1. What is Battery Capacity?

Battery capacity is a measure of the charge stored in a battery, typically measured in ampere-hours (Ah). It helps determine how long a battery can power your home solar system.

2. How Does the Calculator Work?

The calculator uses the basic battery capacity formula:

Where:

• \( Wh \) — Watt-hours (energy consumption)
• \( V \) — Voltage of the battery system

Explanation: The formula converts energy (watt-hours) to charge (ampere-hours) by dividing by the system voltage.

3. Importance of Battery Capacity Calculation

Details: Proper battery sizing is crucial for solar systems to ensure adequate energy storage and prevent system failures during low sunlight periods.

4. Using the Calculator

Tips: Enter your home's daily energy consumption in watt-hours and your battery bank's voltage. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between Wh and Ah?
A: Watt-hours measure energy (power × time), while ampere-hours measure charge (current × time). They're related by voltage (Wh = Ah × V).

Q2: How do I find my home's Wh consumption?
A: Check your electricity bill for daily kWh usage (multiply by 1000 to get Wh), or use an energy monitor.

Q3: What voltage should I use?
A: Common solar battery voltages are 12V, 24V, or 48V. Use the voltage of your battery bank.

Q4: Should I oversize my battery?
A: Typically add 20-30% capacity to account for inefficiencies and battery degradation over time.

Q5: How does this relate to solar panel sizing?
A: Battery capacity determines storage, while panel sizing determines charging capability. Both need to be balanced.