There are many questions about cell phone batteries. Should you leave your smartphone connected overnight? Is it bad for the phone? Bad for your safety? What is the right one?
How much should you charge your phone? When is the right time to plug in? Should it go down to 0 percent each time? Up to 100 percent How do you get the longest battery life in a smartphone? Is it really important if you only want to keep your phone for a few years before upgrading?
The debate goes far beyond the fear that a device will only be moderately damaged by "overcharging" a smartphone battery. This concern seems relatively justified as Samsung Galaxy Note 7s went up in flames a few years ago due to battery problems . However, as we have already explained the pocket bag (or nightstand) aspect is unlikely unless a device has serious manufacturing defects, as was the case with this phone. [1
Charging My iPhone Overnight Will Overload The Battery: WRONG
The experts all agree that smartphones are smart enough to let not pass an overload. Additional protective chips ensure that this is not possible on a tablet, smartphone or even a laptop. Once the internal lithium-ion battery has reached 100 percent of its capacity, the charging process is stopped. This usually happens within an hour or two, peaks.
If you leave the smartphone plugged in overnight, it will consume some energy that is constantly pouring new juice into the battery as soon as it drops to 99 percent. This eats the life of your phone (see below).
The best you can do : Do not worry too much. Connect the phone (or put it in the wireless charger) if you want to sleep. If you wake up at some point in the night, unplug or move the plug to prevent it from charging constantly. If you do not wake up much, connect your phone to a Smart Plug that runs on a specific schedule.
Possible problems that could occur overnight when charging:
1) It's hot here The trickle charge can cause a warming. Many experts recommend taking a phone out of the case to charge overnight. Never stack a pile of crap like books or other devices on a charger. And for the love of Jobs, do not put it under your pillow. If you take any of the above steps, you can expect the phone to get hot – not necessarily enough for auto-ignition, but at least enough to damage the battery (see below).
(Spyarm / Trigger))
If you're afraid of fire, some in the UK recommend the charger on a bowl or saucer 19659004] while laying it or laying it on a metal that is more heat could be dissipated, as does a heat sink on the chips in a PC. Using a wireless charger is not an option, so do not sweat it.
2) Bad cable . If you are using a tee cable that is not from the manufacturer or at least "certified" in some way (for example, iPhone Lightning Cable should be MFi Certified ), it could be a problem Problem. The cable and connectors may not meet the specifications required for the phone or tablet. Do not forget to buy Chintzy cables.
I should freeze my phone to avoid battery problems: FALSE
Lithium ion batteries hate two things: extreme cold and extreme heat. Repeated charging of a smartphone during cold periods may result in permanent "plating of metallic lithium" on the battery anode during cold operation, according to BatteryUniversity . You can not fix the problem. If you do it too much, you only kill the battery faster.
(Photo by sankai from iStock)
The battery is not alone in the harsh heat: all the internals of any smartphone dislike heat. It's a computer there, and computers and hot air are deadly enemies dating back decades. Let your black iPhone sit in the sun while you laze around the pool one day, and do not be surprised if it alerts you that it needs to cool off. Do not leave it in the car in summer, preferably in the shade.
Apple specifically states that charging iPhones above 35 ° C / 95 ° F permanently damages the battery. Expect the same with any modern smartphone.
The Best You NEVER Do: Do not let it get too cold or hot when you load it. Do not put your phone in the freezer. That's stupid.
My battery should always drop to 0 percent: FALSE
Running a smartphone until it's dead – a complete discharge – is the way for modern lithium-ion every and not Batteries. Do not even get that close to 0 percent. This will make a lithium-ion battery faster than normal. Partial Discharge is the way to go.
The batteries are borrowed from the get-go time. The interior is in a state of decay that can not be helped. Over time, they will just keep getting less and less power. If you're still using an old iPhone 5 or 6 and wondering why it only has a few hours compared to the nearly full day you were on the day it was new, then that's the reason. The capacity of decreases with time.
The only time you want to unload a smartphone battery to zero is to recalibrate the internal sensor Displays the battery level of your phone. It is hardly guaranteed – in fact – many people do not believe that it works at all – but it is recommended by some, especially if you have a phone that is 10 percent (or even 20 or 30 Percent). and seems to die abruptly.
Even if you use the phone completely for automatic shutdown, it may not mean that the battery is at 0 percent. Leave the phone for a few hours if you think it's worth it. Then perform a reset (hold the Home and Sleep / Wake buttons simultaneously) to get a good reading.
