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How long does a car battery last?
How Long Does a Car Battery Last? Learn how long a typical car battery can last, what factors affect its lifespan, and the common signs that it may need to be replaced.
1 Answer
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September 28, 2026 · 7:03 am
A standard car battery lasts between 3 and 5 years, with the average lead-acid battery lasting approximately 4 years before requiring replacement. Modern Absorbent Glass Mat (AGM) batteries typically last 4 to 7 years, whereas traditional Flooded Lead-Acid (FLA) batteries degrade faster in high-heat climates, often failing after 2 to 3 years.
Life Expectancy by Battery Technology
Choosing the correct battery chemical construction significantly impacts lifespan, charge-cycle capacity, and resistance to environmental stress.
Battery Type Average Lifespan Deep-Cycle Resistance Vibration / Heat Tolerance Typical Cost
Flooded Lead-Acid (FLA) 3 – 5 Years (2–3 in hot climates) Low (Suffer from sulfation if drained) Moderate $80 – $150
Absorbent Glass Mat (AGM) 4 – 7 Years High (Supports Start-Stop systems) High (Vibration-resistant) $180 – $300
Enhanced Flooded Battery (EFB) 3 – 6 Years Moderate to High Moderate $130 – $220
Lithium-Ion (LiFePO4) 8 – 12+ Years Extremely High High $400 – $1,000+