Knowing Original PowerBank Made Easy

POWERBANK is becoming more popular this day, some smartphone owner put this device in their shopping list long with main device.

The restless smartphone drain battery faster than smartphone with normal usage. Using battery that have bigger power(Battery capacity) maybe a good option for restless smartphone users.

TERMinologies

A >>> Ampere or mah

V >>> Voltage

MAH >>> mili Amperes (in thousands)

AH >>>Amperes

INPUT

OUTPUT

Means the electricity current coming inform of DC From Charger To the POWERBANK. say, intakepower of your powerbank.

e.g when you charge your powerbank from 0-100% ""assume DC electricity charge is water Then we can say amount of water drink by your power bank to reach it maximum intake. 1-100%""

Input Varies, according to technology used.

Today We Have:
1A
2A or 2.1A(fast)
3.0A The fastest (QC)

The input 1A, means your charger and powerbank can supply and absorb/save 1000mAh/hour. But, in the process of conversion AC to DC current by charger and transfer of DC to the powerbank the flow losses some current e.g if we carry water from 1 bottle to another(like those play in primary school inter house sport), we probably waste some water.
https://www.quora.com/What-does-2600mAh-mean-when-I-am-buying-a-power-bank-for-my-cellphone
the averager transfer loss is around 25-30%. so means charger with 1A=1000mah would probably supply 0.7A/700mah -0.75A/750mAh per hour into your powerbank. (Note that this is subject to technological composition of the powerbank and charger)

If you have original capacity power bank say 10400mAh(real one,not fake), and the USB power adapter is 1A,the charge time from 0-100% is around 13 hours.why?

Becuase 10400mAh/750mAh=13.86 hours.You can confirm what I say by asking your friend.

Now If Someone say he would sell 12000mAh power bank,with 1A input (charger),but only need 7hours.you can caculate it by yourself like following:
12000mAh/750mAh=16hours.

Real capacity 12000mAh power bank need 16hours charge from 0-100%,but when you test,you find it only need 7hours.this is the fake capactiy.

Anything confuse,keep asking,we will answer everything we know.thanks.

Initially copied
https://www.nairaland.com/1845857/how-know-powerbank-fake-capacity#25621203



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