[Cephas]

90% is the maximum recommended but if you really want to maximize the life of the battery, then keeping it at 40-60% is the best -- there are other threads here that provide the data to back that up.

So if you only use 20-30% per day, let's say, then set the limit to 60%. No need to keep charging to 90% unless there is a need to have that capacity for unexpected trips.

 

[Cephas]

I usually keep the battery between 20% and 70% in my everyday use. Sometimes charge up to 90%. I try and not let the battery sit too long above 90% or below 20%. These seem to be pretty good rules for battery health without being too annoying. I've also heard somewhere there is a specific stress point in this particular Polestar battery at 70%, so try not to let it sit too long right there either. But ultimately I don't overstress any of it. Haven't seemed to lose much range at all over almost 3 years, even predominantly fast charging.

At 95K miles I also don't have any discernible range loss, with a ton of fast charging in the first two years (11,067kWh to be exact!)