Manufacturers of cars, trucks, buses, and motorcycles are introducing a 48-volt mild-hybrid system to increase fuel efficiency and reduce CO2 emissions. This system adds a 48-volt battery to the traditional 12V battery, increasing power capability by 4x. This system can power a hybrid motor for faster acceleration and fuel savings. The advantages outweigh the conversion cost, as the data center industry discovers. The 48V mild-hybrid system offers lower emissions, longer range, and higher gas mileage, while also offering new design options.