phluppsen Posted September 6, 2020 Share Posted September 6, 2020 Question to the developer(s): How do you calculate the displayed degradation when the car is linked to the app? Mine showed 1.4% when first linked, which changed to 1.1% where it stayed for a long while. On a recent trip, it jumped to 9% while at a supercharger (which I find a little excessive for one charging session ;D). On the last session of the trip, the degradation slowly decreased to the 7.7% it displays now. Haven't been to a supercharger for a while, so I don't know what it would display at the moment, but I can't really understand, why the car would show such a jump in degradation and would love to have some insights into how the app calculates that value. Thanks (: Link to comment Share on other sites More sharing options...
Jason-ABRP Posted September 7, 2020 Share Posted September 7, 2020 For Tesla we don't have a way to directly retrieve the degradation or capacity so we calibrate while charging. The Tesla API reports how much energy is fed to you by the charger, so we track that against your battery percentage to determine the degradation. That said, the process could probably do with some refinement, as with only a few measurements it's prone to the behavior you describe. 1 Link to comment Share on other sites More sharing options...
chuckecheeseli Posted September 8, 2021 Share Posted September 8, 2021 Hi, since the original post is from almost exactly a year ago, I just wanted to confirm that Jason's response is still accurate. So, if I have Model 3 with 73 kWh usable battery capacity, and the Tesla API detects 73% kWh supplied when charging my car from 0% to 100%, then ABRP estimates I have 0% battery degradation, correct? Does this estimation occur during all charges? Just supercharger? Level 2? Does a certain amount of energy threshold need to be met? Thanks! Link to comment Share on other sites More sharing options...
TeslaMartin Posted September 10, 2021 Share Posted September 10, 2021 I just calculated a route in ABRP with my 03/2021 Model 3 Long Range and was wondering about the absurd amount of charging stops. Turns out: ABRP estimates a battery degradation about 31 % ! (in fact, the degradation is 0 to likely 1 %) Where does such a faulty degradation calculation come from? What can be done to correct it? Link to comment Share on other sites More sharing options...
Katya-ABRP Posted September 10, 2021 Share Posted September 10, 2021 Hi @chuckecheeseli, We're using data from when using superchargers. There's no specific speed, energy or time required, we'll summarize it as it is generated. /Katya Link to comment Share on other sites More sharing options...
TeslaMartin Posted September 10, 2021 Share Posted September 10, 2021 Does this mean that charging more at superchargers gives a better (more correct) degradation value? Link to comment Share on other sites More sharing options...
chuckecheeseli Posted September 10, 2021 Share Posted September 10, 2021 And is the data and calculation cumulative, running average, or just most recent supercharger session? Thanks! Link to comment Share on other sites More sharing options...
cshookIII Posted December 28, 2021 Share Posted December 28, 2021 Hi there - I just noticed a similar drastic change in battery degradation today. I have a 2021 Model Y LR with 6,100 miles on it, and the auto calculated battery degradation on ABRP kicked in to 16% after a supercharger stop today. It was around 37 degrees F and raining - does this estimation calculation also factor in battery efficiency loss due to temperature/weather? 16% in 6k miles seems (slightly) aggressive. Planning an 800 mile road trip in cold weather starting tomorrow and want to do my best to get an accurate read on stops/time. Thanks! Link to comment Share on other sites More sharing options...
TheHuskyCrobats Posted March 4 Share Posted March 4 Same for me, 10.7% degradation after chargin at supercharger. Seems strange. Link to comment Share on other sites More sharing options...
Katya-ABRP Posted March 6 Share Posted March 6 On 3/4/2023 at 12:43 PM, TheHuskyCrobats said: Same for me, 10.7% degradation after chargin at supercharger. Seems strange. Hi @TheHuskyCrobats, Normally this value should stabilize after enough data has been generated. Should it not change we advise you to reach out to our support / submit a bug report. /Katya Link to comment Share on other sites More sharing options...
