1. What is iPhone Battery Capacity?

Battery capacity measures how much charge a battery can hold, typically measured in milliampere-hours (mAh). For iPhones, this helps determine how long your device can run before needing a recharge.

2. How Does the Calculator Work?

The calculator uses the battery capacity equation:

Where:

• \( Screen\ Time \) — Total active screen time in hours
• \( Average\ Current \) — Average current draw in milliamps

Explanation: The equation calculates total battery capacity by multiplying the active usage time by the average current draw during that period.

3. Importance of Battery Capacity Calculation

Details: Knowing your iPhone's battery capacity helps assess battery health, predict usage time, and determine when a battery replacement might be needed.

4. Using the Calculator

Tips: Enter screen time in hours and average current in mA. Both values must be positive numbers. For typical iPhones, average current ranges from 200-500mA during normal use.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical iPhone battery capacity?
A: iPhone batteries range from about 1800mAh (older models) to 4000mAh+ (newer Pro Max models).

Q2: How accurate is this calculation?
A: It provides a rough estimate. Actual capacity varies with battery health, temperature, and usage patterns.

Q3: Where can I find average current data?
A: Use battery diagnostic apps or check Xcode's energy logs for detailed current measurements.

Q4: Does this account for standby time?
A: No, this calculates capacity based on active screen time only. Standby current is much lower.

Q5: How does this relate to battery health percentage?
A: Battery health compares current maximum capacity to original capacity when new.