In the context of power bank marketing, capacities measured in milliamp-hours (mAh) are often touted prominently, suggesting high energy potential. However, the mAh rating can be deceiving, as it is calculated based on voltage output, which varies in real-world usage. This inconsistency means that a power bank advertised as having 10,000 mAh may provide far less in practice depending on its output voltage. As consumers begin to measure their devices, discrepancies between advertised capacity and actual performance become evident, revealing a need for better metrics in evaluating battery capacity.
The issue with using mAh as a measure of battery capacity is that it reflects a battery's power capacity at a specific voltage output. If you tweak the output voltage, the mAh rating changes.
The lower the voltage, the higher the mAh rating. This is advantageous because the default voltage output for an old-school USB-A port is 5V, and USB-C ports can go to 20V and beyond.
Collection
[
|
...
]