1. What is Electric Car Battery Capacity?

Battery capacity in electric vehicles (EVs) refers to the total amount of energy the battery can store, typically measured in kilowatt-hours (kWh). It directly affects the vehicle's range and performance.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( Range \) — Electric car range in kilometers
• \( Efficiency \) — Energy consumption in watt-hours per kilometer
• \( 1000 \) — Conversion factor from Wh to kWh

Explanation: The formula converts the energy consumption rate (Wh/km) into total energy storage (kWh) needed to achieve the specified range.

3. Importance of Battery Capacity Calculation

Details: Understanding battery capacity helps in comparing electric vehicles, estimating charging costs, and planning trips. It's also crucial for vehicle design and energy management.

4. Using the Calculator

Tips: Enter the vehicle's advertised range in kilometers and its energy efficiency in Wh/km (often available in specifications or real-world tests). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical battery capacity for EVs?
A: Most modern EVs have capacities between 40-100 kWh, with some high-end models exceeding 100 kWh.

Q2: How does temperature affect battery capacity?
A: Cold temperatures can temporarily reduce available capacity by 10-30% due to increased internal resistance.

Q3: What factors affect energy efficiency?
A: Speed, driving style, terrain, climate control use, and external temperature all significantly impact Wh/km.

Q4: Why convert from Wh to kWh?
A: Battery capacities are conventionally expressed in kWh (1 kWh = 1000 Wh), the standard unit for energy billing.

Q5: How accurate is this calculation?
A: It provides a theoretical maximum. Real-world range may vary due to driving conditions and battery degradation.