iPhone Battery Health Dropping Fast (Stop The Drop)
⚠️ Immediate Fix
Seeing your Maximum Capacity drop rapidly? Stop recalibrating! Heat is the enemy. Immediately stop using the phone while it is on the charger. Turn off "Background App Refresh" and keep the phone cool. The health % is an estimate—ignore small drops unless it falls below 80%.
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Why This Happens
- Heat: Charging while gaming/calling cooks the chemicals.
- Deep Discharge: Letting it hit 0% too often.
- Recalibration: iOS updates often recalculate the real values.
Step-by-Step Fix
- Enable Optimized Charging: Go to Settings > Battery > Battery Health & Charging. Turn ON "Optimized Battery Charging". This stops it from sitting at 100% all night.
- Kill Background Refresh: Go to General > Background App Refresh. Turn it OFF. Apps don't need to update every second.
- Use a 5W Charger Overnight: Fast chargers generate heat. If you charge overnight, use an old, slow 5W brick to keep the battery cool.
- Remove Case While Charging: Thick cases trap heat. If the phone feels hot, take the case off.
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When to Stop
If your Maximum Capacity is below 80%, the battery is chemically aged and degraded. Software tips won't bring it back. You need a $69-$99 battery replacement from Apple to restore peak performance.