In addition to never charging the vehicle past 90 percent, Chevrolet would also like customers to ensure Bolt batteries are not depleted below 70 miles of remaining range ... It sounds like GM wants to keep these cars from spending any more time plugged in than absolutely necessary.
https://www.thetruthaboutcars.com/2021/07/hot-tip-chevrolet-addresses-bolt-ev-fires-readies-recall/