How much energy does a 10000 mAh power bank use?

A 10,000mAh power bank contains roughly the same energy as a smartphone battery with 10,000mAh capacity. However, due to energy conversion losses (about 20-30%), you’ll never get the full rated capacity as usable power for your devices.

Is there a difference between power bank capacity and cell phone capacity?

Most people have logically deduced that there is a difference between the power bank capacity and the actual power transferred to their cell phones. They have also noticed that this capacity is not sufficient to charge their cell phones the number of times they have initially calculated, leaving them disappointed.

How does a power bank battery work?

The voltage is monitored with a voltmeter for a determined number of hours according to the power bank capacity. If the power bank battery lasts for the same number of hours as listed in the capacity, then it is the actual capacity. In reality, this capacity is less due to power losses.

What is a mAh power bank?

1. Capacity The mAh (milliampere-hour) rating represents a power bank’s total energy capacity—think of it like the size of a gas tank. A 10,000mAh power bank contains roughly the same energy as a smartphone battery with 10,000mAh capacity.

How many volts does a power bank battery last?

A current of 1Amp or 1000mA will circulate through it as 5V is the standard USB output. The voltage is monitored with a voltmeter for a determined number of hours according to the power bank capacity. If the power bank battery lasts for the same number of hours as listed in the capacity, then it is the actual capacity.

How many Mah can a 5V power bank supply?

Then the actual capacity calculation is as follows: Actual capacity = 3.7V x 10000mAh x 0.93 / 5V = 6882mAh This result indicates that only 68.82% of the advertised capacity can be supplied to devices. However, it is interesting to notice that if the power bank had an efficiency factor of 0.9, the results would be 0.666; in other words, two-thirds.