It was bound to happen to me. For years I was bragging that I regularly drive my car down to single digits and it has never shut down.
Thank you for telling us about your misadventure. Your level headed and candid report was educational and I very much appreciated the thoughts of others who have experienced this and those who responded with out trolling the poor chap. Civility much appreciated.
I got caught once by strong headwinds and AC use traveling from Ritzville, WA towards Seattle.
When I left Ritzville it said arriving at Clu Elum TSC at 18%, then 15%, then 12%. Ellensburg showed all SC's in use, so I continued west with the car predicting arriving at 10% SOC.
Well....I pulled in to Clu Elum at 5.5% (23km's left on the dial). I plugged in, lefty the windows slightly down, turned off everything and went for a short walk to let my thirst beast guzzle down some much needed energy with all loads removed.
Pure pucker factor for the final 15km into Clu Elum. And the lesson here... Don't push it unless you have to.
If I may offer a thought David, you mention you regularly driving the battery down to single digits range.
Anything regularly below below 20% SOC can do cumulative damage to the battery.
All the literature and engineering analysis's I've read make it very clear you can drastically reduce the range available and life of an Li ion battery by discharging it to nearly empty.
Therefore may I refer some reading to you.
The Secret Life Of An EV Battery | CleanTechnica
Although old, it is still very much correct. For max battery life, only go to 100% charge when you absolutely have to.
Instead stick to 85-25% charging cycle and your battery will reward you with a long life and good range for a very long time.
Food for thought,
Cheers! Hugh-SG