Why does the power of Apple's mobile phone suddenly jump from 100% to 1% in cold weather?

When the iphone is used for a long time, the battery life will decrease, especially in winter. My iphone6p has been used for about three years. Once it enters winter, especially outdoors, it is particularly easy to lose power, and the power consumption drops from 100% to 60%, and from 50% to 10% or even power failure, and it is very frequent.

When the temperature drops, the environment will be in a low temperature environment, and the lithium ion activity in the battery will decrease. Due to the low temperature, the internal resistance of lithium battery will increase, so the lithium ion activity will decrease, and the durability of battery will gradually decrease due to the heat generated by resistance. The best normal use temperature of mobile phone is between 0 and 35 degrees Celsius.

This situation is actually that the battery of the iphone is aging and its life is approaching. Of course, it is also possible that there is something wrong with the power control chip, but this situation is rare. The first thing to know is that the current mobile phones, including the iphone, all use lithium batteries, and one of the characteristics of lithium batteries is that they are not frost-resistant. The principle of lithium battery is that the migration of lithium ions in electrolyte provides electric energy. After the cold weather, the liquid gradually solidifies at low temperature, so the battery that enters the aging period will run slowly.

If the battery aging problem of iPhone is ruled out, it may also be the problem of power control chip, but if it only appears in winter, it may be a scientific problem. At present, most of our mobile phones use lithium batteries. One of the characteristics of lithium batteries is that they are not cold-resistant. The principle of lithium battery is that lithium ions migrate in electrolyte to provide electric energy. However, if the temperature is too low, the activity of lithium electrons will decrease and there will be a trend of solidification. At this time, lithium electrons can't run, so they can't drive electric energy transmission.

However, many people are puzzled. Since all mobile phones use lithium batteries, why is Apple's iphone particularly prone to power failure and power jump in winter? This is mainly because the temperature control setting of Apple's mobile phone is strict. Most mobile phones have temperature control chips to detect the ambient temperature. In order to ensure the safety of your mobile phone, the temperature control chip of iphone will automatically adjust the state of your mobile phone, but this limit is conservatively set by Apple, such as 0-35 degrees. Once the north enters the cold weather of about 0 degrees, it is easy to cause the power to drop rapidly, but the advantage of Apple setting is that the battery is not easy to expand and leak when the temperature is high in summer.

Since your iphone has a serious battery jump, the best and most direct way is to replace it with a new battery, usually at most 100 yuan. After replacing a new battery, there is generally no major power outage, unless it is in an extremely bad temperature environment.