How Long do you Charge a Smartwatch?

If you have a smartwatch and aren’t sure how long it takes to charge it, this article is for you. This article explores detail about different types of smartwatches and their charging times.

How Long do you Charge a Smartwatch

Charging times are usually less for newer models because they have more efficient batteries. Older models need more time to get charged fully. The charging time also depends on the type of charger that you are using.

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The charger or any USB cable that comes along with the box of the smartwatch is what you will need to charge your smartwatch. Otherwise, use a charger that the manufacturer recommends.

How long do you charge a smartwatch?

Before we go ahead with the smartwatch charging time, let us have a look into some factors that affect the charging time of smartwatches.

Factors That Affect The Smartwatch Charging

  • Original Adaptor: It is important to use only the charger which the manufacturer recommends for your specific type of smartwatch. This way, you can ensure that your watch would charge faster and last longer than usual.
  • Charging Cable: The type of cable matters a lot in case you are using a non-original charger. Charging with a damaged or faulty cable may result in slow charging time, which might even damage your smartwatch in the long run.
  • Temperature: Temperature is another but important factor that affects the charging time of smartwatches. Leaving your watch in an extremely hot or cold environment during charging would lead to slowing down or shortening the battery life. It is also a concern if your battery gets hot while charging. In such cases, stop using the charger immediately and take your watch to a service center if required.

Apple Watch Charging time

When you use the official charger, the Apple Watch takes only one hour to charge the battery from 0-80%. However, it takes another 30 minutes to charge 100%. This is almost the same for all Apple Watches.

The Apple Watch can also be charged wirelessly, which is quite handy. The time it takes to reach 100% when charging your watch with a wireless charger is the same as for wired charging, i.e., around 90 minutes.

Make sure you read our extensive guide on Apple Watch battery-saving tips to ensure you’re saving as much battery life as possible.

Garmin Watch Charging time

Garmin Smartwatches take around 3-4 hours to charge the battery in most of the smartwatches by Garmin.

Garmin Smartwatches are known for their advanced activity tracking features. Because of this reason, they use comparatively larger batteries on their higher-end models, such as Garmin Fenix 6 Pro, Garmin Tettix, etc.

Garmin offers several solar-powered smartwatch models. These models provide longer battery life as they charge continuously throughout the day during your outdoor activities in bright sunlight. Fenix 6 Pro Series, Instinct, and Tactics are examples of solar-powered smartwatches by Garmin.

Fitbit Smartwatches Charging time

Fitbits, on the other hand, take one to two hours to charge the watch when charged with a standard or company-recommended USB cable and charger. Advanced Fitbits like the Versa 3 and Sense can last for 24 hours with 12 minutes of charging.

Charging time for Fossil Smartwatches

Almost all Fossil smartwatches take 3-4 hours to charge their batteries from empty to full. The Fossil Gen 5 watch, on the other hand, takes only 50 minutes to charge from 0-80 percent. The recently released Fossil Gen 6 Smartwatch comes with a fast-charging feature. The required time to reach 0-80% in this latest smartwatch is only 30 minutes, which is excellent.

Samsung Galaxy Watch Charging time

Samsung Galaxy Watches can be charged in 3 different ways: wirelessly, wired, and by a wired connection. Wireless charging is relatively simple. If you are using an officially recommended charger of any format, it takes 3-4 hours to charge the watch fully.

I fact, many times, I have noticed that wireless charging takes more time than wired one.

Wireless PowerShare technology enables by Qi is an innovative feature in Samsung devices. This feature allows you to charge your Samsung Galaxy Watch Series for a quick charge boost from compatible smartphones such as Galaxy S20, S20+, S20 Ultra, and Z Flip.

Smartwatch NameCharging TimeCharging Technology
Apple Watch1. 0-80% in one hour
2. 100% In 90 minutes
1. Wired
2. Wireless
Samsung Galaxy Watches1. 3-4 hours to reach 100%1. Wired
2. Wireless
3. Quick power share
Garmin Watches3-4 hours to charge completelyWired Charger
Fitbit1-2 hoursWired Charger
Fossil Watches1. 3-4 hours
2. Fossil Gen 5(0-80% in 50 min)
3. Fossil Gen 6(0-80% in 30 min)
Garmin Fenix 6 Solar< 3 hoursWired
Garmin Instinct Solar2.3 hoursWired
Amazfit T-Rex Pro2 hoursWired
Huami Smartwatches2-2.5 hoursWired
Amazfit Smartwatch1-1.30 hours+Wired

Can I charge my watch overnight?

It s not a good idea to charge your smartwatch overnight. Charging the device overnight might damage the battery and is therefore dangerous.

On the other hand, advanced smartwatches like Apple Watches were designed with a specific charging technology that does not allow them to be charged more than 100%. Once your battery reaches 100%, it will automatically stop charging and does not cause any harm to the battery.

However, my recommendation is to stop charging your smartwatch once the battery reaches 90+ or full. Also, there is no reason to charge your smartwatch overnight because you can fully charge most of the smartwatches in less than 2-3 hours.

  1. Can I charge my smartwatch with my phone?

    If you use a Samsung Galaxy Watch Series along with a compatible smartphone, then you can use the power-sharing feature to charge the smartwatch with the smartphone.

  2. Does Fitbit Support wireless charging?

    No, Fitbit does not support wireless charging. Unlike Samsung or Apple, Fitbit does not have a feature that allows you to charge the smartwatch using a wireless charger.

  3. How can I charge my smartwatch without a charger?

    As mentioned earlier, if you use Samsung Galaxy Watch Series, it is possible to charge the smartwatch with a smartphone. All you need to do is put your Galaxy Watch on the back of your smartphone and enable fast wireless charging mode by putting the phone in power-saving mode.

Final Words

It’s hard to make a blanket statement about how long you should charge your smartwatch. All brands offer different battery life and charging times depending on the type of watch (smart or activity-tracker) and the features it provides. 

The best thing for you is to read our in-depth article on “How long do you charge a smartwatch,” covering all leading brands’ charging time specifications. I’m glad that I could provide you all of the information you need to evaluate whether an Apple Watch with its fantastic features but shorter battery life is suitable for you or a smartwatch like Garmin or Samsung with longer battery life is appropriate.

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