Hi.
12 months ago, 100% charge would get me 294 range in miles, at least on my screen....
A year later and this is now 267 for a100% charge. As advised I have been letting my battery drop to sound 50% less when it's been possible.....
Precisely as
@AlanSubie4Life says, it doenst make much sense having lost very little in the first four years ans loosing another 10% the next year.
Are you sure that you had 294 miles one year back?
I would say that your battery started with ~ 77.8 kWh capacity and lost, perhaps slightly less than 5% the first year (based on the area snd average temperatures in general, this can be fime tuned from your charging data habits etc.).
So after one year = ~ 74kWh. This would be sufficient for about 302 miles.
After two years ~ 72.5 kWh = 296 miles
After three years ~ 71 kWh = 290 miles
After four years ~ 70 kWh = 286 miles
After five years ~ 69 kWh = 282 miles
( above calculated on ~ 5% calendar agibg the first year, we could expect your car to be slightly better due to the not that hot climate).
What SOC did your car mostly be at? I didnt quite get the ”drop to sound 50%”.
What to do?
First, take a picture* of the energy screen and post here, then we can calcultate the BMS capacity estimate.
Next, if the above calc seems off a BMS calibration might reset the capacity calculation. We can get back to that part if needed.
*) like this; should show the three circled values in the same picture and setting down right need to be ”normal range”.
