Your mobile is fighting in the cold – this is how you keep it charged

Your mobile is fighting in the cold – this is how you keep it charged

The screen turns black and you always have to find a charger. Minus degrees make the phone slower and delay the chemical reactions in your battery and risk destroying it.

The cold can reduce the frequency of migrating ions and electrons so much that your smartphone registers the battery as completely dead.

The lightest metal gives you power

Soft, silver-white metal with many unique properties. That's what's hiding inside the battery of your smartphone. With a weight density of just over half that of water, lithium is the world's lightest metal. The element is extremely reactive and is mainly extracted by the salt lakes in Argentina and Bolivia. The metal, moreover, has a high tendency to emit electrons, which is a huge advantage in a battery containing wandering molecules generating current. In addition to batteries, the most common uses are lithium in the form of lithium oxide in refractory materials and glass. But lithium is also used in the treatment of various mental disorders, such as depression.

Researchers have several useful tips on how to best get the sensitive device to handle the coldest months of the year.

One-click to the next song on your song list. It was the only thing required before the light on the mobile phone in front of you disappeared and became lifeless darkness.

And it’s not that strange. The cold makes it harder to keep your mobile charged while you’re out and about.

Your mobile power loses in minus degrees

The reason for the power reduction is the rechargeable lithium-ion battery, which is on your mobile phone and also generates power in everything from the Mars car to drones and electric cars. Most portable devices.

The battery works through chemical reactions, in which lithium ions move from the negative terminal of the battery, the anode, to the positive terminal of the battery, the cathode.

Between the two poles is a special liquid called an electrolyte, which the lithium ions can pass freely to get over to the positive pole.

The lithium electrons, on the other hand, cannot pass through the fluid wall, even though they want to follow along. The electrons’ only way to the positive terminal is through the circuit to which the battery is connected – for example, your smartphone.

And in this way, the movement damages the current.

But minus degrees and colds reduce the chemical reaction and cause both lithium ions and electrons to move more slowly.

In some cases, the cold can reduce the frequency of migrating ions and electrons so much that your smartphone registers the battery as completely dead.

Watch out for the charge

Even if the cold slows down, the chemical reactions do not mean that the battery has damaged.

According to researchers, you should still beware of putting the cold phone on charge immediately, but instead, wait until the phone has an average temperature.

Otherwise, you run the risk of creating so-called lithium crystals inside your battery and eventually shorting it.


Wandering electrons generate current


Cooling slows down reactions

Cooling dampens reactions in the battery

1 Wandering electrons generate current

When you turn on the phone, there is a voltage difference in the battery. In the so-called redox reaction, lithium ions (gray beads) go from the negative pole, the anode, to the plus pole, the cathode. The electrons (blue spheres) would like to follow but cannot move through the liquid, the electrolyte, in the center of the battery. The only way to the cathode is through the circuit battery that is connected to, for example, a telephone, which thereby receives power.

2 Cooling slows down reactions

In cold weather, the cold reduces the number of redox reactions so that less power goes to the phone. In some cases, the power supply may be so small that the phone registers the battery as dead. Even when charging at low temperatures, reactions occur more slowly.

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