In today’s technological world, where smart devices are almost the most important part of our lives, power banks are the mobile accessories that we always carry with us and that support us the most in mobile environments. But there is confusion between the capacity written on the packaging of power banks and the rates in practice.
For example, if you have a smartphone with a capacity of 5,000 mAh and a portable battery with a capacity of 20,000 mAh, you would expect this battery to charge your smartphone 4 times, but it does not happen. Because the terminology in electronic products is much more complex than we think. As such, power banks can only transfer 2/3 of the capacity used during marketing to your devices. Okay but why?
How to measure the actual capacity of powerbank?
As smartphones and other electronic devices have become the most important tools in our lives, the high performance and charging times of these devices are also on our agenda. Considering that one of the most important topics that technology companies work on is the charging times of computers and phones; Fast charging cables, high-capacity power banks and GaN adapters are naturally the most demanded mobile accessories.
We have high expectations from these devices that keep us in communication and connected to life at all times. For example, we expect the fast charging adapter and cable to charge our phone in a shorter time every day. Or if we have a smartphone with a capacity of 5,000 mAh and a portable battery with a capacity of 20,000 mAh, we expect this battery to charge our smartphone 4 times. But the problem is that a powerbank you purchase can only transfer two-thirds of its capacity used during its marketing to your devices. Okay but why?
Saying that this is a bit too technical and complex explanation, Mcdodo Türkiye Chairman of the Board of Directors Mehmet Uçurum said:Because the terminology in electronic products is much more complex than we think. But we can explain this difference between the capacity of power banks and their performance in practice in the simplest way in 2 items:” says.
For example, if your portable battery has a capacity of 20,000 mAh, multiplying this by 3.7 shows that the total energy measured in mWh is 74,000 mWh. However, a smartphone charges at 5 Volts, and dividing 74,000 mWh by 5 – to convert back to mAh – shows that you have a battery with a capacity of 14,800 mAh to charge your smartphone.
On the other hand, we need to take into account that a portable battery with a capacity of 20,000 mAh cannot practically provide even a 14,800 mAh charge.
There are various factors that reduce efficiency throughout the entire charging process. For example, electrical resistance in the cable can reduce the total amount of energy transferred to your smartphone. Likewise, during the charging process, a certain part of the energy turns into heat. Beyond these, factors such as ambient temperature also have a significant impact on efficiency.
In other words, we can say that 10 percent of the total transferable energy of your portable battery falls victim to inefficiency. When we remove ten percent of the total transferable energy of 14,800 mAh from a portable battery with a capacity of 20,000 mAh, we can say that we are left with an energy capacity of 13,320 mAh.
As a result, we look at; A portable battery with a capacity of 20,000 mAh will not charge a smartphone with a capacity of 5,000 mAh 4 times. Instead, based on the usable energy you obtain, we conclude that it can charge 2.66 times.
As we did above, we can find the net energy that can be transferred to the device by multiplying the declared capacity of the portable battery by 3.7 and then dividing by 5. If we then trim 10 percent of this value, only then can we reach the real amount of energy you have.
Source link: https://shiftdelete.net/powerbank-ureticileri-bizi-kandiriyor-mu