Does it harm the battery to regularly arrive with less than 20% SoC?

[jmmowery]

I know the battery SoC should not be at less than 20% or more than 80% for long periods of time. But does it harm the battery to regularly arrive at a destination with less than 20% SoC if you're going to charge immediately (i.e. road trip)? I've read conflicting things about this and am confused. I notice the trip planner in the car will often plan so that your SoC on arrival will be less than 20%, even commonly down to 10%! So it must be totally fine if the car tells you to do it? Can anyone point me to an official answer on this?


Cheers.

 

[Zoomit]

So it must be totally fine if the car tells you to do it? Can anyone point me to an official answer on this?

This is all you’ll get for “official”.

 

[jcanoe]

If you are concerned about regularly depleting the battery to 20% state of charge (SOC) or below you can do several things to address this. First, charge to a higher SOC before your leave. Second, there is a build in battery reserve that is controlled by your right foot. Slow down 5 MPH and improve your efficiency and range by almost 10%. Slow down by 10 MPH and improve your efficiency and range by almost 20%.

 

[EVer Hopeful]

...and remember: if you're on a multi-stop road trip, you'll get more charge faster by arriving with 10% than you will by arriving with 20% or more

 

[thesmokingman]

Going to 100% SOC is more harmful than going to 5% SOC.

 

[norazi]

I think staying within 10-90% will be fine for 99% of people. There is a bit of a buffer with these packs so even when you charge to 100%, its more like 95% since there is some buffer remaining that you can't access and same thing going down to 0% (there's about 5% left beyond that).