Tuesday, 20 February 2018

What is mAh? mAh full form? And Real battery life of a smartphone and power bank

There are a number of mobile phone companies in the world right now that simply means a very tough competition. In order to beat the competition or to stay in the competition all are bringing a lot of features in their smartphones that we never think of about. All big companies target a few features to improve and all have succeeded in that pretty well. Every single company try to bring new feature in their smartphone that other company doesn't even think about. Camera in smartphones evolved a lot. This is just the result of the competition out there in the market. We all think and check the feature of the smartphone before buying in. The very basic feature is the battery life of the smartphone that we all measure in mAh. We all compare the battery life of one phone to others in the market. If you have a smartphone of battery of 5,000 mAh and your friend's got a smartphone with 3,000 mAh than you think that you got better battery backup than your friend. But is it really true? What is the real meaning of mAh? If you got a power bank of 10,000 mAh then what is it's real capacity? Well in this blog I will answer all your questions about the battery of a smartphone and the game companies played through power bank.

Well the very thing is what is mAh? mAh stands for milli ampere hour. This basically means how many milli ampere of current your battery can supply to your phone in one hour. Lets take an example, if you have a smartphone with a battery of 4,000 mAh, it means that your battery can supply 4,000 milli ampere or 4 ampere of current to your smartphones circuit in one hour. The battery life of a smartphone completely depends on the circuit of the smartphone. Lets take another example, If your smartphone comes with a battery of 4,000 milli ampere hour and it has a circuit that draws only 1,000 milli ampere than the battery life of your smartphone in this case will be 4 hours, but if the smartphone circuit is bigger and draws 2,000 milli ampere then the battery life of the smartphone will reduce and become 2 hours only. So the battery life depends not only the mAh value of the battery. It also depends on the circuit of the smartphone. Well this is just an example and this is not exactly what happens in real. There are different types of discharge curves that determine the capacities of the battery which depends on the current that your smartphone draws from it. For example if you have a battery of 3,000 mAh and you draw just 300 milli ampere from the battery, then the battery life will be 10 hours. If you draw 1,000 milli ampere then battery life will become 2.30 hours which means that the capacity will become only 2,500 mAh instead of 3,000 mAh and if you draw 2,000 mAh from the battery then the battery life will be only of one hour and the capacity further reduces to only 2,000 mAh. Therefore, these different discharge curves tells the quantity ideal output current and if the ideal output current changes then the discharge rate of your battery will also change and the battery life will also vary.

There many other factors which decide the battery life of a smartphone. This includes the type of work you do on your smartphone. For example, if your smartphone has a battery of 3,000 mAh and it discharge completely after 10 hours then it means you are drawing 300 milli ampere of current from it every hour, so your battery life is of 10 hours. But this will vary every time and the deciding factor will be the type of work you do on your smartphone. If you do light work then the battery consumption will be less and if you do heavy work then the battery consumption be very high. For example if you play a lot of heavy games or you try to connect internet in a remote area then then the battery life of your smartphone will drop a lot instantly which results in heating of phone and if you don't do any heavy work your phone then the same battery will give a battery battery life to your smartphone. In short we can say that on doing heavy work the capacity of the battery decreases. The ideal units to calculate the capacity of the batteries is Watt hour. This also includes a very important factor that is the voltage of the battery which also decide the battery life of a smartphone. For example, if you have a battery of 2,000 mAh and 1.2 volts, then to calcite it in watt hour just multiply the figures and you get the answer that is 2 watt hours. Now think you take a battery of same mAh that is 2,000 mAh but this time of 9 volts then the capacity will become 18 watt power this time which is way better than the earlier one of 1.2 volts.

Now, lets talk about power bank. All people become fool by buying a power bank by just seeing the numbers before mAh. Let me ask you a question, if you buy a power bank with a capacity of 10,000 mAh and your smartphone's battery is of 5,000 mAh, then can you charge your smartphone with the power bank twice? The answer is no. The reason behind is that the 10,000 mAh, or other figures, comes in power bank are at around 3.7 volts and the USB standard works at 5 volts. So to charge your smart phone the volts of power bank have to be increase until it becomes 5 volts. This conversion decrease the capacity of the power bank atleast by 25%, so the power bank of 10,000 mAh will now become nearly of about 7,5000 mAh. So this is how the companies play a game and make people fool by just showing them half the information. Be aware before buying a power bank and don't just see the mAh figures. There are also many Chinese phones in the market which comes up with smartphones with battery of 6,000 mAh to 10,000 mAh, but the cells in the battery they use are of very weak quality and thus the discharging rate of your battery will definitely become very poor by itself.
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