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Battery Life Calculator — Car Battery Health Estimate

Estimate your car battery's remaining life based on age, usage patterns, and battery type.

How We Calculate This

How Battery Life Is Estimated

The calculator starts with the expected lifespan for your battery type and adjusts for:

  • Battery type: Standard (~4.5 years), EFB (~5.5 years), AGM (~6.5 years)
  • Usage: Short trips and infrequent use shorten life significantly
  • Climate: Colder climates reduce battery life
  • Start-stop: Increases wear on standard batteries
  • Mileage: Very low mileage reduces charging time

Remaining life = Estimated total life - Current age

Frequently Asked Questions

Last updated: February 2026

All calculations are estimates. Actual figures may vary based on driving conditions, vehicle specifications, and other factors.