When it comes to the smartphone battery, there is no much to say. This probably is the most hated component in our devices, which evolves very slowly if you compare it to the screens or the processors. Recently, a scientific study revealed why and how the rapid chargers prematurely abyss the batteries of our phones.
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The battery capacity cannot increase too much for the moment, except for the price of an extra thickness like in the case of this smartphone with 10,000 mAh battery. Manufacturers are trying to find alternative solutions such as fast charging. Assuming that if a smartphone needs to be recharged every day or two days, the quick charging presents an effective solution to fulfill this task as quickly as possible.
Thus, we end up with smartphones like the Galaxy S6 which is able to recover 50% of its charge in just 30 minutes. But a very serious scientific study explains the adverse effects of this technology. Any lithium battery loses its capacity to store the electrical energy over time and refills. The “Quick Charge” accelerate this process. Here are the tests realized in order to measure these effects:
Several batteries underwent 25 cycles of charge and discharge with rapid charging. We can clearly see that the atoms of manganese and nickel are detached from the crystal structure, forming dark holes in the electrodes as you can see in the image. These zones of 0.1 mm are unrecoverable and thus lead to a premature aging of the battery.
In addition, the temperature rises quickly, which is not good either and damages the battery. This is one of the first tests on the matter carried out using X-rays and the results are far from giving a full view about the long-term effects. Meanwhile, do not use your smartphone while charging, charge only with an official charger or do not wait until the battery dies to start charging.