Now let's discuss a quite frequently asked question. Is it safe to charge a smartphone with a more powerful charger than advertised by its manufacturer? What happens to your phone when you charge it with a more powerful charger than necessary? The answer is really simple.
Phones know how much charging power they need
In short, you don't have to worry about anything. Yours Xiaomi the smartphone will not burn or be in any danger. The vast majority of charging adapters have internal monitoring system, which regulates the output electrical quantities.
It can be said that your device communicates with the charging adapter itself and only requires a certain amount of charging power. You don't have to worry about overvoltage, high current, short circuit or overheating of your smartphone.
It is possible that the battery will wear out a little faster in the long run in this way, since the original adapter probably has charging algorithms that are designed exactly for your phone. In principle, however nothing will burn and it will definitely not explode. However, long-term charging using a non-original, more powerful adapter is probably better for you not recommended.
Use only adapters from quality manufacturers
More powerful charger directly from Xiaomi however, intended for another mobile phone should be a suitable alternative. So if you own an adapter from another brand, be careful if it's a verified and trusted manufacturer. A dangerous charger may not only endanger your smartphone, but also you directly. You should also pay attention to the charging methods.
When possible, don't drain your phone's battery completely to zero, and if you manage to disconnect the device before it's fully charged, you're doing something for a better long-term life. Also, allow it to be ventilated during charging to avoid unnecessary overheating, which definitely does not do the best for the internal components.
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What are the "charging algorithms" in adapters? Any sources for this claim? It sounds like fiction to me.
Fast charging is set using standard protocols such as QuickCharge, USB Power Delivery, etc... If the mobile phone does not support any of the protocols offered by the charger, it will charge in a standard slow way.
The charging algorithm is in the mobile, which is adapted to the given mobile, and it requests what it needs from the charger. The charger does not have the ability to sense the temperature of the battery, nor to know how the mobile is loaded and able to cool down, so that the battery is not destroyed by fast charging.
It only depends on the quality of the charger, whether it is able to deliver a stable output without any interference to the mobile phone. Which probably cheaper alternatives can usually do. The question is, rather, how the chargers are made safely, that when a fault occurs, there will not be an overvoltage at the output, or that it will comply with the requirements from the mobile for fast charging and not fit a higher output voltage than the mobile requested. Basically, it's just a matter of how well the charger can listen to the demands of the mobile phone.