How to Keep Your Devices’ Batteries Alive As Long As Possible

Extreme Temperature Isn’t Good

Not too hot, not too cool: a battery at the extreme ends of the weather spectrum is an inefficient one. You should try to keep your battery’s temperature between 5 to 45 °C (41 to 113 °F). Heat causes a battery to speed up its chemical reactions, which translates to a battery that drains faster than it should.

A cold battery is equally inhibited by the frigid weather, and has a lower capacity compared to a room temperature battery. One more thing: avoid charging your battery in below freezing temperatures, as you could permanently damage its capacity.

Unplugging and Discharging

Every battery has a lifespan, measured in the number of cycles. A cycle is complete every time the battery is fully recharged, whether all at once or over the course of a few days. A battery charged from 80% to 100% every day will take five days to complete one full charging cycle. Going from completely dead to fully charged is another charging cycle.

In general, you shouldn’t allow your battery to fall to dangerously low levels, and should start charging your devices when they fall below 20% to avoid placing stress on a battery by charging it from such a low level (charging from extremely low levels ages the battery and reduces cycle count). If you want, you can unplug your device after it’s fully charged, though most devices automatically cease charging when their battery is full, negating the worry of degrading the battery.

Charging a battery also means you’re expending a charge cycle, so the fewer times you charge it, and the less you charge all at once, the longer it will last. That means battery saving measures like Power Save mode on your devices should be considered when you’re looking to maximize your time up and running.

Monitoring Your Laptop Battery

macOS: Monitoring your battery on the Mac is easy, with the right app. If you’d rather not install any new software, you can look at your Mac’s system information and find the information you need to determine the health of your battery.

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