Why does the phone's battery drain even if it is not used?

If you fully charge the battery of a tablet or phone and then leave this gadget in a closet drawer for a long time, after a while it may Face a dead battery. But why do we continue to see the device's battery drain when it is left unused? We will discuss this issue further.

All batteries lose their charge over time

Before examining the different types of batteries, we must first understand the most important concept. Let's take a look at this. Simply put, energy doesn't want to stay in one place, it wants to move to reach equilibrium. For example, consider the heating and cooling of your home. In the winter, you need to constantly add heat as your home releases heat energy into the cooler environment. And in the summer you have to constantly remove heat and fight the heat energy outside.

Although today all kinds of gadgets use different batteries and this is considered a normal phenomenon, but the fact is that batteries are considered a miracle of technology to some extent. With batteries, we have succeeded in creating a system for temporary storage of electrical energy in a compressed container that we can use when needed.

But the electrical energy that we store in a cell phone battery, for example, is not unlike a bunch of children. It is not a classroom where they have to sit next to each other in a limited space. These energetic children do not like to stay in a confined environment for long hours and like to run away from class as soon as possible so that they can continue playing. Therefore, we can make the argument that children staying calm and placing them in regular rows is not considered a natural situation for these people.

Electrons that collect in the battery of your phone and other gadgets are like those restless children. who practically set themselves on fire in order to escape from this environment. The natural organization of the chemical compounds in a battery is not in neat, orderly rows, which is why batteries can be so dangerous when they go wrong.

Even when your phone is turned off or for example you have removed the battery from the device, the battery is not dead at the atomic level. The chemical reaction inside the battery that makes the battery work is still active, albeit in a much quieter way than when you're actually using the battery.

This quiet, low-level activity causes the battery to drain, and This process is considered inevitable.

Empty rate of different types of batteries

If you pay attention to the types of existing batteries that you use, you will probably notice the difference in the rate of discharge. You have faced them. Although all batteries lose their charge when not in use due to the laws of physics and limitations, the rate at which they discharge varies significantly. In the following, you can see the discharge speed of some common batteries.

Lithium-ion batteries are widely used in all kinds of gadgets. . For example, we can mention the use of these batteries in smartphones, smart watches, tablets, laptops and a whole range of electronic devices. Also, even electric drones, sports cameras and bluetooth speakers use the same technology to provide energy. Electric cars also use this technology.

Nickel-metal hydride batteries are also rechargeable pen batteries, although their popularity has decreased significantly in recent years. However, these types of batteries are still used for some electric tools, which are generally cheaper than lithium-ion batteries.

Although the speed of emptying these batteries is very high, but a special type of these batteries have been produced that only lose 0.25 to 0.50% of their charge every month. For example, Panasonic Eneloop series batteries use this technology.

Nickel-cadmium is also a very old technology that is used to make rechargeable pen batteries. Although the charge discharge rate of this technology is lower than that of nickel-metal hydride batteries, due to the problem known as memory effect, it needs more attention than lithium-ion and nickel-metal hydride technologies, and that is why it is not widely used today.

Lead-acid batteries are not used in portable devices due to their high weight and the dangers associated with the use of sulfuric acid. Of these types of batteries, mainly for cars, Off-grid power storage and the like are used.

How to slow down battery drain?

As we said, due to the physical limitations of batteries, you cannot completely stop this process. But by keeping the battery cool, you can slow down this process to some extent for all batteries.

So no matter what type of rechargeable battery you use, it is better to keep the battery in a cool environment in different conditions. put. Of course, we're talking about being reasonably cool. This means that you should not put the battery in the freezer because this extreme temperature difference will damage their internal structure. Therefore, after charging the battery of the phone and other gadgets, it is better to put these batteries in the cool part of the house. give If you see that the discharge rate of different batteries is much higher than expected, then it is time to use new batteries. In general, if you are very careful about the condition of the batteries, they will wear out over time, and therefore you have no choice but to replace the battery.

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Source: How To Geek