Issue: Maximum battery charge level reduced - No error messages
Sorry if this is a repeat question but new to site and didn’t find an answer…I have a 2020 Model S Long Range Plus. Bought when one year old with 6,600 miles… don’t know prior charging habits If it makes a difference. Milage rating appears to be B/T 402 & 405 depending what article you may read.
BACKGROUND & ISSUE:
Over a 15 month period, we had drove the car nearly 6,000 miles and only used a supercharger twice to familiarize ourselves with the process. Otherwise, we always charged at home on a 50 amp circuit and never charged over 80% setting. That said, even though charging was set at 80%, it routinely topped off B/T 346 & 348... obviously over 80% but I just assumed this was likely normal.
Then came June 2022 @ 12,450 miles - I charged the car at home to the 80% setting which topped off at 346. For the first time ever, we took the car on a road trip. After driving 160 miles directly to Monterey, Ca., I stopped at a Supercharger near our hotel to top off the charge. THE CHARGING STOPPED AT 307 MILES. There have been no error messages or any other changes to indicate a problem. Since that time, charging now routinely tops off B/T 303 & 308 which is now mildly below the 403/405 80% limit for the Long Range Plus.
So, any idea what happened here?? Why was it charging consistently over 80% and then, why suddenly it charges consistently to below 80%? Any reason for concern? Charging at 304 mile is of no consequence for us given our driving habits, however; I want to make sure we are not harming the car by not addressing this changing issue further.
Thanks for any input…