1. What is Battery Capacity?

Battery capacity is a measure of the charge stored in a battery, typically measured in ampere-hours (Ah). For a 24 kWh solar battery system, the actual capacity in Ah depends on the battery voltage.

2. How the Calculation Works

The calculator uses the formula:

Where:

• 24 kWh — Total energy storage capacity
• 1000 — Conversion factor from kWh to Wh
• Battery Voltage — The nominal voltage of your battery bank

Explanation: This converts the energy capacity (kWh) to charge capacity (Ah) based on the battery voltage.

3. Importance of Battery Capacity

Details: Knowing your battery capacity in Ah helps with system design, charge controller selection, and understanding how long your system can power loads.

4. Using the Calculator

Tips: Enter your battery bank's nominal voltage (e.g., 12V, 24V, 48V). Common solar battery voltages are 12V, 24V, or 48V for residential systems.

5. Frequently Asked Questions (FAQ)

Q1: Why convert kWh to Ah?
A: Many battery specifications and charge controllers use Ah ratings, making this conversion useful for system design.

Q2: What's a typical voltage for solar batteries?
A: Common voltages are 12V, 24V, or 48V. Higher voltages are more efficient for larger systems.

Q3: Does this account for depth of discharge?
A: No, this is total capacity. For usable capacity, multiply by your recommended depth of discharge (e.g., 80%).

Q4: How does battery type affect this?
A: The calculation works for any battery type (lead-acid, lithium, etc.) as long as you know the nominal voltage.

Q5: Can I use this for multiple batteries?
A: Yes, if batteries are wired in series, use the total system voltage. If in parallel, use the individual battery voltage.