The national cost for a battery replacement (avg price) in 2022 is between $110 and $225 with an average of $157

Save 10-40% on your vehicle maintenance and repair. We can guarantee that any service you book through us will cost you less than any retail price you can find.​

In Ashburn, people who book through CarAdvise save $42 on average for Battery Replacement. Lock in this price now.

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National average cost of a Battery Replacement
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What is a car battery and how does it work?

A car battery provides electrical power to start your vehicle. It also powers all of the electronics on board until the engine is running. When you activate the ignition, the starter pulls power from the battery to start the engine. In the process, the starter depletes the battery slightly. Once the engine is running, however, the alternator (a generator attached to the engine) recharges the battery and takes over all of the other electrical functions. The battery also acts as a buffer to the electrical system in the case of a power surge or excessive current draw. Note: this is not the same component as the high-voltage battery found in an electric or hybrid vehicle.

When should a car battery be replaced?

A fully-charged car battery should measure 12.6 volts at rest. If the battery consistently falls below that measure, it likely needs to be replaced. Actually, a battery that tests below 12 volts is considered a “dead” battery. When that is the case, you may notice the following signs

Your engine may not turn over when you try to start it

You may hear only a “clicking” sound when you try to start your engine

The battery light may be illuminated on the dash display

A test with a voltmeter or ammeter may show abnormal readings

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How is this service performed

How is a Battery Replacement done?

To replace a car battery, a mechanic will first install a temporary power source to preserve the computer memory of your navigation, audio, engine management, and other electronic systems. With the electronics safeguarded, the technician will disconnect the negative terminal from the battery, followed by the positive cable. The battery tie down device is loosened, and the old battery is removed and discarded according to state and local regulations. The cable ends and wires are carefully inspected for signs of corrosion or other damage before the new battery is installed, strapped down, connected, and dressed with an anti-corrosion compound. At this point, some vehicles may require programming of the Powertrain Control Module (PCM). Finally, your vehicle is started and the output of the charging system is tested.

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