Fortunately, the vast majority of "portable" EVSEs are in the form of OEM equipment that came with the car, and therefore already restricted to the lowest common denominator of 115V at 12A. Big car companies probably intentionally avoid L2 EVSEs as standard equipment for the very reason of idiot proofing for safety sake. But, talk about "useless" . . . who in their right mind would hook up the RAV4 EV's standard OEM charge cord only to be able to recharge at such a snail's pace? That would be the equivalent of taking a whole hour or longer to refill the average ICE car's gas tank at the pump. Frankly, such horribly slow charging rates - as auto industry's defacto standard - are giving ALL EVs a bad reputation.
I kind of like the way the JuiceBox manages the issue of current limiting. Both 120V and 240V (and potentially 208V) defaults are set in firmware, but they can be changed "on the fly" with the LCD and key fob option. "If" someone else is driving my EV, they can only recharge per those default limitations (which can be preset to 12A and 24A respectively). Unless, I gave the driver my JB key fob, they simply do not have the ability to override the default. However, for all intent and purpose, NOBODY ELSE BUT ME will have access to my JuiceBox EVSE anyway, especially for "portable" use, so the only other way to recharge is at a Public Charging Station, or at 115V with the OEM charge cord ALWAYS kept with the car. Probably solved! :mrgreen: