At What Percentage Should I Charge My Apple Watch

At What Percentage Should I Charge My Apple Watch?

Apple Watch is one of the best smartwatches on the market, and it comes with many great features, but it also struggles when it comes to battery life.

Like most smartwatches, Apple Watch also offers a battery life of around 18 to 20 hours.

However, the problem is that the battery life of the Apple Watch decreases with time, but there are some measures that you can use to delay the decay and keep your Apple Watch’s battery healthy.

In this WearToTrack guide, I’ll provide answers to the common question: At What Percentage Should I Charge My Apple Watch? and to other related questions to the charging and storing of the Apple Watch. Let’s get started.

Which Type Of Battery Does The Apple Watch Use?

Let’s start with discussing the type of battery the Apple Watch uses because it will tell you a lot about its battery life and other attributes. Like most smartwatches, Apple Watch also uses a Lithium-ion battery, arguably one of the most efficient battery technologies available in the market.

The thing with Lithium-ion batteries is that their holding capacity decreases every time you charge them, and this whole process is known as chemically aging. As you charge your battery more often, its ability to hold its charge will decrease, and once it’s decreased to its low, it will start showing signs of aging. Some of the common problems you will experience will be low frame rates, delays in the launch of apps, screen dimming, and low battery life.

At What Percentage Should I Charge My Apple Watch?

It’s a fact that aging happens to all Lithium-ion batteries, but there are two factors that play an important role in determining the health of your battery. In the next few paragraphs, I’ll discuss these factors, and you will also get the answer to our main question, which is: At what percentage should you charge your Apple Watch?

These two factors are

  • Charge Cycles
  • Environmental temperature & Battery percentage at which you store your Apple Watch

Charge Cycles

Let’s start with the first factor, which is the Charge Cycle. In simple terms, Charge Cycle is when you consume your battery from 100% to 0%, and this will be considered one charge cycle. As more charge cycles are completed, the battery life of your lithium-ion battery will decrease.

However, lithium-ion battery reacts completely differently to various segments of the charge cycle. For example, if your battery discharge from 80% to 30%, it will put less strain on your battery as compared to when your battery discharge from 50% to 0% because the temperature rises in the second segment.

In my research, I came across interesting research by Battery University, where the researchers found the ideal charge cycle of lithium-ion batteries. In the study, the researchers studied the behavior of lithium-ion batteries at various battery levels and their discharging, and they concluded that the ideal charge cycle for lithium-ion batteries is 75% to 25% if you want to prolong their life.

It means that if you want to maintain the capacity of your battery, it’s important that you charge your battery to 75% and not let it discharge below 25%. In the study, they also found that the charge cycle between 100% and 25% was less effective than the above charge cycle.

They also found that the charge cycle of 75% to 65% was the best, but the researchers concluded that it wasn’t a sustainable charge cycle.

In a nutshell, if you want to maintain the current capacity of your Apple Watch’s battery, it’s important that you keep the charge cycle between 75% to 25%.

Environmental Temperature & Battery Percentage At Which You Store Your Apple Watch

The second factor which affects the battery’s health is the environmental temperature. According to Apple, Apple Watch must not be kept below 32°F and not higher than 95°F. The ideal temperature for using Apple Watch is between 32ۜ°F and 95°F.

If you use your Apple Watch outside the recommended ambient temperatures, the health of your battery life will be affected, and you will see a rapid decline in its health with time.

What’s The Safe Way Of Storing The Apple Watch For The Long Term?

If you want to store your Apple Watch for the long term, it’s very important you do it the right way, and I’ll explain in the next few sections. According to Apple, if you want to safely store your Apple Watch for the long term, it’s important that you follow these four steps.

Step 1

The First step you need to do is to make sure that your Apple Watch isn’t fully charged. The company recommends that you charge your battery at 50%.

If you charge at a fully discharged level, it’s possible that your watch might go into a deep discharge state, which makes your battery useless as it won’t be able to hold a charge. Similarly, if you store your battery at 100%, with time, the capacity of your battery will decrease, and it will reduce the battery life. So, the ideal charge level for storing your watch is 50%.

Step 2

The second step is that you turn off your smartwatch so that the watch doesn’t use the charge of the battery.

Step 3

The third and very important step is that you keep your smartwatch in a temperature-controlled and moisture-free environment. It’s also very important that you keep your smartwatch at a temperature below 90°F.

Step 4

Last but not least, once you store your Apple Watch, it’s important that you take it out every six months and recharge it back to 50% to keep it in good condition.

Frequently Asked Questions [ FAQs ]

Should I Charge My Apple Watch To 100%?

No, Experts don’t recommend that because it will reduce the battery capacity of your Apple Watch. According to research, the ideal charging cycle is 75% to 25% which will prolong your battery capacity, and you will keep getting good battery life.

Should I Charge Apple Watch Daily?

If you are an avid Apple Watch user and you wear it most of the time, you can surely charge it daily. However, make sure that you don’t charge it to 100% daily and keep the charge cycle between 75% and 25% for better results.

Do You Have To Fully Charge Your Apple Watch Before Use?

No, there’s no hard and fast rule about fully charging your Apple Watch before you use it. So, if you are using your Apple Watch for the first time, you can charge it up to 75% and start using it.

Can You Charge Apple Watch Too Much?

No, Apple Watch comes with many safety mechanisms which prevent users from charging their Apple Watches too much. The first safety switch is that once your Apple Watch is charged to 80%, the charging speed will get slower. According to experts, you shouldn’t let your Apple Watch on charge for longer periods as it can affect its health.

Is It Ok To Charge Apple Watch Overnight?

No, it’s not recommended because if you leave your watch on charge overnight, the health of your battery will decrease. The average charging time of the Apple Watch is 90 minutes, so It’s recommended that you recharge your Apple Watch before you go to bed.

How Low Should I Let My Apple Watch Battery Get?

The experts recommend that you shouldn’t let your Apple Watch battery get below 25% if you want to prolong the battery life and keep your battery healthy.


That’s all, folks. In this comprehensive guide, I shared the factors which affect the battery life of your Apple Watch, and I also shared the ideal charge cycles at which you should keep your Apple Watch for better results.

I hope that you found this guide useful, and don’t forget to share it with your friends who own an Apple Watch.