The simplest is to charge for however long and whenever you wish.
It is not necessary to wait until the device reaches 100% before disconnecting it from the power source, nor is it a good idea to let it drain fully before charging (in fact, doing so frequently is a terrible idea).
Without harming the phone, you can disconnect when it hits 80% or any other value and charge when it is at 40%.
It’s also not necessary—in fact, you shouldn’t—to turn it off in order to charge it.
Additionally, if you’d like, you can use it with the plug still in.
But charging the phone overnight, each and every night, is the best practice.
iOS devices running iOS 13 and later can now choose for Optimized Charging.
The phone will use mains power during the nighttime stop rather than battery power, enabling the battery to "rest" and decreasing the frequency of battery charging. In the long run, this will increase the battery’s usable life.
When you are ready to use your phone, it will automatically restart charging until it reaches 100%; it will "learn" how you use it.
With a compatible cable and high-quality USB-A or USB-C power source, you may charge an iPhone, iPad, or iPod Touch.
Let’s see if charging an iPhone at 50% is OK.
In order to minimize battery aging, internal hardware and software mechanisms are designed to control battery temperature and charging schedules.
Over time, your battery lifespan is preserved via Optimized Charge Limit and Optimized Battery Charging, which adjust to your regular usage.
It might automatically postpone charging to 100% until right before you need to use the battery, depending on how often you charge it.
When the battery temperature drops below its typical operating range, charging may stop for a short while. It will then start again.
One can irreparably destroy a battery even by keeping it in a hot environment.
You can experience a brief drop in battery life when using your smartphone in extremely cold temperatures.
The temperature of the surrounding air and the battery’s percentage of charge when the device is powered down for storage are two important variables that will impact the overall health of your battery if you wish to store it for an extended period of time.
Now let’s test if charging your phone at 50% is OK.
The lithium-ion battery included in the majority of smartphones lasts longer when charged often.
Lithium-ion batteries function best when kept above a 50% charge, in contrast to the nickel batteries used in previous phones.
Relentlessly letting the battery run completely flat could reduce both its lifespan and total capacity.
If this occurs, the battery may not last more than a few hours before needing to be charged, for example, and you will have to charge it more regularly.
Whatever you do, your phone uses up a lot of battery life. However, you can reduce this usage by changing the settings on the device.
The auto-brightness feature on the majority of smartphones automatically modifies the brightness of the display according to the ambient lighting.
To save a significant amount of battery life, if you often have the display set to full brightness, turn on the auto option.
Next, we’ll discover whether our battery can be charged to 50%.
Frequently charging your battery won’t damage it.
Keep the battery from frequently dropping below 20%.
It is not as healthy to charge to 100% as it is to charge to about 80%.
The battery is under higher stress the closer its level is to both 0% and 100%.
There is a healthy charging range of 20% to 80%.
Lithium-ion batteries benefit from frequent charging.
Reduce how often you leave your battery at 100%.