0341002003 Bosch Battery Master Switch

The Battery Master Switch from Bosch (MPN: 0341002003) is sourced from Germany and has supplier-listed dimensions of 111 x 84 x 104 mm. It is typically used within the Electrical & Lighting > Power Supply > Battery category of automotive replacement parts. Dimensions are provided by the supplier and may include packaging dimensions. Automotive batteries are electrochemical energy storage devices providing initial electrical power for starting the engine and ongoing power for electrical systems when the alternator is insufficient. Typically located in the engine compartment, they deliver direct current (DC) electricity via a lead-acid, AGM, or lithium-ion chemical composition. Key specifications include cold cranking amps (CCA), reserve capacity (RC), and terminal configuration, dictating performance in varying temperatures and electrical load conditions. Modern batteries often incorporate internal sensors communicating battery state-of-charge and health data via the vehicle’s data bus. Proper venting systems are critical for lead-acid designs to manage hydrogen gas produced during charging.