Many smartwatch models have relatively short battery life and they can barely last for one day. Apple and Samsung are currently the market leader and they are offering devices with good features and designs. Despite improvements in other features, the battery is still small. For many users, it’s more convenient to charge their smartwatch overnight while they are sleeping. However, there are concerns that overcharging your smartwatch will shorten its lifespan. In reality, modern devices switch off the charging process automatically when the battery has reached maximum capacity. So, it’s inherently acceptable to leave your smartwatch charged overnight. Li-ion batteries have a built-in protection circuit to prevent lithium-ion.
The device also has an integrated management system as another layer of protection against overcharging. It will cut the supply of electricity when the battery is fully charged. Depending on the type of your smartwatch, it may take between one to three hours to fully charge your smartwatch. If you have a high-end smartwatch, it usually has a trickle charging feature that balances the amount of battery power lost due to background activity and the amount of power sent to the battery. But if your smartwatch doesn’t have such capability, it will continue to charge the battery, which may result in the gradual degradation of your battery. Naturally, the Li-ion battery is halved in capacity every two years and after three years, it is practically unusable, unless you have constant access to a wall outlet.
It’s not true that you should let the battery of your smartwatch drop down to zero percentage, before your charge it. Some people say that this will reset the battery and it will recover lost battery life. In reality, this will hurt your Li-ion battery and it will hold less charge as a result. In general, it is considered safe to charge your smartwatch overnight, but you need to turn it off, whenever possible, so it won’t continue to compensate for the loss of battery power, due to background services. If you prefer to keep the smartwatch turned on, make sure that it won’t overheat when you charge it overnight. In many cases, your smartwatch can last for an extra day or two, if you manage smartwatch operations. The less you charge your smartwatch, the fewer its charging cycle, which will extend the life of your battery.
Consider uninstalling apps that you no longer, especially if they run in the background. This will help you improve battery life and if your smartwatch has too many apps, it will draw too much power. In many cases, pre-installed apps are adequate for your daily activities. Consider lowering the brightness of your display or disabling the always-on feature. You may crank up the brightness of your display when you spend more time outside. Also, disable unnecessary notifications to improve battery life, and don’t let your smartphone send notifications to your smartwatch. It’s also a good practice to disable Wi-Fi, Bluetooth, cellular, or GPS if you have any or all of these connection options in your smartwatch.