In this article, we’ll learn what mAh is, how it’s calculated, and why it’s important for every user to know about it when buying a phone, watch, tablet, or other battery-powered electronic device.

## What is mAh?

The term “mAh” simply means milliampere. This is the measure of how much energy is stored in the battery. The higher the mAh, the longer a battery can power your device. The mAh of your battery will affect the runtime and capacity of your device to some extent.

## How is mAh calculated?

There are many factors that can affect a battery’s mAh. The mAh value of a battery will depend on its capacity, the mAh of the device powering it, the temperature of the battery and the ambient temperature.

The formula for calculating the mAh of a battery is as follows: Mh = Ah * 1000/temperature Mh is the mAh of the battery. Ah is the battery capacity expressed in milliamps. Temperature is the temperature of the battery expressed in Celsius.

## How does mAh affect battery life?

High capacity batteries have higher mAh values. However, you can’t just add more mAh to a battery to increase its runtime. You should also consider the capacity of your device. For example, a smartphone battery may have a capacity of 4000 mAh, but because it is powering a small phone, the power will be used up more slowly than if it were powering a portable projector or other larger device.

Your best bet is to choose a battery with a high mAh value and a capacity that is greater than what your phone requires. This will help your device stay powered for longer.

But keep in mind that battery temperature also affects battery life. A hotter battery will drain faster and a cooler one will require more energy to charge. A smartphone battery will become warmer when it is used to charge a device.

When it gets too hot, the battery capacity will decrease significantly. You can reduce battery temperature by keeping your phone in a pocket or bag, placing it on a hard surface, or using a car charger.

## How are mAh different from watt hours?

mAh and Watt-hours (Wh) are two different measurements of battery capacity and charging time. The mAh of a battery gives you an idea of ​​the total amount of electrical current that can be transferred through it.

Watt-hours, on the other hand, indicate how long a battery can power your device. Hours are how long the battery capacity will last.

What is mAh?

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