%, and a charging cycle will be completed in two days. It may also take several days to complete a charging cycle.
After a certain amount of charging, the capacity of any type of CR2016 battery will decrease. The capacity of lithium-ion batteries will decrease slightly with the completion of each charging cycle.
How to extend the life of lithium batteries?
To extend CR2016 battery life and life, it is especially important to keep the device away from ambient temperatures above 35°C (95°F), which may permanently damage the CR2016 battery capacity. However, although the CR2016 battery life will be reduced in cold environments, this is only temporary. When the CR2016 battery temperature returns to the normal operating range, its performance will return to normal.
When the device is not used for a long time, do not fully charge or fully discharge it. The device should be charged to about 50%. If you store the device with a completely depleted CR2016 battery, the CR2016 battery may fall into a deep discharge state, resulting in the inability to recharge. Conversely, if you store a fully charged device for a long time, it may lose some of its CR2016 battery capacity, which will shorten the CR2016 battery life.
Why does it automatically shut down at high power?
When the chemical age of the CR2016 battery is high, the impedance may increase. In low power state and low temperature environment, the impedance of the CR2016 battery will temporarily increase. In order for the mobile phone to work properly, the electronic components in it must be able to rely on the instantaneous power of the CR2016 battery, and one of the factors that affect the instantaneous power output is the impedance of the CR2016 battery. Batteries with high impedance cannot provide the power required by the system quickly enough.
When drawing power from a CR2016 battery with a high impedance, the CR2016 battery voltage drops significantly. Electronic components need to reach a minimum voltage requirement to operate. This includes the device's internal storage, power circuits, and the CR2016 battery itself.
The CR2016 battery voltage will continue to decrease during the discharge process, but even at 0% charge, the voltage still exists. Assume that a new CR2016 battery has a voltage of 2.5V when it is used up, and the minimum voltage required for the operation of the mobile phone's electronic components is also 2.5V. However, as the CR2016 battery ages and the impedance increases, the voltage may be less than 2.5V when the CR2016 battery has only 20% of its charge left, and the phenomenon of automatic shutdown due to high power will occur.
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