How Long Does a 48V Mild Hybrid Battery Last?

1 Answers
LeJulianna
07/29/25 6:09pm
48V mild hybrid batteries typically last between 3 to 5 years. The 48V mild hybrid battery is designed to recover excess energy generated by the vehicle, and its lifespan can be considered equivalent to that of the entire vehicle. Under normal usage conditions, replacement is usually unnecessary. The 48V mild hybrid battery system primarily consists of a 48V energy recovery and acceleration assist motor, a 48V battery, a 48V or 12V voltage converter, and a 12V battery. The 48V energy recovery and acceleration assist motor is an enhanced version of the traditional automotive generator, providing additional power when needed by helping the engine increase its speed. This eliminates the previous reliance on excessive fuel injection to boost power. With motor assistance, the engine can reduce additional fuel injection or maintain the original fuel injection level while achieving improved performance.
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