1. What is a Wh per Litre Calculator?

Definition: This calculator determines the energy density in watt-hours per litre (Wh/L) by dividing total energy by volume.

Purpose: It helps compare energy storage efficiency of different systems, particularly useful for batteries and fuel cells.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Wh/L — Energy density (watt-hours per litre)
• Total Wh — Total energy capacity in watt-hours
• Volume — Volume in litres

Explanation: The formula calculates how much energy is stored per unit volume, a key metric for energy storage systems.

3. Importance of Wh per Litre Calculation

Details: Energy density measurements are crucial for designing compact energy storage systems and comparing different technologies.

4. Using the Calculator

Tips: Enter the total energy in watt-hours and volume in litres. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a good Wh/L value for batteries?
A: Lithium-ion batteries typically range 200-400 Wh/L, while lead-acid batteries are around 80-100 Wh/L.

Q2: How does this compare to Wh/kg?
A: Wh/L measures volumetric energy density, while Wh/kg measures gravimetric (weight-based) energy density.

Q3: When would I use this calculation?
A: When designing systems where space is more constrained than weight, like portable electronics or electric vehicles.

Q4: How do I find total Wh for a battery?
A: Multiply battery voltage (V) by amp-hour capacity (Ah). For example, 12V 100Ah = 1200Wh.

Q5: Does this include packaging volume?
A: For accurate comparisons, measure either just the active material volume or the complete packaged volume consistently.