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Three Years of 80% Charge Limits on iPhone
Since 2023, Apple has implemented an 80% charging limit on its iPhones to enhance battery longevity. A user has experienced firsthand the benefits of this setting across models 15, 16, and 17 Pro Max. After a year with the 80% limit enabled, the iPhone 17 Pro Max retained 97% of its maximum capacity after 277 cycles. While the user notes a decrease in battery stress, they express curiosity about comparing their results against other users maintaining full charge settings.
MonitorConfidence: MediumMid term horizonStory: First report
EvidenceOn record sourcesNo quotes
Published 6 Oct 2026, 20:45 UTC4 min read
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Brief
NewsBite reading:Exploring Three Years of iPhone's 80% Charge Limits
TL;DR
- 80% charge limit introduced to extend iPhone battery lifespan.
- User reports 97% capacity on the iPhone 17 Pro Max after 12 months.
- Comparison of battery capacities between iPhone 15, 16, and 17 Pro Max.
- User managed to keep battery cycles lower by charging less frequently.
- Dynamic charging methods (USB-C vs. MagSafe) were explored.
Interesting facts
- The iPhone 17 Pro Max features improved cooling technology.
- Optimized Battery Charging is recommended for managing battery health.
- User plans to continue using an 80% limit on the upcoming iPhone 18 Pro Max.