Best Thing To Do : Connect the phone before you are prompted to enter a power-saving mode ; iOS prompts you to activate this when you achieve 20 percent performance. Connect it when the phone is between 30 and 40 percent. In a fast charge phones are fast to 80 percent. Pull the plug at 80 to 90, as the full 100 percent load when using a high voltage charger may stress the battery. Allow the phone to charge between 30 and 80 percent to extend battery life.
Fast charging as with Android phones Finally finally with the iPhone 8 and X. Before It took a few hours for an iPhone to go up 50 percent. Apple claims that the 8 and more can be increased by 50 percent in just 30 minutes with the right chargers. requires a USB-C power adapter which in turn means having a special USB C-to-Lightning cable, none of which comes with an iPhone; or with a higher voltage charger like an iPad or even a MacBook.
My battery is developing a 'memory': FALSE
The development of a "memory" was a problem with older nickel cadmium (19659004) (NiCad) batteries . From there came the whole thing "Discharge the battery completely". As I said, with lithium-ion batteries, this is not necessary.
Why do lithium-ion batteries not last as long as they age? It's not about "memory", it's about capacity . Your phone's battery degrades so much throughout its lifespan that it charges a new phone at the same time, while an older phone only reaches about 82 percent. BatteryUniversity calls it "Old Man Syndrome".
(Jirsak / shutterstock)
Another way to look at this is the newer battery are just more hungry to absorb all this energy ,
Apple claims that "Apple lithium-ion batteries should hold at least 80 percent of their original capacity for a high number of charge cycles," but also admits the amount differs from product to product.
Apple iPhone batteries also support "fast-loading", so they pretty quickly reach 80 percent. After 80, the capacity will increase slowly. Some of these are used to prevent heat accumulation, which prolongs the life of the battery. But guess what? Even for lithium-ion batteries fast charging is not very good. As a result, the corrosion even faster .
Current iPhones are shipped with 5 watts (that's 5 volts at 1.1 amps) charger block that works, but of course you can use a 10 watt charger that has an output voltage of 5V at 2.1A, charge faster. This is the type of charger that comes with an iPad. If you stick to Qi-based wireless charging, keep in mind that most support 7.5W and wireless fast charging is now available. If you charge overnight, do not charge the device quickly. Use a slow charge. That means your charger should have a lower voltage.
Batteries only live for a few years: FALSE-ish
Batteries measure their lifespan in "charging cycles". That is, every time you've discharged 100 percent of the capacity, that's one cycle – but that does not mean you've gone all the way to zero.
For example, if your phone is 80 percent, you're down to 30 percent (that's 50 percent), and you're reloading it to 80, and using that 50 percent again … that is a cycle. You could use 75 percent in one day and 25 percent the next day. that's a cycle. Expect that iPhones have a life expectancy of 400 to 500 charge cycles (again, the phone may not necessarily be connected 400 to 500 times to charge the battery.)
If the phone capacity is exhausted, you may need to do so Do this 50 percent several times a day. That's the time when the lifespan gets even faster. Here is Apple's Graphic which tries to explain it:
While the battery of your phone is out of memory The capacity is getting worse and the limited life means that you want to replace a new battery (or batteries as shown in the picture below).
At the end of 2017, Apple admitted that secretly slowed down the battery life of older iPhones in the name of "overall performance and lifetime extension of … devices." Initially, the slowdown was applied to iPhone 6, iPhone 6s and iPhone SE devices, but also extended to iPhone 7 devices. After a turmoil Apple offered for these phones until the end of 2018 spare batteries for $ 29, compared to the usual $ 79. They have now risen to $ 79, but that's a lot cheaper than a new iPhone.
Battery Replacement is generally best done by a specialist. Few new smartphones have a user-replaceable battery. Those who do so date from years ago, including models from LG (V20, V10 and G5), the Moto G5 and the Samsung Galaxy Note 4 from 2014. The latest with removable battery is probably the Moto E4.
Why so few? Well, most lithium-ion batteries work for about two to three years and the manufacturer wants you to upgrade to a new phone. Or maybe it's because an average smartphone user in the US, according to Kantar WorldPanel keeps a phone for about 22.7 months, so he can always have the latest, coolest gadget handy. Why should you replace the battery easily?
The Takeaway Here : If you plan to exchange phones every few years, charge the stupid thing at will as often as you like and not worry about its diminished capacity. However, if you want to extend things, use the lithium ion battery best practices described above. It can help. Or just take it with you and have a new battery installed every few years.