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How many more mah, better. We have been thinking about the specifications of a phone and, to a large extent, is something true. A greater capacity battery is usually a more capable battery with respect to a smaller. Despite this, there is a somewhat more complex unit of measure, but even more precise, traditionally used in the technical sheet of computers: Los watts-Hora (WHE).
This is the most precise way to determine how long we can use our device, without leaving the capacity to your fate. We are going to explain, without delving too much into technicalities so as not to complicate your life, why we have been imprecisely measuring the battery capacity of our mobiles.
Why do we measure in mah. The commercial standard for the phones battery is the Miliamperio Hora, a very useful measure for small devices with constant voltages. In addition, it is much more striking to indicate closed figures, such as 5,000mAh, than to tell that your mobile has a 19.4 Wh.
However, its two main problems are, in the first place, when there is a voltage variation (you will soon understand why) this measure ceases to make sense.
Although MAH is easy to understand, it does not provide an exact estimate of available energy, which can lead to incorrectly assume how long the battery will last in specific situations of use.
Water measurement time. The watts -hora (WH) are the most precise unit to measure battery capacity, since they reflect the amount of energy available depending on voltage and current. He watt (w) It is the power unit, which indicates how much energy is consumed per unit of time. It is more useful to know how the battery will be used during the daily use of your mobile.
The battery voltage is not constant: it is varying as its percentage of load and useful life changes. A battery, At the end of your useful lifeIt does not provide the same voltage as when it is new. In fact, if you have a modern car or motorcycle, you surely have access to real time voltage and you will see how you change as you use the vehicle. The mobile battery is lowercase compared to these, but also suffers small voltage variations.
The ease of calculation. Even if the voltage was constant, the watts time would be an ideal measure. For example, if your mobile phone had a 5,000mAh battery and a typical voltage (the most common in phones) of about 3.85V, that battery would translate into 19.25 WH (capacity (MAH X Voltage / 1,000).
Knowing the data, it would be enough to know the consumption in watts to deduce almost exactly how much the battery would last. In a concrete situation, as a very demanding game that leads to consume 6W constantly the division would be easy: 19.25 wh/6W = 3.2h. A data that stables: about three hours of screen with the mobile spending all rag
This is why in segments such as computers, where consumption is crucial and marketing (something) less important, WHH is established as a standard to measure battery capacity.
Image | Apple
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