Review on Portable battery Xiaomi Mi Power Bank 3 Ultra compact, 10000mAh (BHR4412GL), black by Dorota Busma ᠌

Before testing, I fully charged the battery. The battery capacity on my phone (Pixel 5) is 4000 mAh. That is, the declared 10000 mAh should have been enough for 2.5 full charges. Instead, it turned out like this: charging began when the battery in the phone was discharged to a level of 15% (the battery indicator turned red). The first charge restored this value to 100% (that is, it charged the phone to 85%, which is 3400 mAh). The second time, the battery, having charged the phone from 15% to 88% (that is, increasing the charge by 73%, which is 2920 mAh), was completely discharged. Thus, all that a full charge of this battery gave out was 6320 mAh instead of the declared 10,000 mAh. Alas, even brands like Xiaomi are winding up indicators .