NeilBlanchard wrote:I said about 15 miles, not 15 minutes. That included a brief stint on the Mass Pike. I have been driving EVs for about 5 years, and over 50K miles. The battery pack wasn't too cold to take 50kW. The problem is the wimpy EVgo unit.
Oops, sorry about misreading that.
But, that implies that your 15 miles of driving was at slower city rates which wouldn’t necessarily warm the battery faster than 15 minutes of highway driving.
So, yes, I still think it is quite likely a cold battery issue. I know you’ve been around the block a few times (okay, a lot of times...) as an EV driver but the Bolt has a nearly 1,000 pound battery. It takes a lot to warm it up and what you are describing, whether 15 minutes or 15 miles, just isn’t going to make a lot of difference to a cold pack.
Ultimately, we’re both guessing. The way to know for sure is with an OBD reader.