Table of Contents
1. When Should You Replace Your MacBook Battery?
Battery health below 80%
macOS shows âService Recommendedâ
Battery drains unusually fast
Trackpad lifted or bottom case bulging
MacBook only works when plugged in
If you checked 2 or more items above, battery replacement is strongly recommended.
2. Identify the Correct MacBook Battery Model
Step 1: Find your MacBook model:
 Apple Menu â About This Mac
Step 2: Check compatible battery model:
MacBook Model
Battery Model
MacBook Pro 13" A1708
A1713
MacBook Pro 13" A1989
A1964
MacBook Air A1466
A1496
MacBook Pro 15" A1990
A1953
đ Always check the Compatible Models  list on our MacBook Battery Finder Â
4.How to Safely Replace Your MacBook Battery
Step Overview
Remove bottom case
Disconnect battery
Remove old battery
Install new battery
Test & reassemble
Estimated time: 30â60 minutes
Step 1: Remove Bottom Case
P5 screwdriver â remove all bottom screws â lift cover
Step 2: Disconnect Battery Connector
â ď¸ Important: Disconnect the battery connector before touching any internal components to avoid short circuits.
Use plastic spudger â gently lift connector
Step 3: Remove Battery Screws
T5 / T3 screwdriver â remove all battery mounting screws
Step 4: Remove Old Battery
For adhesive-secured batteries:
1. Apply 90%+ isopropyl alcohol under battery cells
2. Wait 1â2 minutes
3. Gently pry up battery Â
Step 5: Install New Battery
1. Place battery into position
2. Secure screws (do not overtighten)
3. Do NOT reconnect battery yet Â
Step 6: Initial Power-On Test
1. Connect charger
2. Power on MacBook
3. If startup normal â reconnect battery connector Â
Step 7: Reinstall Bottom Case
Reattach bottom cover â tighten screws in original positions
Browse  batteries for your specific MacBook model
5. Battery Calibration After Replacement
1. Charge to 100% and keep charging for 2 hours
2. Use until MacBook shuts down automatically
3. Power off and wait 4â5 hours
4. Charge uninterrupted to 100% Â
6. Common Issues & Troubleshooting
MacBook Wonât Power On?
Check if battery connector is fully seated
Try powering on with charger only
Reset SMC (Intel MacBooks)
Battery Shows 0% or Wonât Charge?
Battery calibration not completed
Loose battery connector
Non-compatible charger
7.Apple Repair vs. DIY: Cost, Time & Risk Comparison
Item
Apple Service
DIY Replacement
Cost
High
Save 40â70%
Time
3â7 days
30â60 minutes
Data Risk
Low
Manageable
Skill Required
None
Moderate
 Still unsure? Read our detailed comparison: Apple Repair vs. Third-Party Service: Pros and Cons
Frequently Asked Questions (FAQ) Will replacing my own battery void Apple's warranty? Short answer: Â Yes, for most cases. But there are important nuances:
Apple's Limited Warranty (1 year) or AppleCare+:  Performing a self-service battery replacement will void the remaining  warranty coverage for your MacBook. If any other component fails later, Apple may refuse free repair or service.
Consumer Law Protection:  In many regions (like the EU, UK, Australia, and some US states), "right to repair" or consumer protection laws may override warranty void clauses. However, you must prove that your battery replacement did not  cause any subsequent damage to claim protection.
Best Practice:  If your MacBook is still under Apple's original warranty or AppleCare+, we strongly recommend using Apple's official battery service  to preserve full coverage.
đĄÂ Note:  The Magnuson-Moss Warranty Act in the U.S. prohibits manufacturers from voiding a warranty simply because an owner used a third-party part or performed self-service, unless they can prove that service directly caused the damage.
How long does a replacement MacBook battery last? A quality replacement battery, when properly used and maintained, should provide:
Cycle Count: Â 300-500 full charge cycles before capacity drops to about 80% of original (similar to original Apple batteries).
Calendar Life: Â 2-4 years of normal use, depending on usage patterns and charging habits.
Key factors affecting lifespan:
Battery Quality: Â Higher-grade cells with proper circuitry last longer.
Usage Patterns: Â Avoiding constant 100% charge and deep discharges helps.
Temperature: Â Keeping your MacBook cool extends battery life significantly.
Regular Calibration:  Performing the battery calibration steps  outlined in this guide every 2-3 months helps maintain accurate charge reporting.
đ Always choose batteries with warranties of 12 months or longer  as an indicator of the manufacturer's confidence in their product.
Can I use my MacBook while plugged in without the battery installed? â ď¸Â Not Recommended & Potentially Harmful:
Technically,  most Intel-based MacBooks will power on and run with only the AC adapter connected and the battery removed. However, this is not safe or advisable for normal operation:
Power Surge Risk: Â The battery acts as a built-in uninterruptible power supply (UPS). Without it, even a momentary power flicker or disconnection will cause an immediate, forced shutdown, which can corrupt data or damage the SSD.
Unstable Voltage: Â The battery helps regulate and smooth out the power delivery from the adapter. Running without it may expose internal components to unstable voltage.
Modern Mac Limitation:  Most Macs with Apple Silicon (M1, M2, M3 chips) and some newer Intel models will not power on at all  without a functioning battery connected, as the system expects it as part of the power circuit.
Designed as a System: Â macOS and the hardware are designed to work with the battery as an integral component. Features like Power Nap, instant wake, and certain power management functions will not work correctly.
Bottom Line: Â Only run your MacBook without a battery temporarily during the replacement process for testing purposes. For daily use, always have a properly installed, functional battery in the system.
