1. What is Battery Health Percentage?

The Battery Health Percentage indicates the current maximum capacity of your iPhone's battery compared to when it was new. It helps determine how much your battery has degraded over time.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( Current\ Max\ Capacity \) — Current maximum capacity of your battery in milliamp-hours (mAh)
• \( Design\ Capacity \) — Original capacity of your battery when new (mAh)

Explanation: The formula calculates what percentage of your original battery capacity remains available.

3. Importance of Battery Health

Details: Monitoring battery health helps determine when to replace your iPhone battery. Apple recommends replacement when health falls below 80%.

4. Using the Calculator

Tips: Enter both current maximum capacity and design capacity in milliamp-hours (mAh). You can find these values in battery information apps or through diagnostic tools.

5. Frequently Asked Questions (FAQ)

Q1: Where can I find my iPhone's current max capacity?
A: Use apps like CoconutBattery (Mac) or iMazing (Windows/Mac) to check your battery's current maximum capacity.

Q2: What's the typical design capacity for iPhones?
A: Design capacity varies by model. For example: iPhone 13 ~3,227 mAh, iPhone 12 ~2,815 mAh, iPhone 11 ~3,110 mAh.

Q3: Is 85% battery health good?
A: 85% is normal after about 1-2 years of use. Below 80% may require replacement for optimal performance.

Q4: How accurate is this calculation?
A: It's accurate if you have correct current and design capacity values. iPhone's built-in battery health uses similar calculations.

Q5: Can I improve my battery health percentage?
A: No, battery degradation is irreversible, but you can slow further degradation with proper charging habits.