How long EV batteries last

Here is what the Department of Energy's consumer sites say about EV battery life:

From All-Electric Vehicles (fueleconomy.gov), Maintenance and Safety of Electric Vehicles (Alternative Fuels Data Center) and Batteries for Electric Vehicles (Alternative Fuels Data Center), read November 9, 2026.

The AFDC adds that comprehensive data on EV battery failures is not available, and that only a small number of EVs in the U.S. have approached the end of their useful lives so far. A battery with at least 70% of its capacity left can still be useful; the AFDC says end-of-life EV batteries are technically feasible for second uses such as stationary grid and backup power.

EV battery warranties

The Alternative Fuels Data Center says many manufacturers offer 8-year/100,000-mile warranties for their EV batteries, and suggests checking with the dealer about battery life and warranties and considering the manufacturer's battery recycling policy.

Coverage terms can differ by automaker and model year, so read the warranty booklet for the exact vehicle. Manufacturers typically do not publish replacement battery prices; the AFDC says a replacement outside the warranty is expected to be a significant expense, though battery prices are expected to decline as technology improves and production grows.

From Maintenance and Safety of Electric Vehicles (Alternative Fuels Data Center), read November 9, 2026.

Hybrid and EV battery types

The AFDC says most of today's all-electric vehicles and plug-in hybrids use lithium-ion batteries, which offer high energy for their size and weight, long life and low self-discharge. Nickel-metal hydride batteries have been widely used in regular hybrids; the AFDC notes they have a much longer life cycle than lead-acid batteries and are safe and abuse-tolerant.

Electric drive vehicles also carry a separate low-voltage auxiliary battery that powers accessories. For that battery, see how long car batteries last.

From Batteries for Electric Vehicles (Alternative Fuels Data Center) and How Do Hybrid Electric Cars Work? (Alternative Fuels Data Center), read November 9, 2026.

How to look after an EV battery

Fueleconomy.gov says the automaker knows how to operate and maintain your vehicle to maximize fuel economy, driving range and battery life, so the owner's manual is the place to look for tips specific to your vehicle, including the best charging advice.

The AFDC notes that some automotive battery systems use liquid coolant to keep the battery at safe operating temperatures, and these systems may require regular checks. On all-electric vehicles, the battery, motor and associated electronics require little to no regular maintenance.

From Tips for Hybrids, Plug-in Hybrids, and Electric Vehicles (fueleconomy.gov) and Maintenance and Safety of Electric Vehicles (Alternative Fuels Data Center), read November 9, 2026.

Checking the battery on a used EV or hybrid

Before you buy, ask for the vehicle's original battery warranty terms and in-service date so you know how much coverage may remain, and read the owner's manual section on the high-voltage battery. Have the vehicle inspected, and run the VIN through a recall check (see how to check a used car for recalls).

For general used-car checks, see what to look for when buying a used car and how many miles is too many.

Service at Elgin Auto Sales & Service Center

Have questions about a vehicle? Schedule service or see our service specials.

Our service department at 1200 E. Chicago St. in Elgin is open Monday to Friday 8 a.m. to 5 p.m. and Saturday 8 a.m. to 4 p.m., and is closed Sunday. Get directions.