How to Fix a MacBook Pro Battery That‘s Draining Too Fast
As a Mac technician with over a decade of experience, one of the most common issues I see is MacBook Pro batteries that drain far too quickly. It‘s an annoying problem that can really put a damper on your productivity and enjoyment of your laptop. The good news is, in many cases it‘s fixable!
In this detailed guide, I‘ll walk you through the step-by-step process I use to diagnose battery draining issues on MacBook Pros and optimize the settings for better battery life. Whether your MacBook is brand new or a few years old, these tips should help you squeeze more juice out of each charge. Let‘s get started!
Why Is My MacBook Pro Battery Draining So Fast?
First, it‘s important to understand why your MacBook Pro‘s battery life may have taken a turn for the worse. Even if you‘ve had your trusty laptop for years without issue, battery performance naturally declines over time due to:
- Battery degradation – Rechargeable lithium-ion batteries in laptops degrade with usage and age. After a few years, maximum battery capacity is often significantly reduced.
- Increased cycle count – Each complete discharge and recharge is one cycle. The more cycles the battery goes through over its lifespan, the less charge it can hold.
- Software and usage changes – Installing new programs, changing your settings, or using your laptop differently can impact battery life, even if the battery itself is still in good shape.
So don‘t worry, a sudden drop in battery life doesn‘t necessarily mean something is wrong with your MacBook Pro. It could just be a fixable software issue or normal long-term battery wear. Let‘s start troubleshooting.
How to Check Your MacBook Pro‘s Battery Health
First things first, let‘s get a handle on your battery‘s current condition so we know what we‘re dealing with. Here‘s how to check your MacBook Pro battery‘s health:
Look for Service Warnings
An easy first step is to click on the battery icon in your menu bar. If you see a "Service Recommended" or "Replace Soon" warning, your battery is likely on its last legs and should be replaced soon for optimal performance.
If you don‘t see any warnings, that‘s a good sign! But let‘s dig a little deeper in the System Report.
Review Battery Cycle Count
Open the Apple menu and select "About This Mac." Then click "System Report" and find the "Power" section. Here you‘ll see your battery‘s current cycle count and condition.
Typically, MacBook Pro batteries are designed to retain 80% of their original capacity for 1000 complete charge cycles. If your cycle count is getting up there (over 700-800) and the condition says "Normal," you‘ll likely need a replacement soon to avoid performance issues.
But if your cycle count is still low, the problem probably lies elsewhere. Let‘s keep investigating with some third-party tools.
Get More Battery Details from CoconutBattery
For even more insight into your battery‘s health, try a free app like CoconutBattery. It provides current charge info and compares your battery‘s current maximum capacity to its original design capacity.
If the current capacity is less than 80% of the original after a full charge, it‘s usually time for a replacement. But if your battery still has plenty of life left according to CoconutBattery, let‘s see if we can resolve the draining issues with some tips and tricks.
Hardware Fixes for MacBook Pro Battery Draining
A couple of quick hardware resets and recalibrations can sometimes resolve battery issues, especially if your MacBook Pro battery is draining fast even when it‘s fully charged and the laptop isn‘t being used. Here‘s what to try:
Reset the SMC
The SMC (System Management Controller) handles many hardware functions, including battery charging. To reset it:
- Shut down your MacBook Pro
- Press and hold down the Shift + Control + Option keys and the power button simultaneously for 10 seconds
- Release all keys and turn your MacBook Pro back on
Recalibrate Your Battery
Fully discharging and recharging your battery every few months helps the onboard controller recalibrate the battery life estimates. Here‘s how:
- Fully charge your MacBook Pro and keep it plugged in for 2 hours after reaching 100%
- Unplug the power adapter and use your laptop normally until you get the 10% battery warning
- Save your work and let the battery discharge completely until your laptop goes to sleep
- Leave the laptop off and unplugged for at least 5 hours or overnight
- Plug your MacBook Pro back in and fully charge it to 100% again
After resetting the SMC and recalibrating your battery, you should have more accurate battery life estimates and potentially longer run times. If the battery is still draining much faster than expected, move on to software optimizations.
Software Fixes to Extend MacBook Pro Battery Life
Software and settings have a huge impact on battery drain. Let‘s make sure yours are optimized for the best possible battery life:
Clean Out System Junk and Unnecessary Apps
Outdated junk files, caches, large unused apps and background processes can use up precious battery life. I like to periodically clean out my MacBook Pro using CleanMyMac X.
Just launch the app, scan your system, and remove unneeded files to improve performance and battery efficiency. Try to get in the habit of regularly closing apps and background processes you aren‘t using too.
Adjust Your MacBook Pro‘s Energy Saver Settings
Open System Preferences and click on "Energy Saver." Make sure the "Put hard disks to sleep when possible" and "Slightly dim the display while on battery power" checkboxes are enabled.
Consider lowering the "Turn display off after" slider to 5 minutes or less to conserve battery. In the Power Adapter tab, uncheck "Wake for network access" and "Enable Power Nap" if you have them enabled.
Reduce Screen Brightness and Keyboard Backlighting
The display is the biggest power draw. I keep mine at 50% brightness or less when trying to eke out more battery life. You can quickly adjust brightness with the F1 and F2 keys.
Disabling keyboard backlighting or lowering its timeout can help too. Go to System Preferences > Keyboard and drag the "Turn keyboard backlight off after" slider down to 5 seconds.
Avoid Extreme Temperatures
Try not to leave your MacBook Pro in freezing cold or sweltering hot environments for extended periods of time. The ideal comfort zone for lithium-ion batteries is 62° to 72° F or 16° to 22° C. Extreme heat in particular will degrade batteries faster.
When You Actually Need to Replace Your MacBook Pro Battery
If you‘ve tried all the hardware resets and software optimizations but your battery is still draining in half the time it used to, it‘s likely time for a replacement. I generally recommend a battery swap if:
- You see a "Service Battery" warning
- Battery health is "Poor" and max capacity is under 80% of original
- Cycle count is over 1000
- Battery drains extremely fast (in an hour or two) even when optimized
- Battery won‘t charge to 100% or MacBook Pro shuts down unexpectedly
Fortunately, MacBook batteries can be replaced! Make an appointment at your local Apple Store or Apple Authorized Service Provider to have a trained technician install a genuine new battery. With a fresh battery and optimized settings, your MacBook Pro will be back to running for 8+ hours on a charge.
Tips to Prolong MacBook Pro Battery Lifespan
Once you have a MacBook Pro with a healthy battery again, here are my top tips to keep it in tip-top shape for as long as possible:
- Routinely clean out unused apps and system junk
- Keep your MacBook Pro updated to the latest macOS version
- Avoid running it down to 0% – aim to keep it between 20-80% charge
- Don‘t leave it plugged in and charged to 100% all the time
- Cycle the battery monthly (discharge to 20%, then charge to 80%)
- Enable optimized charging to reduce battery aging
- Store it with a 50% charge if you won‘t use it for weeks or months
The Wrap-Up
Well folks, that‘s everything you need to know to fix a MacBook Pro battery that‘s draining too fast! I hope these diagnostic and troubleshooting steps help you get your battery life back on track without needing an expensive replacement.
If you‘re still having issues after following this guide, don‘t hesitate to contact Apple support or take your laptop in to the Genius Bar for expert assistance. As always, feel free to reach out to me with any other questions. Here‘s to keeping our MacBooks running strong!