The battery life of hybrid vehicles typically ranges from 8 to 15 years, depending on the battery type, operating environment, and maintenance methods. Nickel-metal hydride batteries generally last 8 to 15 years, while lithium-ion batteries can last 10 to 20 years. Battery life is significantly affected by charging and discharging strategies: shallow charging and discharging can extend cycle life, while fast charging or extreme temperature environments (such as high temperatures or high humidity) accelerate aging. For example, the rate of battery capacity degradation at 45°C is three times that at 25°C. In addition, the usage habits of hybrid vehicles are also crucial: frequent rapid acceleration or deep discharging will shorten battery life, while regular maintenance (such as keeping the battery pack ventilated and using original charging equipment) can slow down degradation. Currently, mainstream manufacturers provide an 8-year or 150,000-kilometre warranty for hybrid batteries. Some technologically advanced models have battery designs with a lifespan exceeding the vehicle's service cycle, and actual replacement needs mostly stem from accidental damage rather than natural degradation. Therefore, with reasonable use and maintenance, hybrid batteries can fully meet long-term usage needs.
