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The iPhone 15 features a built-in rechargeable lithium-ion battery designed for “all-day” usage under typical conditions. It supports fast wired charging via USB-C, as well as wireless charging (MagSafe and Qi).
Capacity: ~ 3,349 mAh (≈ 12.98 Wh) according to regulatory listings. Video playback (offline): Up to 20 hours. Video playback (streamed): Up to 16 hours. Audio playback: Up to 80 hours. Fast-charge capability: Up to ~50% charge in around 30 minutes with a 20 W or higher adapter (sold separately). Wireless charging: MagSafe up to 15 W, Qi up to 7.5 W.