VARTA Professional SLI batteries are ideal for smaller boats with inboard or outboard engines. They deliver reliable starting power for marine applications where strong and consistent ignition is essential.
VARTA Professional SLI is designed for applications where starting performance is the top priority – such as in small to medium-sized boats. SLI stands for Starting, Lighting, Ignition – perfectly describing the battery’s primary purpose. Whether for short outings or spontaneous trips, this battery ensures your engine starts reliably every time. Engineered in Germany, it meets the highest quality standards and delivers dependable performance in leisure applications.
VARTA Professional SLI is the updated version of the trusted Professional Starter battery. It uses the same proven technology – now with a new name. If you’ve previously relied on the Professional Starter, you can switch to the Professional SLI with confidence. No technical changes are needed, and the performance remains at the same high standard.