Most ebike battery packs do not get too far over a kilowatt because the pack alone is going to weigh in at over 9kg (20 pounds). Once you get to 1000 watt hours, its called a one-kilowatt battery pack, and that’s how electric car packs are measured. 2500 watt hours for an ebike battery is going to weigh in at over 22.5kg (50 pounds) and you're completely leaving ebike territory and moving into electric car territory.Have batteries gotten to the point where they will hold at least 2500 watts yet? Cost? Weight?
And is it possible to put a front wheel drive setup, safely, on a bike that I already have?