AVNEX Power Bank 20000mAh Fast Charge Type-C With Built-in Cables, Torch Light, LED Digital Display, Portable Charger For Android & iPhone - Black

[Important Capacity Notice]

The Nominal total capacity (20000mAh) of the power bank's internal battery cell is measured at 3.7V.
However, the standard charging voltage for devices like smartphones is 5V. During discharge, a voltage conversion and boost process occurs, which involves inevitable energy loss.

Therefore, the Actual Effective Output Capacity of a power bank is approximately60%-70% of its Nominal Total Capacity.

For a power bank with a nominal capacity of 20,000mAh, its actual available capacity for charging devices is approximately 12,000 to 14,000mAh (specific value varies by

device and usage environment).