Good day, I have owned a Leaf for a year or so, but I never plugged anything into the OBD connector

Since I own the 2014 S, I don't have access to the NissanConnect service and I can't see e.g. the current charge level when I leave car charging someplace. However, I've discovered the AutoPi service at
https://www.autopi.io which looks like it could do the trick, and is extensible enough to program customized Leaf CAN codes.
However, I've heard scary stories of people buying OBD adapters and short-circuiting/breaking/creating random electrical issues with their cars. Therefore I'd like to ask if you guys have any experience plugging AutoPi into your Leaf? Thanks!