I found this article which brings some information about the current sensor in the Miev: Battery Management System Hardware Concepts: An Overview by Markus Lelie, Thomas Braun, Marcus Knips, Hannes Nordmann, Florian Ringbeck, Hendrik Zappen and Dirk Uwe Sauer Appl. Sci. 2018, 8, 534; doi:10.3390/app...