I am successfully using leafspy with a konweii dongle. I will say tho for some reason on the e-nv200 the mileage is always wrong. Everything else is good like charges, ah, charge rate, gid`s, etc,,,, all good except the mileage covered, mine reads very low, last time i read it actual mileage on odo was about 40k but in leafsy it read around 12k.
It reads correctly mileage on my brothers leaf tho.