Qi2 Testing Guidelines

Requirements:

1) Qi2-certified charger such as:

2) Qi2-certified device and latest version of iOS (iOS 17.2 or later)


Ideal testing condition:

For the ideal testing condition, ensure that your Qi2-certified device is at low battery level – below 20% and ambient room temperature.


Why is it ideal to charge when device is at low battery level?

Charging happens in two phases. In the first phase, a higher voltage increases the charging rate. Fast charging chargers leverage this phase to increase power flow. Once the battery has received most of its charge up to 80% or when the battery temperature increases, the device/phone will decrease voltage to prevent overheating or overcharging, ensuring your phone and charger are both safe.


Why is it ideal for device to be at ambient room temperature?

There are several factors that affect charge rate including heavy usage of device and temperature of device. If the battery is too hot, the device/phone will decrease voltage to prevent overheating, ensuring your smartphone and charger are both safe.