I own a 2015 Ford Focus Electric. I recently purchased the car on July 12, 2019. After a full charge 100% battery I only get 70 miles until empty. I drive like a "Zen Master" according to my Ford App. I travel 8 miles to my destination & my dashboard indicates 46 miles remaining on my charge. For this reason I'd like to add an additional high voltage battery. Since the trunk is largely consumed with one of the high voltage batteries, I think, why not include another. Has anyone else thought of installing an additional High volt battery? Does anyone know if this is not possible or practical? Rather than installing an additional battery, is there an upgrade or does the newer model's battery fit in the same compartment and can I get greater range from incorporating a newer battery? Sorry for so many questions!