The gauge says it will take 19 hours to reach a full charge but an hour after I’ve started charging it says it will be fully charged in 13 hours. Go figure.
The recommendation is to keep the battery between 20-80% charge most of the time and only fully charge it to 100% when you have a longer trip. I did get it down to 9% and a lovely voice comes on to warn you that you should seek a plug soon, kind of like the light that comes on when you hit E on your gas tank.
I’ve set my charging timer to start at 8:00 p.m. and turn off when it reaches 80% charge. All in anticipation of Rate 17. By 6:00 a.m. the charge is at 80% and I’m good to go.