MacBook Air 15" M2 A2941 (2023) Battery Replacement
Compatible models: A2941, EMC 8103
The MacBook Air 15-inch M2 was Apple's first 15-inch MacBook Air, released in 2023 with the largest battery of any Air at 66.5Wh. The bigger display draws more power than the 13-inch version, and Apple balanced this with the larger cell to maintain the 18-hour claimed runtime. Zoom calls, streaming, external display use and Continuity Camera all increase real-world consumption. A degraded battery on the 15-inch is particularly noticeable because the screen is always on and demanding attention, and the gap from 18 hours to 6 or 8 is impossible to ignore.
- Turnaround: Same day where possible, subject to stock and workload
- 6-month warranty on the replacement battery
- Walk-in near Liverpool Street Station or use our UK mail-in service
Signs your MacBook Air 15" M2 battery may need replacing
The M2 chip is efficient, but the 15-inch display is a persistent drain in a way the 13-inch is not. Users who rely on the larger screen for presentations, video work or split-screen productivity find their battery health declining faster than colleagues using the 13-inch version.
- Battery draining significantly faster than it used to
- Device shutting down unexpectedly, particularly at lower charge percentages
- Only running reliably when connected to power throughout the day
- Battery percentage dropping suddenly or behaving inconsistently
- MacBook running warmer than usual during normal tasks
- Screen lifting slightly from the chassis (can indicate a swollen battery, book as soon as possible)
- Fan-less design running noticeably warmer than usual during everyday tasks, suggesting the battery is under more thermal stress than it should be
- Go to Apple Menu > About This Mac > System Information > Power, then check Cycle Count and Condition
What is included
- Safe removal of the bottom case and existing battery
- Fitting of a quality replacement 66.5Wh battery cell
- Post-repair charging and power stability checks
- Full function test covering power, MagSafe 3 charging, keyboard, trackpad and display
- 6-month warranty on the replacement battery
How to confirm your model
Go to Apple Menu > About This Mac > System Report > Hardware Overview to check your model identifier.
This repair covers: A2941, EMC 8103.
The model number is also printed on the underside of the machine near the hinge. If you are unsure, bring the MacBook in and we will confirm the model before starting any work.
The A2941 uses MagSafe 3 for primary charging and supports charging through either USB-C Thunderbolt port. If you are unsure whether your machine is the M2 or M3 15-inch, the model identifier in About This Mac will confirm it.
Our repair process
- Book or drop in: Book online or visit us near Liverpool Street Station. Mail-in customers can send their MacBook from anywhere in the UK by tracked post.
- Assessment: We inspect the machine before starting. If we find anything unexpected, we tell you before proceeding.
- Battery replacement: We remove the bottom case, extract the old battery and fit the replacement, then reassemble and reseal carefully.
- Testing: Full post-repair checks covering power, charging and all core functions before the machine is returned.
- Collect or return post: Pick up in store or we return your MacBook by secure tracked post.
Why choose Square Repair?
- Established repair centre near Liverpool Street since 2015
- 6-month warranty on every battery replacement
- No data loss, battery replacement is a hardware-only procedure
- Post-repair testing before handover on every job
- Transparent pricing with no hidden charges
- Walk-in and UK mail-in options available
Before you book
- If the chassis is bent or the machine has been previously opened, we will advise on any complications before starting
- If there has been liquid exposure, a battery replacement may not resolve all issues. We confirm our findings before proceeding
- If the screen is lifting slightly from the chassis, book as soon as possible. This can indicate a swollen battery that needs urgent attention
- If the machine is completely dead, we carry out a diagnosis before confirming the repair
Related MacBook Air 15" M2 repairs
- All MacBook Air 15" M2 repairs
- Book your battery replacement
- How our repair service works
- MacBook diagnosis service
Book your repair
Walk-ins are welcome during opening hours near Liverpool Street Station. For mail-in repairs, place your order online so we can track your MacBook from arrival. Any questions about the battery options for your MacBook Air 15" M2? Contact us and we will help.