Have you used a Power bank ? When the mobile phone is out of power, I know how happy it is to carry a Power bank with you. When you are away from home, having a fully charged Power bank at your fingertips will give you a sense of security. Although the Power bank is easy to use, it has a "violent temper". With the advent of the era of a mobile phone, the safety accidents caused by the Power bank and other mobile power sources continue to occur, which is worrying. Is it really good to often use a Power bank to charge a mobile phone? Why is it time-consuming to charge a Power bank? Can fast charging Power banks charge ordinary mobile phones? How should we use the Power bank correctly?
The Power bank is a charging device that integrates power storage, step-down, step-up, and charging management. It functions as a charger and a backup battery. Like mobile phones, most Power banks use 3.7V lithium batteries as batteries. The charging input of the Power bank is 5V DC, and the output is reversed. The average working voltage of the Power bank’s cells is 3.7V, boosted to the output working voltage of 5V and then transmitted to the mobile phone to achieve the charging effect. In this process, as long as the battery voltage is stable, the charging of the mobile phone is stable and will not cause damage to the mobile phone. Therefore, charging a mobile phone with a regular Power bank (except cottage Power banks) will basically not cause direct damage to the mobile phone.
Compared to direct charging, the Power bank takes longer to fully charge the phone. This is because the Power bank uses USB for charging. Compared with the AC power of the charger, the current output is small, so it will basically lose some current. In addition, some Power banks have thinner wires, and the resistance of the wires is too large, which will also cause the charging speed to drop. Another situation is that the battery quality of the Power bank itself is too poor. In order to stabilize the current to control the output, it will also cause the charging time to become longer.
Nowadays, many smart phones have the function of fast charging, and some Power banks that support fast charging have appeared. However, there are many fast charging protocols for mobile phones, and mobile phone chargers of different protocols cannot be used universally. Power banks that support fast charging is also like this. However, non-universal means that mobile phones with different fast charging protocols can only use the mobile power corresponding to the fast charging protocol to have the fast charging effect. But the fast charging Power bank is still suitable for other mobile phones, but it cannot be fast charging.
1. When the charging is completed, the power supply of the Power bank should be cut off in time to prevent overcharging.
2. Exposing the Power bank to high temperatures may deform the internal battery, and placing it in a humid environment may short-circuit the internal battery, so pay attention to the environment when storing and using the Power bank.
3. Heavy pressure, beating and strong vibration will damage the inside of the Power bank, so avoid bumping when using the Power bank.
4. When the Power bank is bulging, stop using the Power bank.
When charging the Power bank, if the temperature of the Power bank is found to be too high, stop charging immediately, and then charge again when the temperature drops to the normal temperature.