Is the 40 80 battery rule real?

This rule discourages charging your battery fully to 100%, and you should not let it run dry to zero percent before you recharge it. Lithium batteries mainly used on laptops work best between 40 percent to 80 percent.

Is the 40 80 battery rule real iPhone?

The Solution: The 40-80 Rule

The rule is straight forward: try not to let your phone deplete too much (less than 40%), which can damage the battery, and try not to keep your phone charged entirely (more than 80%) all the time.

Should I keep my battery between 40 and 80?

To keep your gadgets humming for many years to come, stop charging them from zero to 100 percent, says Cadex Electronics, which designs power-monitoring systems. Instead, keep the battery meter between 40 percent and 80 percent. Research shows that living to the extremes can wear out lithium batteries.

Is it okay to charge your phone at 40?

If you are going to put the phone away for a long time, first charge it to somewhere between 40-80% and then turn off the phone. You'll find the battery will drain between 5% and 10% each month, and if you let it discharge completely it might become incapable of holding a charge at all.

Should I limit battery charging to 80 capacity?

80% allows you to use the laptop on battery with most of its capacity, while avoiding the really damaging 90-100% charged state. 50% is closer to the optimal amount of energy to store in the battery to extend its life, and is what you should use if you are just on AC power almost all of the time.

iPhone Battery — The 40-80% Lie

Is limiting battery to 85 good?

Hamilton says that you should only be partially charging your phone to slow down the depletion of your batteries life cycle. She says the sweet spot to keep your battery charged is at 25-85 percent. “Lithium-ion batteries can be stressed at the extremes.

Is it better to charge your phone to 85 %?

The fact is that the first 15% (100% -> 85%) discharges relatively quickly anyway, which is a deliberate measure to look after the battery. So if you are just charging your phone once or twice per day and unplugging in within a few hours of it reaching 100%, the 85% feature is unlikely to have much benefit for you.

Should I only charge my phone to 80?

Don't charge to 100 percent

A good rule of thumb seems to be to never charge your phone up to more than 80 percent of capacity. Some research shows that after 80 percent, your charger must hold your battery at a constant high voltage to get to 100 percent, and this constant voltage does the most damage.

Should I charge my phone at 50%?

Most Smartphones have a lithium-ion battery that lives longer when charged regularly. Unlike the nickel batteries used in older phones, lithium-ion batteries do best when kept above a 50 percent charge. Repeatedly allowing the battery to drain fully may shorten its life and decrease its overall capacity.

At what percent should I charge my phone?

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."

Should iphones be charged to 100%?

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.

Does fast charging deplete battery?

The bottom line is fast charging won't impact your battery life substantially. But the physics behind the technology means you shouldn't expect the battery to last longer than using a conventional "slow" charging brick.

At what percentage should I charge my iPhone?

Apple recommends, as do many others, that you try to keep an iPhone battery between 40 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.

Should I charge my phone at 70%?

Avoid full cycle (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.

Can I unplug my iPhone at 80?

Charging at 100 Percent

Once the battery is full, the iPhone begins releasing a minute amount of its charge so it can continue receiving a charge without being damaged. Once the indicator says 100 percent, you can unplug it at any time.

Should I stop charging iPhone at 80?

You can charge when it's at 40% and disconnect when it reaches 80%, or any other values, without hurting the phone. And you don't have to turn it off to charge it; in fact, you shouldn't. And you can leave it plugged in while using it if you want to.

Why should you not let battery go below 50 %?

Studies seem to indicate that letting it discharge to 50% and then charging gets you more cycles out of your battery. If you let it go down to 10%, that's pretty bad. 20% is bad. 30-40% is bad.

How do I stop my battery from aging?

On Android, you can actually limit how much battery each individual app uses while running in the background. A better alternative to shutting them down, you can do this by going to Settings > Apps & Notifications and under that apps page, go to Advanced > Battery > Background restriction.

Is it okay to charge your phone twice a day?

It turns out that the batteries in our smartphones are much happier if you charge them occasionally throughout the day instead of plugging them in for a big charging session when they're empty. Charging your phone when it loses 10% of its charge would be the best-case scenario, according to Battery University.

Is it okay to unplug phone at 80?

This is supposed to optimally prolong the battery's lifespan. Realistically, it's not easy to stop the phone from... According to Cadex (the world's largest manufacturer of battery testing equipment), who should know, 50% to 80% is ideal for lithium batteries. 40% to 80% isn't too bad.

How do I stop charging at 80?

In theory, phone makers can stop a phone from charging at 80% or other limits. This can be done by modifying the O/S. But they probably are not going to do that since they want you to buy a new phone every few years. Their hope is that you would ruin your battery prematurely and then you would have to buy a new phone.

Is it OK to charge phone at 60?

Experts agree that keeping your phone's battery between 30 and 80 percent most of the time is the sweet spot for promoting its longevity. There is no danger in using your phone while it's charging. This myth comes from fears about batteries overheating.

How do I keep my battery healthy?

How many times should you charge your phone a day?

Most suggest the 20 – 80 rule, which you can definitely follow. You can even do 45 – 75 or others. As long as you understand what's harmful to your battery, you can tailor your charging habit according to your needs and daily routine.

How long does iPhone 40 battery last?

However, at 40 or 50 percent of battery health, things start degrading really rapidly. You will be able to use your iPhone only for a couple of hours after each charge. Once you drop below 40 percent of battery health, it's time to get a new battery.