How do you understand the mAH mA and mWH mWh of a battery?

Both are not very common units, and strictly speaking, milliwatt-hours are more accurate.

Milliampere-hour is a measure of the capacity of a specific device, because the unit is smaller, it is usually used to measure small-capacity devices such as mobile phone batteries, because the voltage is , so the higher the value, the greater the capacity. It means that it can work for x hours with xx milliamps, for example, a 1000mAh mobile phone battery can work at 100 milliamps for 10 hours and 50 milliamps for 2 hours.

Milliwatt-hour is a unit used when the operating voltage is different, (e.g. the power conversion rate is calculated as 100%), 1000MWh is a unit that can operate for 10 hours at 100 MW and 20 hours for a 50 MW device at the rated voltage.

So compared to it, if the lithium battery with milliampere-hour capacity is 100 milliampere, can it still work for 10 hours? Obviously not, p=ui, through the use of the device after the boost, the working current of the device, that is, the device with 100 mA working current is powered by a battery, and it can only be used for 5 hours!

mA hours * operating voltage = mW hours.

For example, a 1000mAh lithium battery has a capacity of 1000*

Using milliwatt-hours (watt-hours) is a more accurate measure for devices with different voltages.

This also conveniently explains why the capacity of the 18650 lithium battery, which is claimed to be high-capacity, is only 3000mAh (some say that there are 4000), while the small No. 5 nickel-metal hydride battery has 2500mAh.

It makes no difference. It's just that the capacity is indicated differently.

Milliampere-hour is the current capacity. That is, the discharge time supported by a certain current.

Milliwatt-hours is the power capacity, which is the discharge time supported by a certain amount of power.

The two can be easily converted. Milliwatt-hours = voltage x milliampere-hours.

When comparing battery capacities at different voltages, the watt-hour metering method is more appropriate. For example, a laptop battery of 4000 mAh is obviously a lot larger than a mobile phone's 4000 mAh.

The unit of measurement of a milliampere-hour battery is the amount of electricity that lasts for an hour, and milliwatt-hour refers to how much power can be supplied in an hour.

There is a difference, the battery mAh and mAh are not the same concept. A battery milliampere is a unit of current, and a mah is a unit of capacitance. For example:

If the capacity of a battery is 1000mAh, it means that if it is discharged with a current of 1000mAh, it can be used for 1 hour.

Mah is not a unit of energy, it needs to be multiplied by the current voltage to be the real energy. Generally, the battery is 1S single cell, and it is feasible to use mAh to compare the capacity when the standard voltage is the same. However, in the case of electric models, motorcycles, etc., multiple battery cells are connected in series and the appearance is packaged into a single battery, and it is not possible to accurately compare the capacity by looking at the mAh.

MAH Simple Application:

1. Capacity percentage (in units):

Each battery has an initial capacity or is known as a rated capacity. Divide the current battery capacity by the rated capacity to get the current battery capacity percentage.

A battery with a rated capacity of 600mAh, if the current battery capacity is only 456mAh, the phone will show 456 600 = 76%.

The mobile phone itself will have a built-in calculation formula according to its own standby or call current consumption, and see this capacity converted into standby time and talk time that the user can understand.

3. The formula for calculating the standby time is:

The current capacity of the battery, the current currently flowing through, and the standby time.

4. The formula for calculating the talk time is:

The current capacity of the battery, the average current during a call, and the duration of the call.

The standard unit of capacity of a battery is AH, 1000mAh = 1AH. The implication is that when a discharge is performed at the standard current indicated, the time from full charge to the time when the battery is used up is 1 hour. For example, when an 800mAh battery is discharged at a current of 800mA, the use time from 100% to 0% of the power is 1 hour.

The capacity of the battery divided by the current used is the battery life. The higher this number, the larger the capacity of the battery, the more electricity it can store, and the longer the battery will last. Note that in normal use, we cannot use up to 0% of the battery, and generally can only discharge up to 70% of the battery capacity.

Therefore, the actual life of the battery is less than the nominal capacity time.

wh=mah v(voltage e68a8462616964757a686964616f31333431363539) 1000;

A milliampere-hour is a unit of electricity. 1 mA-h = coulomb;

When the current intensity is measured in milliamperes (mA) and time is measured in hours (h), the two of them are multiplied by milliampere-hours (mAh), of course, it is still electricity, since 1a = 1000mA and 1h = 3600s, so 1ah = 3600 coulombs.

You also need to know the voltage of "mAh", if it is u, then the relationship between the two: wh u 1000 = mah

A 4800mAh lithium-ion battery is converted to "Wh" at different voltages.

By calculating we can get the following equation:

1va= , 1vah= , you can do the math to find out.

Conversion formula: wh=v*ah.

Wh: Watt-hour is a unit of energy measurement that represents the amount of energy consumed by an appliance with one watt of power after one hour of use.

mah: milliampere-hour, is a small unit of the main ampere-hour (ah). 1ah=1000mah。

The value of watt-hour is calculated by multiplying the nominal voltage (V) of the battery by the nominal capacity (Ah), i.e. wh=V*Ah (the nominal voltage and nominal capacity are usually marked on the battery).

From the formula, it can be concluded that the capacity of 100Wh power bank is 100, 27AH=27000mAh

mAh is the unit of battery capacity, and its size directly reflects the battery's ability to store electricity. Standard.

Answer: A battery with sufficient electricity, when discharged at a certain current (generally the working current), when the discharge termination voltage is reached, the output of the ground power. Formula: Discharge Current (ma, a) Discharge time (hours) = mAh, ah It is worth noting!!

For example: 1300mAh is not simply equal to discharging with a current of 1300mA for one hour, here mainly mentions a discharge current (generally a working current), the smaller the discharge current, the longer the discharge time, the larger the discharge current, the shorter the discharge time, but it is definitely not a proportional relationship, a 1300mAh battery can be discharged for 100 hours if discharged with a current of 13mA, but if it is discharged with a current of 1300mA, it is more than ten minutes. In addition, the capacity of the battery is directly related to the temperature of the environment and how old or new it is.

mAh mAh The power of the rechargeable battery is milliampere-hour, which is defined as the current generated by complete discharge at a certain discharge time. For example, 1300 mAh means that the battery is fully discharged in 1 hour with a current of 1300 mAh.

amount of charge, mA-h; Milliamperes (ma) is a unit of current, and hour (h) is a unit of time; i×t=c

Capacity = Current Charging Time.

Generally speaking, the larger the milliampere (mAh) of the battery, the longer the use (standby) time, the standby time of the mobile phone is proportional to the power capacity of the battery, and the general mobile phone battery voltage is determined 3 7V, so it can also be said that the larger the number of milliamps, the longer the standby time.

However, the standby time does not depend entirely on the capacity of the phone's battery, and the programs running in the background are also the killers of the standby time.

Some programs should be limited in terms of boot conditions, otherwise these programs will start in the background, and the battery will be quickly drained, and the standby time will be seriously shortened.

Mah is the unit of capacitance and milliampere is the unit of current, and the two cannot be converted. mAh is the unit of measurement of the capacity of the battery, which is the total number of electrons in the battery that can be released for external use, and milliampere is the unit of measurement of current, which is represented by the letter MA.

1 amp = 1000 mA, 1 mA = 1000 μA, 1 mA = A, 1 A = 1000 mA = 1000000 mA.

The milliampere is the unit of measurement of electric current, and the ampere is the international unified unit of current, and the current refers to the flow of a group of Zen charges.

mAh is applied to the percentage of capacity, standby time, and talk time, and the mAh needs to be multiplied by the current voltage to be the true amount of energy.

Operating environment

Brand model: general

System version: General