Power Bank 27,000mAh, QC 4.0 USB C 22.5W Fast Charging PD
Power Bank 27,000mAh, QC 4.0 USB C 22.5W Fast Charging PD 20W Portable Charger, Mobile Phone Battery Pack 3 Outputs & 2 Inputs High Capacity Compatible for Smartphones
Note 1:
Charging times ≈ rated capacity of mobile power × 60% ÷ device battery capacity
27000mAh*0.6/3349mAh (iPhone15 battery capacity) ≈ 4.8times
Why is it 60% of the rated capacity of the power supply? This is because about 40% of the capacity is lost due to heat and voltage conversion in the circuit.
Note 2:
When using for the first time, please fully charge the mobile power first, then drain the power, and finally fully charge the power bank before use.
The power bank may have consumed its capacity during the long transportation process, so the power displayed may be higher than the actual power of the power bank. Therefore, you need to fully charge the power bank before using it.