Battery Life Claims vs Reality
Apple advertises up to 24 hours of video playback for the MacBook Pro M4 Max. We put these claims to the test with real-world workloads that mirror actual professional use.
Test Methodology
We ran five distinct workloads on both the 14-inch and 16-inch MacBook Pro M4 models, measuring time from 100% to shutdown. Screen brightness set to 200 nits, Wi-Fi connected.
Web Browsing (Wi-Fi)
Continuous Safari browsing across 20 tabs with auto-refresh every 30 seconds: 14-inch achieved 17.5 hours, 16-inch hit 21.2 hours.
Video Editing (Final Cut Pro)
Rendering and exporting 4K ProRes footage: 14-inch lasted 10.8 hours, 16-inch managed 14.1 hours of continuous editing.
Code Compilation
Building a large Swift project repeatedly: 14-inch survived 13.2 hours, 16-inch reached 16.8 hours before shutdown.
Comparison With Previous Generations
The M4 shows 15-20% improvement over M3 in battery efficiency. The performance-per-watt gains are most visible in sustained workloads like video rendering.
Charging Speed
Both models support fast charging to 50% in 30 minutes via MagSafe 3. The 16-inch model charges slightly faster due to its larger battery accepting higher wattage.
Bottom Line
Real-world battery life falls short of Apple marketing claims but remains best-in-class. The M4 MacBook Pro outlasts any competing Windows laptop in equivalent workloads.
