please note :
The power bank has two normal capacity standards, one is the battery capacity and the other is the rated capacity. The 10,000 mA power bank, labeled 10,000 mA / 3.7V, has been converted to the rated capacity of 6200 mAh / 5V.
Why is there this difference?
The most important reason is the conversion rate. As most of the power bank battery voltage is 3.7V, and the power bank needs to increase the voltage to 5V when charging the mobile phone, which makes the conversion efficiency of the power bank only 3.75/5=74%, also includes the heat generated when the battery voltage is increased, and various consumption Wiring, electricity and self-consumption. These points add up to 30%-40% of the power of the mobile phone power supply, so the 10000mAh power bank can be used by us only about 6200mAh.
Also, the conversion rate for the entire mobile power industry mainly ranges between 60%-70%.
It is small and suitable for small bags
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