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The Toyota Prius Prime is a highly efficient plug-in hybrid offering strong EV range and low running costs. Even with a large traction battery, it still relies on a 12V battery for system startup and electronics.
Not sure which battery fits your Toyota? Use our Battery Fitment Finder or read our blog: Which Car Battery Fits My Vehicle? .
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On average, 3–5 years depending on usage and climate.
Yes — system warnings and reduced functionality often appear when the voltage drops.
No — the traction battery uses EV charging, but the 12V battery charges through the car's hybrid system.