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Stop Charging Your Phone At night: Here’s Why



So your smartphone is effectively an mp3 player, portable gaming console, TV and netbook all in one small package. No wonder it needs a ton of energy to power up. So it’s battery better be good.

What can we do to make it last?

Certainly not charging all night long. It’s a basic thing. You want your phone fully charged in the morning so it’ll last through the entire day away from the comfort of your home. Been there, done that. And even with cutting edge smartphones, I can charge the max capacity in a matter of an hour. There’s no guarantee that you’ll remember to charge it in the morning while you’re in a sleepy day.

Advice to leave your phone unplugged during the night may seem risky and counterintuitive. The worst fear here is that your phone will charge down while you sleep and won’t see the dawn of a new day to wake you up like you’re used to. Frankly, it sounds like a horror story to me. But still, you can’t go against the word of science.

Leaving your smartphone on a charger is bad for it. It’s bad for the batteries lifespan. Most modern devices use lithium based batteries. Even though they’re rechargeable by nature, and made with this process in mind, they’re highly vulnerable that constant interactions with high voltage electricity, like in the outlets of your house.

Just imagine, if you’re leaving your phone on a charger overnight every night for a year, it’ll spend more than three months total in contact with raw electricity. This amount of stress on a battery will inevitably diminish its capacity. You’d be lucky if your smartphone lasted for a little over a year in this case. Thankfully, it’s not all that bad because manufacturers know about this issue and try their best to avoid the damage.

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For example, there are automatic switches on your phone that’ll stop the charging process. The very moment it reaches 100%. It seems like that would solve the whole problem, but it’s not that easy. You see when your phone naturally goes down to 99% the charging will start all over again. Your phone goes from 99 to 100% charged and back many times during just one night. And this too can degrade the battery.

Another thing you might take notice of is your phone charger. I know they seem to be simple, tiny plastic gimmicks to convert energy from an outlet to a USB flood. But if you pay close attention in a tech shop, you’ll notice some of them cost a bit more than others. Good high quality chargers have special chips in them that prevent overcharging, so it’s advisable not to skimp on chargers. This way you won’t spend much more money on a new battery or an entire smartphone too soon.

And what about charging cables. They’re also not just pieces of wire, you know, cheap cables aren’t compatible with features like a quick charge, which is available on most modern devices in some form. But in some cases, it’s worse than that. A poorly manufactured cable could cause a short and then your smartphone would be fried on a whim.

Overall, it’s always advisable to use good quality tech when it comes to something as expensive as smartphones these days. But even all these reinforcements combined can’t completely protect your smartphone and allow you to charge it for as long as you want. These small charges and discharges between 99 and 100% will still occur. And the problem with them is that they’ll heat up your phone. Heat is bad for batteries. That’s why it’s so harmful for your phone. If you leave it in a closed car in the middle of summer, it’ll be all lagging and slow until you cool it down.

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A battery left on the charge may produce heat. But from the inside of the phones body, which is arguably even more destructive in the long term. You can always ease this detrimental process by taking your device out of the phone case when you’re charging it. But that won’t completely solve the problem. There’s also some other advice going around the internet that I’ll have to disprove as myths and nothing more.

For example, you’ve probably heard something about fully depleting the charge of your smartphone and then charging it to the maximum capacity. For the present day, this advice is almost completely obsolete. This is fair for devices from the past decade, because they were using a different kind of battery, which were based on cadmium instead of lithium.

These batteries had a real problem with memory, not that kind of memory. It was more like the amount of charge was memorized by the battery. If it was charged to 30% regularly, it would be easy to get it to that amount, but hard to charge it beyond it. Have you ever gotten so lazy that you can’t even eat? Are you kidding? Well, that’s kind of what was happening to those batteries.

This effect was also called a lazy battery effect. Any modern lithium ion battery won’t get lazy like a cadmium based one So you don’t have to worry about that, as is the case with the notion that the first charge should be a longer one. This is about cadmium batteries too. And based on the same problem I just mentioned. For a long time, there was little to no major breakthrough is in the way we power our devices.

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The power of batteries grew to accommodate our devices, which needed more and more power, but the sizes have decreased, leaving less space to hold the battery. So the advances in engineering new ways to manufacture batteries hasn’t stopped. Scientists and Engineers promise that soon, we’ll have another kind of lithium based battery that will be able to charge in a matter of minutes and last for more than one day.

As you already know, wireless charging is a thing now, but it seems like scientists are ready to push it a step further. One of their new ideas is to make battery chargers that can produce energy from a Wi Fi signal. The very thing that was making expanding charge of our smartphones will also charge them in the future.

And how about charging a phone with a sound? Using piazzolla Electric principles, tiny Nano generators will be able to transform the surrounding sound to electric power. Even your voice will be a good source of energy. Scientists from Japan are in the middle of a decades long study that will allow replacing lithium ion batteries with sodium. The main difference between those elements is that lithium is quite rare and expensive. Well, sodium is literally everywhere. It’s one of the most widespread elements on earth, and batteries like that wouldn’t be only more efficient, but also cheaper.

Another idea is to use literal sand in batteries. Not quite literal though as this battery will use silicon, the main component of the sand. Thin down to Nano silicon structures, this element will be much more efficient in a battery than the graphite that you use now, and now to more expensive stuff.