1. What is Battery Health Calculation?

The battery health calculation estimates the current capacity of your laptop battery compared to its original designed capacity. It helps determine if your battery is performing as expected or needs replacement.

2. How Does the Calculator Work?

The calculator uses the battery health formula:

Where:

• \( Measured\ Discharge\ Rate \) — Current discharge rate of your battery (mA)
• \( Expected\ Rate \) — Original discharge rate when new (mA)

Explanation: The equation compares your battery's current performance to its original specifications to determine health percentage.

3. Importance of Battery Health Monitoring

Details: Regular battery health checks help predict remaining lifespan, prevent unexpected shutdowns, and determine optimal replacement time.

4. Using the Calculator

Tips: Enter both measured and expected discharge rates in milliamps (mA). Values must be greater than 0. For best results, measure discharge rate when battery is between 20-80% charge.

5. Frequently Asked Questions (FAQ)

Q1: What is a good battery health percentage?
A: Above 80% is good, 60-80% indicates aging, below 60% suggests significant degradation and likely need for replacement.

Q2: How often should I check battery health?
A: Every 3-6 months for regular monitoring, or whenever you notice significantly reduced battery life.

Q3: Where can I find expected discharge rate?
A: Check your laptop specifications or battery label. It's often listed as "design capacity" in mAh (milliampere-hours).

Q4: Why does my battery health decrease over time?
A: Battery capacity naturally degrades with charge cycles, age, temperature exposure, and usage patterns.

Q5: Can I improve my battery health?
A: While you can't reverse degradation, you can slow it by avoiding extreme temperatures, not keeping at 100% charge for long periods, and reducing heavy usage while on battery.