1. What is Battery Health?

Battery health is a measure of a battery's current capacity compared to its original capacity when new. It indicates how much the battery has degraded over time and its remaining useful life.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• Current Capacity — The battery's current maximum charge capacity (mAh)
• Original Capacity — The battery's original maximum charge capacity when new (mAh)

Explanation: The formula gives the percentage of original capacity that the battery can still hold.

3. Importance of Battery Health

Details: Monitoring battery health helps determine when to replace batteries, optimize device performance, and prevent unexpected power loss. Most manufacturers recommend replacement when health drops below 80%.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Where can I find my battery's current capacity?
A: On smartphones, check in battery settings. For laptops, use system diagnostics tools. For other batteries, specialized testing equipment may be needed.

Q2: What is considered good battery health?
A: 80-100% is excellent, 60-79% is fair, and below 60% typically indicates the battery needs replacement.

Q3: How often should I check battery health?
A: For frequently used devices, check every 3-6 months. For critical applications, more frequent monitoring may be warranted.

Q4: Does temperature affect battery health?
A: Yes, extreme temperatures (both hot and cold) can accelerate battery degradation.

Q5: Can battery health improve over time?
A: No, battery health only degrades over time. Temporary capacity fluctuations may occur but don't represent true health improvement.