GoKawiilApple details how to check iPhone battery health and signs of wear
Apple's battery diagnostics, found under Settings > Battery > Battery Health, show whether a battery is 'Normal' or 'Significantly Degraded' along with cycle count and maximum capacity relative to when new. Apple considers a battery worn out once capacity falls below 80%, recommending replacement at that point. Additional warning signs include rapid percentage drops, unexpected shutdowns, sluggish performance under heavy use, overheating when idle, and physical battery bulging, the last of which warrants immediate contact with Apple Support.
GoKawiil's interpretation of the reporting above, not reported fact.
Tracking these metrics could help users decide when to service or replace a battery before performance issues or safety hazards like swelling occur. It may also inform purchasing decisions, such as whether to buy AppleCare, based on how quickly a person's usage patterns degrade battery health.
- Battery Health status can be checked via Settings > Battery > Battery Health.
- Apple considers a battery worn out once capacity drops below 80% of original.
- Physical bulging is a safety hazard requiring immediate contact with Apple Support.
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See Anker 737 Power Bank on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: engadget.com — Yoni Yardeni, 2026-09-28
Published there as: “The warning signs that your iPhone battery needs to be replaced”
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