1. What is mAh Calculation?

The mAh (milliampere-hour) calculation converts solar energy production (in watt-hours) to battery capacity at a specific voltage. This helps determine what size battery you need to store solar energy.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Solar\ Wh \) — Solar energy production in watt-hours
• \( V \) — Battery voltage
• 1000 — Conversion factor from Ah to mAh

Explanation: The formula converts energy (Wh) to charge capacity (mAh) by accounting for the battery voltage.

3. Importance of mAh Calculation

Details: Proper battery sizing ensures your solar system can store enough energy to meet your needs during periods without sunlight.

4. Using the Calculator

Tips: Enter solar production in watt-hours and battery voltage in volts. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why convert Wh to mAh?
A: Battery capacity is typically rated in mAh, while solar production is measured in Wh. This conversion helps match solar production to battery storage.

Q2: What's a typical solar Wh production?
A: A 100W solar panel produces about 300-500Wh per day depending on sunlight conditions.

Q3: What voltages are common for batteries?
A: Common voltages include 3.7V (Li-ion), 12V (lead-acid), and 24V (larger systems).

Q4: Does this account for efficiency losses?
A: No, actual usable capacity will be less due to charging/discharging inefficiencies (typically 80-90% of calculated value).

Q5: How does this relate to battery runtime?
A: Runtime depends on load current. A 1000mAh battery can theoretically power a 100mA load for 10 hours.