Originally Posted by Shoof
A little birdie told me that Smart is working on a 240v portable charger
You can get portable chargers for 240v, the GE Watt Station
and Bosch Power Xpress
being two examples that can be ordered that way from the factory. (I actually have the latter, with a 6-50 plug, installed in my garage.) The problem usually is finding a plug to plug them into, since most homes, businesses, and/or RV parks don't have 240v sockets. If they do, there are a few types of sockets depending on amperage (5-40, 6-50, etc), and most are not downward compatible without a plug adapter.
As for defaulting to the slower setting on the 120v charger from smart, that's default to prevent the car from over-drawing on a circuit. Most residential circuits are wired for 15A service. The charger operates at 8A or 12A, defaulting to 8A.
I'm sure if you've had a 12A vacuum, you'll understand why 8A is the default at startup. You turn on the vacuum, and right away or shortly after (when the coffee pot turn on it's warmer, for example) you blow the fuse. Now imagine having that vacuum on for 13 hours...
As for the battery, the car will auto-regulate the amount of power it pulls in if you use the charge and depart feature so it knows when you want to use the car next. It will lower the charge rate as is best for the pack (based on heat, resistance, and other factors) to charge within the allotted time. The Charge Now setting, by contrast, always charges the car at the fastest rate available (based on settings/charger) until fully charged.