How do I measure my battery degradation?
How do I measure my battery degradation?
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How do I measure my battery degradation?
Service mode test battery health. Read about it before trying
This is your answer, OP.
Everything else is a guess. But read up on the process.
yeah and be careful because if you don’t do the right steps in service mode, you can screw up your car and it’s not gonna be warranty. Dont go pressing random buttons.
I think the "official" way would be to charge your car up to 100% and switch your range display to miles. Compare that number to the original rated range of your car.
For example if your car is a 2021 Model 3 Performance like mine which shipped with "315" miles of range, and you charge it to 100% and it says 290 miles of range, 290/315 = 92% battery capacity. 8% degradation.
Understood. Thanks!
Why not just charge it up to 90% and calculate range/0.9 to get what the range would be at 100%?
I think the car does some kind of battery calibration or calculation when you charge to 100 that doesn’t happen otherwise.
I think that’s what the service mode battery test does as well. Discharges then charges up to 100.
I use Tessie. Great app feature wise and over time, when it collects enough data, the estimated health seems accurate imo.
Get the Tessie app, sign up for the free trial. On the battery tab click the heart icon in the top right. I’m a new Tesla owner so maybe others can say how accurate that is compared to a more rigorous test.
All you have to do is submit a request in your Tesla app for them to check the battery health. It's been free for me, no cost. They will remotely test it for you and reply back with the results. I do this once a year. For the last 3 years.