CellScore

Battery health certificates for used Teslas. Know exactly what you're buying before you sign.
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MATTHEW MCKINZIEProfile picture@mmckinziec9·Apr 25
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Welcome to CellScore — here's how it works

Thanks for getting your CellScore certificate. Here's what happens next:


1. Connect your Tesla

Use the Tesla app or plug in via OBD-II. We pull battery data directly from the vehicle's BMS (Battery Management System).


2. We analyze your cells

Our algorithm scores cell degradation, charge cycle history, estimated vs. actual range, and thermal patterns. Every metric matters.


3. Get your certificate

You'll receive a verified Battery Health Certificate with your CellScore grade (A+ through D). Share it in your listing — buyers trust verified data.


Pro tip: Run your report after a full charge cycle for the most accurate results.


Drop any questions in the Community Chat — we're here to help you get top dollar for your Tesla.

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MATTHEW MCKINZIEProfile picture@mmckinziec9·Apr 25

Why used Tesla buyers are ghosting your listing (and how to fix it)

Here's what's actually happening when someone looks at your used Tesla listing:


They see the price. They check the miles. Then they think: "But what about the battery?"


And they bounce.


It doesn't matter if your Model 3 has 95% battery health. If you can't prove it, buyers assume the worst. A dead battery is a $15,000+ repair — nobody's taking that risk on your word alone.


The used EV market has a trust problem.


CarFax tells you about accidents. Nobody tells you about batteries. Until now.


CellScore generates a verified Battery Health Certificate by pulling real data from the car's BMS — cell degradation, charge cycles, thermal history, actual vs. estimated range. No guessing. No "trust me bro."


Sellers who certify their battery are closing faster and getting better offers. Because when a buyer sees an A+ CellScore grade, the battery question disappears.


If you're selling a Tesla, this is the easiest $69 you'll ever spend.