Will Wireless Fast Charging Reduce Battery Lifespan?

The trend is that everyone can’t get rid of their mobile phones, the battery life of mobile phones has become more and more important, and the emergence of fast charging technology has greatly shortened the charging time of mobile phones.

Get rid of the data cable, how can the mobile phone achieve wireless fast charging? Is it true that the rumored wireless fast charging will reduce battery life?

Principles Of Wireless Charging For Mobile Phones

In market, there are four main types of wireless charging: electromagnetic induction, magnetic field resonance, radio wave, and electric field coupled charging.

Most wireless charging of mobile phones uses the principle of electromagnetic induction. Therefore, let us directly understand its charging principles.

Electromagnetic induction wireless charging: When a magnetic field is generated by the power current of the coil (the feeding coil of the wireless charger), the mobile phone end of the charging coil close to the magnetic field will generate current to realize the mobile phone charging.

At the moment, electromagnetic induction wireless charging has a higher conversion rate than magnetic resonance charging, so it is widely used in the field of wireless charging of mobile phones.

In December 2008, Philips Electronics, Texas Instruments and other major companies joined hands to form the Wireless Charging Coalition (WPC) to jointly develop the wireless charging standard Qi, which is the most widely distributed and most popular wireless charging standard in the world.

With the unified wireless charging standard, as long as it is the Qi protocol, the wireless charging function of products of different manufacturers can be universal.

Factors That Affect Battery Lifespan

First of all, it needs to be clear that wireless fast charging will not reduce battery life. So why do many people think that wireless fast charging will affect battery life? Let’s find out here.

The biggest benefit of wireless charging is to get rid of the shackles of the data cable and charge as you wish. Therefore, some users suspect that frequent charging and power failure will shorten the battery life of the mobile phone.

This idea is wrong, now the mobile phone is using a lithium battery, which has no memory effect (nickel-hydrogen battery has a memory effect), “as used as charged” but more conducive to maintaining the activity of lithium battery, that is, do not use low battery, and do not charge too full.

Apple said that after 500 full charge cycles, the iPhone’s battery can retain up to 80% of its original capacity, and when the battery capacity is less than 80%, power consumption will accelerate and performance will be affected.

What we want to emphasize is a single charge cycle of a phone is the number of times the battery is charged from fully charged to fully depleted, not the number of charges.

What conditions can cause battery loss?

1. Wrong charging habits. Smart phones mainly use lithium batteries, and the lithium ions have a certain degree of activity. If the phone is over-discharged, it will definitely affect the battery life. So, when the phone enters the “low battery mode”, please do not start charging it; at the same time, please do not play large games and other power-consuming, high-calorie operations when the phone is fast charging.

 2. The battery temperature is too high. Lithium batteries are the irreversible damaged by high-temperature. Generally, the normal operating temperature of mobile phones is between 0 and 40°C. If the temperature is too high or too low, it will cause a certain degree of damage to the battery.

3. Substandard charging equipment. Using unqualified chargers and data cables without overvoltage and overcurrent protection will cause unstable charging power and damage the battery cores.