Why is my Macbook showing wrong battery levels & how to fix it!

macbook showing wrong battery percentage
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Ever wondered why your Mac seems to have a mind of its own when it comes to battery levels? Let’s unravel the mystery together! In this guide, we’ll explore the quirks that cause Macbook showing Wrong Battery levels.

Let’s arm you with straightforward fixes to keep your Mac’s battery accuracy on track.

Say farewell to the frustration of guessing your device’s energy levels. We’ll walk you through each step, ensuring you understand the ‘why’ and the ‘how.’

Get ready to reclaim control over your Mac’s power game and enjoy a smoother, worry-free computing experience. Let’s dive in and demystify your Mac’s battery blues!

Why is my Mac showing Inaccurate battery percentage?

Understanding the potential reasons behind a MacBook showing wrong battery levels allows users to troubleshoot effectively. Depending on the specific cause, solutions may range from simple recalibration and software updates to more complex hardware repairs.

Apple MacBook users may encounter instances where the battery level displayed doesn’t accurately reflect the actual charge remaining. Several reasons could contribute to this issue.

In the next section, we will talk about how to fix the wrong battery percentage issue on Mac. However, first lets see the reasons for inaccurate battery levels.

1) Battery Calibration

Over time, the MacBook’s battery calibration may become skewed, leading to inaccurate readings.

You can calibrate this issue by fully charging and discharging your Macbook.

2) System Management Controller (SMC) Issues

The SMC is responsible for managing various hardware components, including the battery. If the SMC malfunctions or encounters errors, it can result in incorrect battery-level reporting.

3) Software Bugs or Glitches

Software-related issues within the macOS can sometimes lead to incorrect battery readings. Bugs or glitches in the operating system might interfere with the communication between the battery and the MacBook.

4) Faulty Battery Sensor

A malfunctioning battery sensor can cause the MacBook to misinterpret the charge level. This hardware issue may require professional attention to replace or repair the faulty sensor. I recommend contacting Apple support for this type of issue.

5) Outdated System Software

Running an outdated version of macOS might lead to compatibility issues with the MacBook’s hardware, affecting the accuracy of battery-level reporting. Keeping the operating system up to date is crucial for optimal performance.

6) Third-Party Accessories

Connected external devices or accessories, such as power adapters or cables, may impact the MacBook’s ability to measure the battery level accurately. Using genuine Apple accessories is recommended to ensure compatibility.

7) Temperature Extremes

Exposure to extreme temperatures, either too hot or too cold, can adversely affect battery performance. Operating the MacBook in such conditions may result in inaccurate battery level reporting.

5 ways to fix Wrong Battery Percentage on Macbook

Here are 5 super-simple ways to fix faulty or inaccurate battery percentage on Mac.

1) Calibrating the Battery

A misaligned calibration is a common reason for inaccurate battery readings on a Mac. Over time, the battery’s internal system might lose accuracy, leading to misleading charge levels. To address this, it’s advisable to calibrate your Mac’s battery periodically.

Here’s how to recalibrate your Mac Battery:

a. Drain the Battery: Use your Mac until the battery is nearly depleted and the device goes into sleep mode.

b. Let It Rest: Allow your Mac to remain in sleep mode for at least five hours to ensure a complete discharge. I recommend leaving your Mac overnight in sleep mode.

c. Charge It Up: Plug your Mac into a power source and let it charge to 100% without interruption. Also, do not use your Mac during this period. Let it charge to 100 per cent of the battery’s capacity.

This process helps your Mac recalibrate its battery sensors, potentially resolving the issue of inaccurate charge readings.

2) Resetting the System Management Controller (SMC)

The System Management Controller plays a crucial role in managing various hardware aspects of your Mac, including the battery.

Resetting the SMC can sometimes resolve issues related to incorrect battery levels.

Here’s how you can reset the SMC on different types of Macs.

Click here to know if your Mac has T2 Security chip.

1) MacBooks with T2 Security Chip

  • Shut down your Mac
  • Hold down the power button for 10 seconds
  • Release the power button and wait a few seconds
  • Turn on your Mac

2) MacBooks without T2 Security Chip

  • Shut down your Mac
  • Press and hold the following keys for 10 seconds: Shift + Control + Option + Power Button.
  • Release the keys
  • Turn on your Mac.

3) MacBook Air/Pro with Removable Battery

  • Shut down your Mac
  • Remove the battery
  • Press and hold the power button for five seconds
  • Reinstall the battery
  • Turn on your Mac.

4) iMac, Mac Mini, Mac Pro

  • Shut down your Mac
  • Unplug the power cable
  • Wait 15 seconds
  • Plug in the power cable
  • Turn on your Mac

Resetting the SMC can often correct various hardware-related anomalies, including inaccurate battery readings.

3) Checking for Software Updates

Apple regularly releases updates to macOS that include bug fixes and improvements. Outdated software can sometimes contribute to battery-related issues.

Ensure that your Mac is running the latest version of macOS by following these steps.

  • Click on the Apple logo in the top-left corner
  • Select “System Preferences
macbook showing inaccurate battery levels
  • Choose “Software Update”
macbook showing inaccurate battery levels
  • Install any available updates

Updating your operating system may include fixes for battery-related bugs that could be causing incorrect readings.

4) Using Apple Diagnostics

If the issue persists, it might be worthwhile to run Apple Diagnostics to check for potential hardware problems.

Here’s how you can do it.

  • Disconnect all external devices except the keyboard, mouse, display, & Ethernet adapter, if applicable.
  • Shut down your Mac.
  • Turn it on and immediately press the power button to open start up options.
  • After the Startup options have appeared, Hold the “CMD + D” key until the Apple Diagnostics screen appears.
fix Wrong Battery Percentage on Macbook
  • Follow the on-screen instructions to run the diagnostics.
Run diagnostics to fix inaccurate battery level on mac

If Apple Diagnostics detects any hardware issues, it will provide guidance on how to address them.

Related: How to Enter & Use Recovery Mode on MacOS?

5) Reviewing Activity Monitor for Battery Usage

Sometimes, specific applications or processes can drain your battery faster than normal, leading to inaccurate readings.

Use the Activity Monitor to identify resource-intensive applications.

  • Open “Activity Monitor” from the “Utilities” folder in “Applications”. Or Use spotlight search to open the activity monitor.
Activity Monitor for Battery Usage
  • Check the “Energy” tab to see which apps are using significant energy.
macbook showing inaccurate battery levels

Under the “Energy” tab, filter the “energy Impact” column by decreasing order.

Now, you will be able to see the applications using significant amount

of power on your Mac. Also, in the column below named as “Energy Impact” will tell you about the pressure on Mac Battery.

If you notice any apps consuming excessive energy, consider updating or uninstalling them to improve battery performance.


Your Mac’s battery is critical, and accurate readings are essential for efficient use. If you find your Macbook displaying incorrect battery levels, follow the steps outlined in this article to troubleshoot and resolve the issue.

From calibrating the battery to resetting the System Management Controller, these solutions can help ensure that your Mac provides reliable and accurate information about its battery status. Remember to keep your operating system and applications up to date, as software updates often include fixes for such issues.

If problems persist, don’t hesitate to seek assistance from Apple Support. You can also visit an Apple Authorized Service Provider to address potential hardware issues. By taking these steps, you can optimize your Mac’s battery performance. Hence enjoying a seamless computing experience.

About vasu samnotra 82 Articles
Hey there, A bit about myself, I always loved playing and watching online games. So, I created boltgamer from scratch with an idea to level up our skills. HAPPY GAMING!

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