When is the best time to charge your Samsung Galaxy Watch?

Smartwatches continue to be all the rage, and Samsung is no slouch in this area. The company has some of the best smartwatches available in 2026, like the Galaxy Watch 8. If you want to get the most out of your Galaxy Watch, however, you’ll need to take care of your watch’s battery – and the best way to do that is to optimize your charging schedule.

As with any battery, you need to be careful about how much you charge a Galaxy Watch with and when you start charging it. Putting too much pressure on a battery can make it less efficient and even cause permanent damage, requiring replacement; it could cost between $50 and $70 if you get a DIY replacement (including the full price of batteries and tools) and a little more if you go through Samsung (no warranty) or a third-party repair shop. Either way, it’s best to make that battery last as long as possible, which starts with waiting for the right time to recharge it.

The optimal charging schedule for your watch will depend entirely on how you use it and what you do on a daily basis. Since you’ll likely use your watch to track vital signs, record physical activity, tell the time, and check for strange message notifications, the best time to charge will be during your downtime. If you are more active in the evening, charge in the morning – and vice versa. If you spend the middle of the day behind a desk or sitting, this can also be a good time to charge your watch, especially at the start of the work day.

If you want to further optimize your personal charging schedule, you should test how long it takes your watch to charge. Whether you’re using a Galaxy Watch 8 or Galaxy Watch 9 (or one of the older models), you can expect a full charge to take over an hour, but every device is different. Test your own watch battery by noting when you put your watch on charge and when you take it off, and track the length of that time window over a few days. Find the average there and you have a good frame of reference for more precise planning of charging periods.

An important thing to remember here is that you don’t need to fully charge your watch, especially because a model like the aforementioned Galaxy Watch 8 (one of Samsung’s best smartwatches) can last 30-40 hours on a full charge. Although lithium-ion batteries (like the one in your Galaxy Watch) charge better, a full charge can still degrade your battery. Therefore, consider following the 20-80 rule: start charging at around 20% and charge until you reach 80%, rather than 100%. While not essential for Galaxy Watches 8 and newer, as they have built-in battery protection, avoiding cell depletion from lower levels and voltage from higher levels will improve your battery life.

Naturally, if you want to avoid full recharges, charging overnight won’t always be optimal. If you don’t care about tracking sleep data and don’t have much time to charge your device in the morning or early afternoon, nightly charging may be beneficial. However, if you want to benefit from this sleep data and don’t want to risk overcharging your battery, nighttime charging is not recommended.