What is the ford fusion energi battery upgrade procedure?

Unfortunately, there is no procedure to upgrade the battery in Your Ford Fusion Energi. Ford's 9kWh battery is all that's compatible. If You need to replace Your battery, it will cost a pretty penny; You're likely looking at upwards of a $3,000 replacement bill, and potentially up to $6,000. Remanufactured batteries can sometimes be found as low as $1,000, but this is the exception and not the rule. This replacement procedure is recommended to be completed only by a trained and certified professional mechanic. With such an expensive and dangerous piece of equipment, You're running plenty of risks doing it on Your own. Plus, the cost of labor will pale in comparison to parts, so You won't be saving much by skipping the shop.