Is Your iPhone Battery Below 80%?
It's Time to Replace It.
Learn how to check your battery health in 30 seconds — and why waiting too long can damage your iPhone. Same-day battery replacement in Miami.
BOOK BATTERY REPLACEMENT →What's Your Battery Health?
Drag the slider to your iPhone's Maximum Capacity and see what it means.
Why 80% Is the Magic Number
Every iPhone battery wears down with use. Apple considers a battery degraded once its Maximum Capacity drops below 80% — at that point it can no longer deliver peak power, and iOS may slow down your phone to prevent unexpected shutdowns. If your battery reads 79% or lower, a replacement is the fix — not a new phone.
Check Your Battery Health in 30 Seconds
No apps, no tools — it's built right into your iPhone.
Open Settings
Tap the Settings app (gray gear icon) on your home screen.
Go to Battery
Scroll down and tap Battery, then Battery Health & Charging.
Read Maximum Capacity
Check the Maximum Capacity percentage. Below 80%? Time for a new battery.
What Happens If You Don't Replace It
Ignoring a worn battery doesn't just mean shorter battery life — it can damage the rest of your iPhone.
⚡ Unexpected Shutdowns
A degraded battery can't deliver enough power during demanding moments, so your iPhone shuts off without warning — even at 30% or 40% charge.
🐢 Performance Throttling
iOS automatically slows down your processor to protect a weak battery. Apps lag, the camera stutters, and everything feels old.
🎈 Battery Swelling
Old batteries can swell, pushing the screen out of its frame and damaging the display, back glass, or internal components — turning a small battery fix into a much bigger repair.
🔥 Overheating Risk
A failing battery works harder and runs hotter, stressing the logic board and, in extreme cases, becoming a safety hazard.
Don't Wait for a Swollen Battery
CarlosRepair replaces iPhone batteries the same day, with a 90-day warranty — and we come to you, anywhere in Miami.
BOOK BATTERY REPLACEMENT →