kWh (Battery Capacity)
Definition
Kilowatt-hours — the unit measuring an EV battery's total energy storage capacity. A larger kWh battery provides more range (e.g., 60 kWh ≈ 230 miles).
Why is kWh (Battery Capacity) Important?
As electric vehicles transform transportation across the United States, understanding kWh (Battery Capacity) is essential for making informed EV ownership decisions. Whether you are comparing models, planning road trips, or evaluating long-term savings, this concept directly impacts your EV experience and total cost of ownership.
Our EV calculators help you quantify these factors, enabling confident comparisons between electric and gas vehicles and optimizing your charging strategy for maximum efficiency and savings.
What is kWh (Battery Capacity)?
Kilowatt-hours (kWh) measures an EV battery's total energy storage capacity. A larger kWh battery stores more energy and generally provides more range. It is the EV equivalent of a gas tank's gallons — the bigger the "tank," the farther you can go.
Battery Size Comparison
| Vehicle | Battery (kWh) | EPA Range | Efficiency (mi/kWh) |
|---|---|---|---|
| Nissan Leaf S | 40 kWh | 149 mi | 3.73 |
| Chevrolet Bolt EV | 65 kWh | 259 mi | 3.98 |
| Tesla Model 3 SR+ | 60 kWh | 272 mi | 4.53 |
| Tesla Model 3 LR | 82 kWh | 358 mi | 4.37 |
| Ford F-150 Lightning | 131 kWh | 320 mi | 2.44 |
| Hummer EV | 212 kWh | 329 mi | 1.55 |
Battery Capacity vs Range
A bigger battery doesn't always mean more range. Efficiency (mi/kWh) matters equally:
- Tesla Model 3: 60 kWh battery, 4.5 mi/kWh → 272 miles
- Hummer EV: 212 kWh battery, 1.55 mi/kWh → 329 miles
- The Hummer has 3.5× the battery but only 1.2× the range (because it weighs 9,000 lbs)