1. What is Battery Health?

Battery health percentage indicates how much charge your battery can hold compared to its original capacity when new. It's a key metric for understanding your laptop battery's condition and remaining lifespan.

2. How Does the Calculator Work?

The calculator uses the battery health formula:

Where:

• Current Capacity — Your battery's current maximum charge capacity
• Design Capacity — The battery's original maximum capacity when new

Explanation: The formula compares your battery's current maximum charge to its original capacity to determine what percentage of its original capacity remains.

3. Importance of Battery Health

Details: Monitoring battery health helps predict when you might need to replace your battery, understand performance changes, and maintain optimal charging habits.

4. Using the Calculator

Tips: Enter both current and design capacity in milliamp-hours (mAh). These values can typically be found in Windows 10 battery reports or manufacturer specifications.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my battery's current capacity on Windows 10?
A: Generate a battery report by opening Command Prompt as admin and running "powercfg /batteryreport". Look for "FULL CHARGE CAPACITY".

Q2: What is a good battery health percentage?
A: 80-100% is excellent, 60-80% is fair, below 60% means you should consider replacing the battery soon.

Q3: How often should I check battery health?
A: Every 3-6 months for regular monitoring, or when you notice significantly reduced battery life.

Q4: Can I improve my battery health?
A: Avoid extreme temperatures, don't keep it fully charged all the time, and avoid complete discharges when possible.

Q5: Why does my battery health decrease over time?
A: All lithium-ion batteries degrade with charge cycles, temperature exposure, and age due to chemical changes inside the battery.