GEBE 991181 Battery Isolator Voltage Sensitive Relay 24V 140A - Made in Germany Style_H1R1 and easy installation

and easy installation

plus it makes a

Piusi is the leader in providing DEF fluid management systems throughout the European continent

Note on 2015 BMW M4:

GEBE 991181 Battery Isolator Voltage Sensitive Relay 24V 140A - Made in Germany Style_H1R1 and easy installationThis is a premium quality item, made in Germany by IKA under their GEBE brand. GEBE was founded in 1906 and takes its name from their founder's initials, Gotthilf Breining. GEBE was originally a supplier to Bosch, Lucas, Fiat, and others. This voltage sensitive Relay allows two batteries to be charged at the same time. When the engine starts and the starting battery reaches 27. 4V, the relay pulls in, allowing the two batterys (starting and auxiliary)