Should I Keep My Phone Battery between 20 And 80?

Published on: October 3, 2022
Written by Jonas Frank / Fact-checked by Nova Scarlett

When it comes to cell phone battery care, there’s a lot of conflicting information out there. Some people say that you should keep your battery at 20 percent in order to prolong its life, while others say that you should charge it up to 80 percent. So, which is the right way to go?

should i keep my phone battery between 20 and 80

Your phone battery is one of the most important parts of your device. It’s what keeps your phone running and allows you to use all of its features. So, it’s important to keep your battery healthy and working properly.

One way to do this is to keep your battery between 20% and 80%. This range will help prolong the life of your battery and keep it working at its best. If you let your battery drain below 20%, it can damage the cells and cause them to degrade over time.

This will shorten the overall lifespan of your battery. And if you charge your battery above 80%, it can also damage the cells and cause them to degrade over time. So, it’s best to avoid both extremes and stick with the 20-80% range.

Of course, there are times when you may need to let your battery drain below 20% or charge above 80%. But try to limit those occasions as much as possible and you’ll be doing your battery a favor in the long run!

How Long Will My Phone Battery Last Calculator?

Your phone battery is one of the most important parts of your device. It’s what keeps your phone running and allows you to use it for long periods of time. However, batteries don’t last forever.

They have a certain lifespan and will eventually need to be replaced. So how long will your phone battery last? It depends on a few factors, including:

1The type of phone you have
2How often you use your phone
3What apps and features you use most often
4The age of your battery Fortunately

There’s a helpful tool that can give you a more accurate estimate: the How Long Will My Phone Battery Last Calculator. Simply enter in some basic information about your phone and usage habits, and the calculator will do the rest.

In just a few seconds, you’ll know approximately how long your battery will last. Give it a try today and see how long you can expect your phone battery to last!

How Many Hours Should a Phone Battery Last in a Day?

Most phone batteries will last an entire day with normal use. However, if you are a heavy user of your phone’s features, such as playing games, streaming videos, or using GPS, your battery may not last as long. There are a few things you can do to help extend your battery life:

Use Power-saving Mode

This mode can help reduce your power consumption and extend your battery life.

Reduce Screen Brightness

A brighter screen uses more power than a dimmer one. So, turning down the brightness will help save battery power.

Limit Background App Refreshing

Many apps refresh themselves in the background even when you’re not using them. This can drain your battery quickly. Limiting how often apps refresh in the background can help conserve power.

Turn Off Unnecessary Notifications

If you don’t need to be alerted every time someone likes your photo on social media, then disable those notifications!

How Long Will a Phone Battery Last If Not Used?

how long will a phone battery last if not used

If you’ve ever wondered how long your phone’s battery will last if you don’t use it, the answer is: it depends. The average lifespan of a lithium-ion battery is about two to three years, but that can vary depending on the type of phone you have, how you use it, and how well you take care of it. For example, if you have an iPhone 6s, its battery life is estimated to be around 1,500mAh.

That means that if you were to use your phone for one hour every day (which is probably less than what most people actually use their phones for), your battery would last just over three months before needing to be recharged. But if you only used your phone for 30 minutes a day, your battery would last nearly seven months. And if you never used your phone at all, your battery would theoretically last forever.

Of course, in reality, there are other factors that can affect how long a phone’s battery lasts when not in use. For instance, temperature plays a role in how quickly a battery degrades. So if you live in a cold climate and don’t use your phone very often, its battery may not last as long as someone who lives in a warm climate and uses their phone regularly.

Also, even when not in use, some apps continue to run in the background and can drain the power from your battery faster than others. So while there’s no definitive answer to how long a phone’s battery will last when not used, hopefully this gives you some idea of what to expect. If you’re planning on storing away your phone for an extended period of time (like over six months), it might be worth considering removing the SIM card and/or disconnecting from any sort of data plan to help preserve its charge.

20-80 Rule Battery

The 20-80 Rule is a guideline that suggests that 20% of battery capacity will provide 80% of power needs. This leaves the other 80% of capacity for the final 20% of power needs. The rule is often used when sizing backup batteries, as it allows for a smaller and less expensive battery to be used while still providing adequate power in most situations.

How do you size a backup battery using the 20-80 Rule? First, calculate your average daily power usage. This can be done by adding up your total energy use over the course of a month and dividing by 30.1 days (the average number of days in a month).

Once you have your average daily power usage, multiply this number by 0.2 to get your minimum daily backup battery size. For example, if your average daily power usage is 10 kWh, then you would need at least a 2 kWh backup battery according to the 20-80 Rule. Of course, there are exceptions to every rule and the 20-80 Rule is no different.

If you live in an area with frequent power outages or have critical medical equipment that requires uninterrupted electricity, then you may want to size your backup battery accordingly. In these cases, it may make sense to purchase a larger battery that can provide 100% of your power needs rather than relying on the 20-80 Rule.

How Many Cycles Does a Phone Battery Have?

