Hi, I love my C-Max Energi and gonna keep the car until it completely dies hopefully 20 years :). I was considering putting a 23.6 Kilowatt battery Ford Focus EV battery in it to increase my EV Range to about 70 miles. The Focus electric gets 76 miles on its battery and I wanna increase my range instead of ditching what I have and paying out thousands on a new vehicle with only 20 or 40 miles range. The platforms, technology, wiring are the same because ford is good and consistent on cost and used existing hardware. I see the batteries on Ebay for about 5,000. The only thing I am concerned about is the Form Factor or spacing. Capacity shouldn't be a problem. Ford also changed the ford focus electric to a 33.3 kilowatt battery so they have some old stock lying around. There no longer making these cars anymore so I don't think a warranties matter anymore. I wanna prolong my ev range so I don't pollute the air and use my gas engine as little as possible and stick to a all electric as possible.