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What is Qi2 and how does it differ from the previous generation?
Qi2 is the latest wireless charging standard developed by the Wireless Power Consortium (WPC). This is the evolution of the previous Qi standard, which debuted in 2008 and became a commonly used solution in smartphones, tablets and other electronic devices.
History and development of the QI standard
The concept of wireless charging dates back to the end of the 19th century, when Nikola Tesla experimented with wireless energy transmission. However, it was only in 2008 that the introduction of the QI standard by the Wireless Power Consortium (WPC) revolutionized the consumer electronics market. Qi (pronounced as "chee") has become the first universal standard of wireless charging, enabling loading of devices by electromagnetic induction.
The first version of Qi (1.0) offered a charging power of up to 5 W, which was sufficient for the then smartphones. As the technology develops, subsequent versions were introduced, such as Qi 1.1 and Qi 1.2, which increased charging and efficiency. Qi 1.2, introduced in 2015, enabled quick charging with power to 15 W, which significantly accelerated the charging process of mobile devices.
In recent years, the Qi standard has gained popularity and has been adopted by many electronics manufacturers, including Apple, Samsung, LG and Huawei. The introduction of Magsafe technology by Apple in 2020, which uses magnetic alignment for precise positioning of devices on the charger, inspired the further development of the Qi standard.
Availability Qi2 on Android phones
Qi2 is now available on some models of Android smartphones. For example, HMD Skyline is one of the first Qi2 certification devices. Samsung and Google also announced the introduction of compatible devices with QI2 in 2025. In the case of the Galaxy S25 series, it may be necessary to use a special case for magnetic alignment.
Qi2 is a step forward in wireless charging technology, offering more convenience and efficiency. Thanks to the broad compatibility and support from the main producers, we can expect Qi2 to become a standard in the coming years.
Qi2: What's new?
Qi2 introduces several key improvements in relation to its predecessor:
| Magnetic alignment: | Qi2 uses magnetic attachment of induction chargers similar to Apple Magsafe technology. Thanks to this, charging is more effective and stable. |
|---|---|
| Versatility: | Qi2 is to be compatible with a wide range of devices, regardless of the manufacturer, which means that users can use one charger for different devices. |
| Higher charging power: | Qi2 offers charging power up to 15 W, which allows you to charge the devices faster. |
Comparative table of charging parameters
| Parameter | Qi 1.2 | Qi2 |
|---|---|---|
| Charging power | To 15 W | To 15 W |
| Magnetic alignment | NO | Not |
| Compatibility | Limited to devices compatible with Qi | Universal for all devices compatible with QI2 |
| Efficiency | Depends on the precise placement of the device on the charger | High thanks to magnetic alignment |
| Power range | 5 W, 7.5 W, 10 W, 15 W | 5 W, 10 W, 15 W |
| Charging distance | Do 4 mm | Do 5 mm |
| Security | Standard protection against overheating and overvoltage | Advanced security, including detection of foreign objects |
| Cooperation with accessories | Limited | A wide range of accessories, including a magnetic case |
| Energy performance | Mean | High thanks to better alignment and less energy losses |
Comparison Qi2 with Magsafe Apple
Magsafe is a closed wireless charging solution developed by Apple, which was introduced with the iPhone 12 series. Magsafe uses magnetic alignment to ensure a precise and stable connection between the charger and the device. It offers charging power up to 15 W and is only compatible with Apple devices such as iPhones, Airpods and some accessories.
Qi2, in turn, is an open standard of wireless charging developed by Wireless Power Consortium (WPC). Qi2 also uses magnetic alignment, which allows more effective and stable charging. Like Magsafe, Qi2 offers charging power up to 15 W. However, the biggest advantage of QI2 is its versatility - it is compatible with a wide range of devices of different manufacturers, which means that users can use one charger for different devices, regardless of the brand.
In terms of energy efficiency, both systems are comparable because magnetic alignment minimizes energy losses and ensures high charging efficiency. Both systems also offer advanced security, such as detecting foreign facilities, and to prevent overheating and surge.
