Avoid Exposing Your Mac to Extreme Temperatures By not letting your Macbook get low on power before plugging in again, you’re essentially reducing strain on your battery. This reduces the number of times your MacBook will have to charge and extends its life. When using your Macbook while not plugged into a power outlet, try not to let your battery get below 50% before plugging it in again. When you have access to an AC outlet available at home or elsewhere, use it. Here are some suggestions for keeping your battery healthy. If you plan to keep your MacBook in service for a long time, then keeping your battery in top condition ought to be a priority. However, after that point, a battery replacement will cost $129 or more. If it’s been less than a year since you bought your MacBook, you should still be under the warranty. If none of the above work, it’s time to take your Mac into an Apple store for service. If this clears up whatever the problem was, your ‘Service Battery’ warning should go away. Your MacBook should now be able to more accurately gauge the battery status. The next morning, plug your Macbook in and charge it to 100% power again.Leave your MacBook overnight without the power cord connected.Unplug the MacBook from the power supply and let the battery drain completely.Keep the laptop running while connected to the power supply for a couple of hours.
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Here’s how to recalibrate your MacBook’s battery:
Recalibrating the battery basically means discharging it completely and then recharging it completely.īattery recalibration takes a day or so, so if possible, do it over a weekend when you don’t have to have your MacBook for work. The next thing to try is recalibrating the battery. If a transient issue in the SMC was causing the Service Battery warning, this should address it. SMC controls the computer fans, backlights, and indicator lights, as well as some aspects of the display, ports, and battery, so resetting it will force your MacBook to revert back to its default settings for all these things. Press Shift+Ctrl+Option+Power at the same time and hold.The process is straightforward, but any customizations to your power plans or hardware settings may also be reset. While very reliable, it can occasionally have issues that require a reset. The first thing to try is resetting your System Management Controller (SMC), which is a hardware chip that controls some hardware settings, including the power system. I’ll show you how you can attempt to resolve the issue yourself before replacing the battery outright. If you get the Service Battery warning, the cycles are above about 1,000, then your battery’s likely pretty close to worn out.īut if your cycles are relatively low, then there may be other issues at play and you should use the methods I’m about to describe. How Do I Change Low Battery Warning on My MacBook? If you mouse over your battery icon on the status bar at the top of your screen, a popup will display the battery status, the amount of power remaining, and a list of apps that are using a lot of power. Your MacBook monitors the health of its battery. Partial charges do not count as a complete cycle if you discharge your battery a bit and then charge it back up, that will only count as a fraction of a cycle for its internal monitoring.
Note that the macOS is quite intelligent when calculating cycles. It will continue to degrade slowly over time and will eventually stop working altogether, but that can take years.
Note that even after this long life-cycle (a complete discharge and recharge every day for three years), your battery will still work - it just won’t have the same ability to hold a charge as it did at its peak.
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Apple states that its new batteries are designed to support 1,000 full charge-discharge cycles, after which the battery should still have 80% or more of its original capacity.
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