1. What is Battery Health Calculation?

The battery health percentage indicates how much of the original battery capacity remains. It compares the current maximum charge capacity (Energy Full) to the original design capacity (Energy Design) of your laptop battery.

2. How Does the Calculator Work?

The calculator uses the battery health formula:

Where:

• \( Energy\ Full \) — Current maximum charge capacity in milliwatt-hours
• \( Energy\ Design \) — Original design capacity in milliwatt-hours

Explanation: The formula calculates what percentage of the original battery capacity remains available for use.

3. Importance of Battery Health Monitoring

Details: Regular battery health checks help determine when a battery replacement might be needed. Batteries typically degrade over time and with charge cycles.

4. Using the Calculator

Tips: Enter both Energy Full and Energy Design values in milliwatt-hours (mWh). These values can be found in Windows 10 battery report (generated via powercfg /batteryreport command).

5. Frequently Asked Questions (FAQ)

Q1: Where can I find Energy Full and Energy Design values?
A: Generate a battery report in Windows 10 using "powercfg /batteryreport" command in Command Prompt, then look for these values in the report.

Q2: What is a good battery health percentage?
A: Above 80% is considered good. Below 60% may indicate significant degradation and reduced battery life.

Q3: How often should I check my battery health?
A: Every 3-6 months is recommended for regular monitoring of battery degradation.

Q4: Can I improve my battery health?
A: While you can't reverse degradation, avoiding extreme temperatures and full discharge cycles can slow further degradation.

Q5: When should I consider replacing my battery?
A: When health drops below 60% or you notice significantly reduced usage time between charges.