1. What is a Battery Health Check Calculator?

Definition: This calculator estimates the remaining health 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:

• \( Health \) — Remaining 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 Check

Details: Regular battery health checks help prevent unexpected power issues, optimize battery life, and determine when replacement is needed.

4. Using the Calculator

Tips: Enter the current maximum capacity and original capacity of your battery in milliamp-hours (mAh). Both values must be > 0.

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 or use diagnostic apps. For laptops, use powercfg (Windows) or coconutBattery (Mac).

Q3: Where can I find the original capacity?
A: Check device specifications, manufacturer documentation, or battery labels.

Q4: How often should I check battery health?
A: For frequently used devices, checking every 3-6 months is recommended.

Q5: Can this calculator be used for all battery types?
A: Yes, it works for any rechargeable battery (lithium-ion, NiMH, etc.) as long as you know the capacity values.