Why is the wireless charger charging so slowly?

Wireless chargers are favored by the majority of users for their advantages of being free from the constraints of cables and convenient to use. However, in actual application, some users report that the wireless charging speed is slow, which is somewhat different from wired fast charging. This article will deeply analyze the reasons for the slow charging speed of wireless chargers and explore the corresponding solutions and future development trends.

What factors affect wireless charging speed?

Technical principle limitations

Wireless charging mainly transmits energy through electromagnetic induction or magnetic resonance. Compared with direct contact wired charging, this process naturally has a certain amount of energy loss. The energy conversion efficiency is generally between 70% and 85%. A lower conversion rate means a higher time cost.

Problems with the phone itself

If your phone has some problems, such as battery aging, system lag, etc., it will also affect the charging speed. It is recommended to check the health status of the phone to ensure that the system is running normally and the battery is in good health.

Interference from mobile phone cases

Some phone cases may interfere with the wireless charging signal, causing slower charging. Try removing your phone case, or choose a compatible case for better contact with the charger.

The surface of the charger and the phone is not flat: If the surface of your charger or phone is not flat, such as defects or interference from foreign objects, it will also have a certain impact on the charging speed. It is recommended to clean the surface of the phone and charger before charging and ensure that the surface is flat.

Charging Protocol and Power Output

The current mainstream wireless charging standards such as Qi protocol specify different power levels. The early version of Qi protocol only supports a maximum power output of 5W, while the subsequent version has been increased to 15W or even higher, but not all devices can support high-power wireless charging. If the device and charger are not matched or the charger itself has low power, the charging speed will be slow.

Distance between device and charger

According to the working principle of wireless charging, the distance between the device and the charger has a great impact on the charging efficiency. Ideally, the two need to fit tightly to maximize the energy transfer efficiency, and too large a gap will significantly reduce the charging speed.

Heat dissipation issues

Heat is generated during wireless charging, and a good heat dissipation design helps maintain a high charging efficiency. If the heat dissipation is not good, the device or charger may adopt a frequency reduction strategy due to excessive temperature, reducing the charging power and indirectly extending the charging time.

Additional protection measures

In order to ensure battery life and safety, wireless chargers usually have functions such as over-temperature protection and over-charge protection. Although these protection mechanisms are necessary, they may also affect the charging speed in some cases. For example, when the temperature of the device or charger rises, the system will automatically adjust to slow charging mode.

Solutions to improve wireless charging speed

1. Upgrade your hardware

Choose a high-power charger that complies with the latest wireless charging standards to ensure compatibility with your device and take advantage of its maximum charging rate. Also, invest in a wireless charger with high-performance components and a good heat dissipation system.

2. Optimize equipment placement

Place the device as close to the center of the wireless charger as possible and avoid metal objects between the two to reduce energy loss and improve charging efficiency.

3. Improve heat dissipation

Use a wireless charger and mobile phone case with good heat dissipation performance, or choose an advanced wireless charger with a built-in fan, liquid cooling system, etc. to reduce the temperature during charging and maintain high-power charging.

4. Software optimization and update

Make sure both your device and wireless charger firmware are up to date to take advantage of the latest optimization algorithms provided by the manufacturer for improved charging efficiency and safety.

5. Develop new technologies

Technology companies are constantly exploring and developing new wireless charging technologies, such as dynamic wireless charging and long-distance wireless charging, in order to break through existing technical bottlenecks and further improve wireless charging speeds.

The relatively slow charging speed of wireless chargers is the result of multiple factors, including physical principles, technical standards, equipment compatibility, and heat dissipation management. To improve this situation, consumers can choose suitable high-performance products, use and maintain equipment reasonably, and look forward to continuous innovation in the field of science and technology to break the current limitations. With the rapid development of wireless charging technology, it is believed that in the future, wireless chargers will not only surpass wired charging in convenience, but also make major breakthroughs in charging speed, truly realizing the efficiency and practicality of wireless charging.