When it comes to phone batteries, there is no one-size-fits-all answer. The number of cycles that a battery can go through before it needs to be replaced varies depending on the type of phone, the quality of the battery, and how it is used. The average smartphone has a lithium ion battery which will last for around 400-500 charging cycles.

However, this is just an average – some people may find that their battery lasts much longer while others may need to replace theirs more frequently. Factors that can affect how long your phone’s battery will last include:

Type of Phone

Some phones are simply designed better than others when it comes to battery life.

For example, iPhones generally have better batteries than Androids.

Quality of the Battery

Not all batteries are created equal – even within the same brand or model of phone. Some will simply have stronger cells that will hold a charge for longer periods of time.

How You Use Your Phone

If you’re constantly using power-hungry apps or leaving your screen on for extended periods of time, you’ll likely see a shorter lifespan for your battery in comparison to someone who uses their phone more sparingly.

Is Slow Charging Better for Battery Phone?

is slow charging better for battery phone

Slow charging your battery may prolong its life. It’s a common misconception that if you want to keep your phone’s battery healthy, you should charge it as quickly as possible. In fact, slow charging may be better for the long-term health of your battery.

When you charge your phone rapidly, it causes the battery to heat up, which can degrade the quality of the cells over time. Slow charging, on the other hand, allows your phone to slowly and evenly absorb power, which can help preserve the lifespan of your battery. Of course, there are also some downsides to slow charging.

For one thing, it takes longer to top off your phone’s battery when you’re using a slower charger. And if you’re in a hurry and need to get a quick boost of power, slow charging probably isn’t going to cut it. At the end of the day, it’s up to you whether you want to charge your phone quickly or slowly.

If you’re not worried about time and just want to make sure your battery lasts as long as possible, then go ahead and plug into that slow charger.

Should I Drain My Phone Battery Once a Month?

If you’re like most people, you probably charge your phone every day. But have you ever wondered if you should be draining your phone battery once a month? The answer is yes!

Draining and then recharging your phone battery once a month can help extend its lifespan. Here’s how it works: When you regularly drain and recharge your phone battery, it helps to keep the battery cells active and prevent them from aging too quickly.

over time, this can help increase your phone’s battery life. So if you want to help prolong your phone’s battery life, make sure to drain and recharge it once a month!

Should I Drain My New Phone Battery?

If you’ve just gotten a new phone, you might be wondering if you should drain the battery before charging it. The answer is no! There’s no need to do this with today’s lithium ion batteries.

In fact, it’s actually better to charge them frequently, rather than letting them discharge all the way before recharging. So go ahead and plug in your new phone when you can – your battery will thank you for it!

Should I Limit Battery Charge to 80?

should i limit battery charge to 80

It’s generally advised that you keep your phone battery between 40 and 80 percent charged to prolong its lifespan. But what happens if you let it dip below 40 percent or charge it all the way to 100? At lower levels, like 30 percent, your phone may shut down unexpectedly because there isn’t enough juice to keep things running.

And at 100 percent, you might notice reduced battery life because the battery is working harder to maintain that top-off charge. So yes, it’s a good idea to keep your phone charger handy, but you don’t need to obsess over hitting an exact number like 80 percent.

Is the 40 80 Battery Rule True?

The 40 80 battery rule is based on the theory that a car battery will last for 40,000 miles if it is regularly maintained and replaced every 80,000 miles. This rule is not necessarily true for all car batteries, as there are many factors that can affect the lifespan of a battery. However, following this rule can help to extend the life of your battery and keep your car running smoothly.

To maintain your battery, it is important to regularly clean the terminals and check the fluid level. You should also avoid overcharging your battery, as this can shorten its lifespan. If you do need to replace your battery, be sure to choose a high-quality one that will fit your car properly.

With proper care and maintenance, following the 40 80 battery rule can help you get the most out of your car’s battery.

What Percentage Should You Keep Your Phone Battery At?

When it comes to phone batteries, there is a lot of debate about what percentage you should keep your battery at. Some people say that you should keep your battery at 100% all the time, while others say that it’s better to keep it around 50%. So, what is the right answer?

The truth is, there is no one-size-fits-all answer to this question. It depends on a few factors, such as how often you use your phone and what type of activities you do with it. If you only use your phone for basic tasks like making calls and sending texts, then keeping your battery at 100% all the time shouldn’t be a problem.

However, if you use your phone for more power-intensive activities like gaming or streaming video, then you may want to keep your battery around 50%. Ultimately, it’s up to you to decide what works best for you. If you find that keeping your battery at 100% all the time is too much of a hassle, then try keeping it around 50%.

And if you find that 50% just isn’t enough power for your needs, then go ahead and keep your battery at 100%.


Your phone battery is like a car battery, in that it will last longest if you keep it between 20 and 80 percent charged. The reason for this is that Lithium-ion batteries degrade faster when they are fully charged or discharged.

So, to get the most out of your battery, charge it up to 80 percent and then top it off as needed.

Read more:

Rate this post

Leave a Comment