1. What is a Battery Health Calculator?

Definition: This calculator estimates the remaining health of a laptop battery by comparing its current capacity to its original capacity.

Purpose: It helps users determine how much their battery has degraded and when they might need to consider replacing it.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Health \) — Battery health percentage
• \( Current\ capacity \) — Current maximum charge capacity (mAh)
• \( Original\ capacity \) — Original maximum charge capacity (mAh)

Explanation: The current capacity is divided by the original capacity to get a ratio, then multiplied by 100 to convert to percentage.

3. Importance of Battery Health Monitoring

Details: Regular health checks help maintain optimal performance, predict battery lifespan, and prevent unexpected shutdowns.

4. Using the Calculator

Tips: Enter the current maximum capacity and original capacity in milliamp-hours (mAh). Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my battery's current capacity?
A: On Windows, use powercfg /batteryreport. On Mac, check System Information > Power.

Q2: Where can I find the original capacity?
A: Check the battery label, manufacturer specifications, or the original purchase documentation.

Q3: What percentage indicates a bad battery?
A: Generally below 80% health means significant degradation and may require replacement.

Q4: How often should I check battery health?
A: Every 3-6 months for regular monitoring, or when you notice reduced battery life.

Q5: Can battery health improve over time?
A: No, battery capacity naturally degrades with use and age, though calibration may temporarily improve readings.