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🔋 “Phone Battery Not Charging Past 80%? Here’s Why (and How to Fix It)”

Modern phones like iPhones, Pixels, and Samsung Galaxy models include smart battery management features—but sometimes, they leave users confused when the charge refuses to go past 80%.

At Boston Mobile Phone Repairs, we see this issue all the time. Here’s what’s happening and how you can fix it.

⚙️ Common Reasons Why Your Battery Stops Charging at 80%

  • Optimized Battery Charging (to prevent overheating and extend battery life)

  • Excessive Heat causing the charging system to pause

  • Faulty charging cable or adapter

  • Background apps draining power while charging

  • Battery calibration errors

âś… What You Can Do

1. Turn Off Optimized Charging

  • iPhone: Settings → Battery → Battery Health & Charging → Toggle off “Optimized Battery Charging”

  • Android: Settings → Battery → Adaptive Charging → Turn off

2. Cool Down Your Phone

Avoid charging in hot areas or direct sunlight. High temperature can cause charging to stop temporarily.

3. Use Original Charger

Using low-quality or non-certified chargers can limit charging capacity and even damage the battery.

4. Restart or Reset Battery Stats

Restarting your phone can often fix software glitches that prevent full charging.

5. Check for Software Updates

Some system updates include battery calibration fixes.

đź§° When to Visit a Repair Shop

If your phone still won’t charge past 80% despite trying all the steps above, the issue might be hardware-related:

  • Damaged charging port

  • Failing battery cell

  • Power IC (charging chip) malfunction

Bring your phone to Boston Mobile Phone Repairs for a professional inspection.
We offer:

  • 🔋 Battery replacement

  • ⚡ Charging port repair

  • đź§  Diagnostic testing


📍 Boston Mobile Phone Repairs

Tags :
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