I am back !
this thread is NOT dead and not forgotten.
I ride my winter EPLUS bike at very least 4 days/week , sometime 7 days/week
through snow, ice and in minus 10C typically on some days in minus 20C.
of course studed tires
trips are usually short NOT because of bike but because of me.
incredible that such cold does NOT affects EPLUS electronics AT ALL.
of course original EPLUS nickel battery in front wheel is long, long gone
It is powered by Nissan Leaf 11-in series cells.