Should You Replace Your EV Battery or Scrap the Car?
As electric vehicles age, their battery capacity degrades, reducing driving range. When the range drops significantly, you face a key decision: pay for a replacement battery or sell/scrap the car. This calculator helps you compare the financial outcome of each option.
How the Calculation Works
The net ROI of replacement = residual car value after replacement + total fuel savings from remaining miles β battery cost. If this ROI exceeds what you would get from scrapping the car today (typically 5β15% of current market value), replacement is the smarter financial move. Fuel savings are estimated from the difference in per-mile cost between EV operation and a comparable gasoline vehicle.
Frequently Asked Questions
Refurbished or used batteries can cost 30β60% less than new OEM batteries, but come with less warranty protection and potentially shorter lifespan. Factor this into your cost calculation.
A fresh battery significantly increases resale value. Make sure to input a realistic post-replacement market value that reflects the improved condition and remaining warranty.
Example: Gas vehicle at 30 MPG with $3.50/gal = $0.117/mi. EV at 4 mi/kWh with $0.13/kWh = $0.033/mi. Savings = approximately $0.08 per mile.