So at what percentage should you charge your phone? The best practice for preserving phone battery health is to plug it in at around 20% and charge it up to 80-90%. This is especially important if you use fast charging, as charging from 0% will cause a lot of heat, and from 80% up, fast charging becomes less efficient.
1) Don't charge until you're down to 20 percent
So here's a handy rule: Don't start charging until your battery reaches about 20 percent — and try to stop when you get to about 80 percent. This will make sure you maximize each cycle while keeping the battery free of stress.
Android phone manufacturers, including Samsung, say the same. “Do not leave your phone connected to the charger for long periods of time or overnight." Huawei says, "Keeping your battery level as close to the middle (30% to 70%) as possible can effectively prolong the battery life."
You may have heard that it's better for your phone's battery to run it all the way down to 0 percent and then charge it up to 100 percent, but the opposite is actually true. For lithium-ion batteries in smartphones, it's better to keep the power levels in the middle, ranging from 30 percent to 70 percent or 80 percent.
Apple recommends, as do many others, that you try to keep an iPhone battery between 30 and 80 percent charged. Topping up to 100 percent isn't optimal, although it won't necessarily damage your battery, but letting it regularly run down to 0 percent can prematurely lead to a battery's demise.
Without getting into the details, the key thing to note is that your battery will degrade faster and lose capacity if you consistently charge past 90%. That's why charging to between 80-90% is recommended. While it's harmful to consistently charge to 100%, it's completely fine to do on occasion.
Most of the time you should only charge an EV to 80% because charging rates slow down dramatically past the 80% mark. And two, the long-term health of your vehicle's battery pack is improved when kept below 100%.
This will reduce battery stability in the long term. SImply avoid charging overnight and instead charge your phone twice a day, once in the morning and once in the evening. This will keep a healthy battery charge lifecycle and hence keep the battery healthy.
The bottom line is that switching your cell phone off at night does many things at once: reduces your radiation exposure. adds to your phone's battery life. reduces energy consumption.
There may not be a noticeable change straight away but if you do this every single night, you may see your battery degrade over time. Therefore, charging your phone overnight isn't necessarily bad but you should not do it consistently if you want to get the best out of your battery.
The most common myth about overnight charging is that it can overload your battery. This is simply not true. All smartphones are designed with protective measures that prevent the battery from overcharging once it's full. As soon as the battery reaches 100%, it stops charging.
Using your phone a lot while it's charging can also cause the lithium ion battery to degrade faster than it would otherwise. That's because both using your phone and charging your phone causes the battery to heat up. When you do both at the same time, it heats up the battery and puts a lot of stress on it.
Unplug at battery level between 80% (or lower) and 100%. Don't let your phone stay at 100% level for too long, i.e., plugging to charger after fully charged.
Avoid full charge cycles (0-100%) and overnight charging. Instead, top up your phone more regularly with partial charges. Ending a charge at 80-90% is better for the battery than topping up to completely full. Use fast charging technologies sparingly and when your device is cool.
Is it bad to charge my phone to 100 percent? For optimized battery life, your phone should never go below 20 percent or never above 80 percent. It may put your mind at ease when your smartphone's battery reads 100 percent charge, but it's actually not ideal for the battery.
Yes, if you have the option to limit you battery charge limit to 80% and you do use your laptop plugged in most of the time then that setting will prolong the lifespan of your battery.
To extend the lifespan of your battery, if the battery gets too warm, software might limit charging above 80 percent. Your iPhone will charge again when the temperature drops. Try moving your iPhone and charger to a cooler location.
Research has shown that Tesla owners have permanently damaged their Tesla batteries due to frequent supercharging. Although keep in mind, some user data actually points to daily supercharging actually prolonging battery life.
Tesla doesn't state a specific battery percentage that's better than another. However, Tesla's charging recommendation is that you stay within the car's daily specified range bracket (generally no lower than 20% and no higher than 90%) and only charge 100% when needed for long road trips.
Charging at a non-Tesla DC fast-charging station leads to damage to battery cells, that is why Tesla will throttle your supercharging rate. When using a Tesla Supercharger, the Tesla network has a built-in battery charging protection algorithm to work together with the Tesla battery.
Stop Charging to 100 Percent Every Time
As a good practice, you should avoid charging your iPhone to 100% all the time and not let it go below 25%. Ideally, keep the battery percent somewhere between 30% and 80% to maintain your iPhone's battery health.
Maintain good battery health
It is always recommended by experts to start charging your iPhone when it hits 25 percent. Similarly, only charging the battery up to 85 percent will help the iPhone's battery to maintain good battery health and deliver extended battery life.