Tesla owner reports 90-series battery holds 84% after 1.2M km
A long-term Tesla owner shares battery degradation data, noting only a non-Tesla component has weakened.
A Tesla owner reported that their 90-series battery pack has retained 84% capacity after 1.211 million kilometers, according to a post on X. The owner noted that "only the button cell is weakening. But that's not from Tesla," suggesting the vehicle's main battery has remained remarkably durable despite the extreme mileage.
The observation underscores the longevity potential of Tesla's battery technology in real-world conditions, even after more than a decade of use in some cases. The specific reference to a non-Tesla component—likely a small CR2032 or similar battery used in the vehicle's key fob or other accessory—indicates the core pack itself continues to perform well.
Battery degradation remains a key consideration for long-term EV ownership, and user reports of extended durability help inform expectations around vehicle lifespan and residual value.
"Einzig die Knopfzelle schwächelt. Aber die ist nicht von Tesla. Quoting @gem8mingen: “Hm…mein 90er Akku 1.211.000 km liegt bei 84%”"— X · @gem8mingen