1. What is a Battery Health Calculator?

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

Purpose: It helps users determine how much their battery has degraded over time and when it might need replacement.

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 Calculation

Details: Monitoring battery health helps prevent unexpected device shutdowns, improves performance, and indicates when battery replacement is needed.

4. Using the Calculator

Tips: Enter both current and original capacities in milliampere-hours (mAh). Current capacity should be ≤ original capacity.

5. Frequently Asked Questions (FAQ)

Q1: What is considered good battery health?
A: Typically 80% or above is good. Below 80% may indicate significant degradation.

Q2: How do I find my battery's current capacity?
A: On smartphones, check battery settings. For laptops, use diagnostic tools. For other batteries, specialized testing equipment may be needed.

Q3: Why does battery health decrease over time?
A: Battery capacity naturally degrades due to chemical aging, charge cycles, temperature exposure, and usage patterns.

Q4: Can battery health improve?
A: No, battery degradation is irreversible. Health percentage will only decrease over time.

Q5: When should I replace my battery?
A: Consider replacement when health drops below 80% or you notice significantly reduced usage time.