How many times is the 10000 mAh mobile power charge?

- Jun 01, 2018 -

It takes one kWh to charge the mobile power (10000mAh) 24 times. Algorithm principle:

In a typical mobile phone battery, the charge of the rechargeable battery is in milliampere hours. It is defined as the current generated by a full discharge at a certain discharge time. For example, 1300 mAh means that the battery can discharge at a discharge current of 1300 mAh. Maintain full discharge for 1 hour.

2600mah Power Bank.jpg

The battery is marked with this mark, for example "36V/10Ah".

First of all, in the junior high school physics, we have already talked about the physical quantity of "charge", its unit is "Coulomb" (the charge is also called "electricity", Coulomb referred to as "the library").

When we talk about the definition of current intensity I, we talk about I=Q/t, and we can see that Q=I*t, that is, the quantity of electricity q equals the product of the current intensity I and the power consumption time t. At this time, the unit of I is “ampere A”. The unit of time is seconds, and Amp times seconds is Coulomb.

Using Ah or mAh as the power unit is more convenient to use. For example, a capacity of 10Ah means that when the discharge current is 1A, it can discharge for 10 hours.

The first 36V indicates that the voltage of this battery is 36V, and multiplying this 36V and 10Ah to obtain 360VAh, this VA represents the power unit "Watt W", and h becomes seconds equals 3600s, this 3600s and the preceding 360W phase By taking 1296,000 joules (J), it means that the battery can discharge 1296,000 J of electrical energy when fully discharged.

The specific algorithm is as follows: Once electricity = 3600000 Joules 1mAh = 3.6C3600000/3.6/3.7 = 270270mAh Consider 10% of the loss of the charging process, that is, 90% of the efficiency, that is 240,000 mAh, once electricity can give 10,000 mAh The mobile power is charged 24 times.

Detection principle: simply by measuring the voltage across a particular resistor (in volts or millivolts in mV), dividing the voltage by the value of this resistor (in ohms or milliohms mΩ) gives instant current. (The unit is Ampere A or mA mA).

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