This makes me wonder: why does charging a phone have such a different effect? Is there an optimal charging time node in the battery life cycle of mobile phones that allows us to charge more effectively? Generally speaking, a battery that is almost depleted is like a person trapped in the desert who has almost dehydrated to death. Once exposed to water sources, they will absorb the most water as quickly as possible.

　　Normally, charging a battery when it is almost completely depleted can achieve better charging efficiency, "explained Motorola engineer Mark Carlson.

　　According to Carlson's explanation, the different rates of battery charging are influenced by multiple factors. Overcharging a battery can affect its lifespan, as batteries in electronic devices often have current limitations. This design is designed to allow the battery to support as many charging cycles as possible. You can imagine the current limit of the battery as a car preparing to approach the parking spot. If you can drive at a relatively low speed, the car will be easier to stop in a timely manner. Similarly, not overcharging the phone can also help it charge and discharge normally, rather than going to extremes.

　　However, Carlson also emphasized that the actual charging rate is related to the hardware design and software support of electronic products. In theory, batteries can be charged faster and fully charged when they are about to run out of charge, but this is not always effective.

　　The actual charging effect of any mobile phone is influenced by the current limit of the battery itself, the design of the external charger, and the internal charging control circuit of the phone, "Carlson further explained." Therefore, for the battery itself, it may be faster and more effective to charge when the battery is low, but to achieve this effect, it still needs to be supported by the charging system hardware and software.

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