Who'd have thought snobbery would extend to car batteries, sounds like a Two Ronnies sketch
"And now let us dwell on each of the Varta and Bosch series with simple words:
Varta Black Dynamic batteries (Bosch S3 batteries) are batteries designed to operate for a period of three years. Their starting currents correspond to cars that run only on a gasoline engine. Both batteries are low cost and affordable to customers with the most limited financial capabilities, and therefore suitable for poor clients who want to have in their car exactly the battery of Varta or Bosch brand.
Varta Blue Dynamic batteries (Bosch S4 batteries) are batteries designed to operate for a period of four years. Their starting currents correspond to the gasoline engine cars with a large number of consuming devices. Batteries are designed for use in cars with prestige above the middle class, where interruptions in battery charging with a generator are simply unthinkable.
Varta Silver Dynamic batteries (Bosch S5 batteries) are batteries designed to operate for a period of five years. Their starting currents correspond to cars of both gasoline engines and mainly diesel engines with a large number of consuming devices. Batteries are designed for use in cars with a class of prestige above average, where disruptions in battery charging by the generator are simply unthinkable"