UNPARALLELED PERFORMANCE ON THE GO. The DF15A EFI is one of the most technically advanced portable outboards on the market today— the world’s first 15 HP outboard motor designed with Lean Burn and Battery-Less Electronic Fuel Injection. The Suzuki EFI system operates Battery-Less, which is an industry first in this horsepower class. The DF15A EFI is a smooth running “Next Generation” four-stroke which delivers quick starts, great acceleration, awesome performance and superior fuel economy. Now available in Cool White.