How We Test Laptop Battery Life
We measure real battery life with web browsing and video playback at a fixed 150-nit brightness, so results are comparable across laptops.
What We Measure
- Web browsing battery life
- Video playback battery life
- Productivity battery life
- Light gaming battery life
- Charge time to 80%
How We Test It
We set every laptop to 150 nits and disable adaptive features.
An automated script cycles through web pages and looping video until shutdown.
Charge time is measured from 0 to 80% with the included charger.
How It Affects Scores
Battery scores are based on measured web and video runtime, not manufacturer claims.
Equipment
- Automated browsing script
- Power meter
- Fixed-brightness calibration