1. What is Battery Health Percentage?

Battery health percentage indicates how much of the original capacity your battery can still hold compared to when it was new. It's a key metric for understanding battery degradation over time.

2. How Does the Calculator Work?

The calculator uses the battery health formula:

Where:

• \( Current\ Capacity \) — Current maximum charge the battery can hold (mAh)
• \( Maximum\ Capacity \) — Original capacity when the battery was new (mAh)

Explanation: The formula compares the current maximum charge capacity to the original capacity to determine what percentage of the original capacity remains.

3. Importance of Battery Health

Details: Monitoring battery health helps predict remaining lifespan, plan for replacements, and understand device performance limitations. Batteries typically need replacement when health drops below 80%.

4. Using the Calculator

Tips: Enter both current and maximum capacities in milliamp-hours (mAh). Current capacity should be less than or equal to maximum capacity. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is considered good battery health?
A: Above 80% is generally good. Below 80% may indicate significant degradation and reduced performance.

Q2: How often should I check battery health?
A: For frequently used devices, checking every 3-6 months is reasonable to monitor degradation trends.

Q3: Can battery health improve over time?
A: No, battery health typically only degrades over time and usage, though calibration might temporarily affect readings.

Q4: Why does my device show different health percentage?
A: Device manufacturers may use proprietary algorithms that consider additional factors beyond simple capacity measurements.

Q5: How can I extend my battery's health?
A: Avoid extreme temperatures, don't regularly drain to 0%, and avoid keeping at 100% charge for extended periods.