It was recently announced that Apple has reduced the performance of the previous iPhone to maintain battery life. Apple says that if the phone’s lithium-ion battery declines over time, the phone and its processor can not get that much energy. And if you try, especially in cold or lightly polluted climates, the phone will turn off. To avoid this, Apple controls the power that phones can shoot.
No matter what type of phone you have when you are about 2 or 3 years old, you probably have problems with the battery. All this is due to chemical reactions in your phone. The following is a transcript of the video.
Why is it only a year in the life of your phone, does it seem that you can barely hold a charge anymore? If you look into a battery, you will notice several different layers interspersed:
Lithium and metal oxide (cathode)
All these materials form three “sections”. A negative side on which the potential energy is “stored”. A positive section where the “spent” energy is collected. And an electrolytic polymer that lets important ions flow between the two.
A chemical reaction that takes place between sections gives the phone its strength. First, when you turn on the phone, there is a path open where the electrons can move. The electrons at the anode are not happy because they are in a state of high energy. Then they move to the cathode in search of a lower energy state.
The movement of these electrons gives your device energy. But these electrons left their lithium atoms behind. These atoms are now positively charged ions that want to return to their natural and neutral state. Then they pick up their lost electrons and travel through the electrolyte to the cathode.
But when the lonely Ion arrives there, he can not find his lost electron. Then the cathode is separated with an accumulation of positive lithium ions and their electrons.
These ions make up rechargeable lithium-ion batteries. When you apply electricity to the battery, it forces this process of finding electrons upside down. Electrons and ions collect at the anode, ready to release energy again.
This is described as a complete charge cycle. Every time you do this, you are laying the material on the cathode, which means that it can not store as much electrical charge as before. After 400 charging cycles, your battery loses 20% of its charge capacity. This will be done even faster by continuously allowing your battery to reach 0%. For this reason, lithium-ion batteries last about 2 to 3 years. In addition, the battery can be exposed to extreme temperatures due to constant loading of the battery.