Is a Portable EV Charger for Emergencies Worth It?

https://www.dangerousroads.org/around-the-world/vehicles/13782-how-to-plan-a-safe-ev-road-trip-through-high-altitude.html

Here's the thing about electric vehicles and mountain driving: ever notice how the range meter lies? One minute you're confident you've got plenty of juice, and the next, you've lost 20% range just climbing a hill or battling cold weather