Safeguard 12V Alternators from Voltage Spikes and Battery Disconnect Events

Engineered for 12V charging systems, this alternator shield protects high-output alternators from damaging voltage spikes caused by sudden battery disconnects, load dump events, and lithium battery BMS shutdowns. By clamping excess voltage and safely diverting it to ground, it helps prevent diode failure, reduces stress on internal alternator components, and improves the reliability of modern marine and commercial electrical systems.

Key Features

• Designed for 12V Charging Systems – Specifically configured to protect 12V alternators with an operating protection range of 18V to 60V, making it suitable for a wide range of marine and vehicle electrical systems.
• Protects Against Voltage Spikes – Helps prevent alternator damage caused by battery disconnects, load dump events, and sudden voltage surges that can destroy alternator diodes.
• Compatible with Lithium Battery Systems – Reduces the risk of alternator damage associated with battery management system (BMS) shutdowns commonly found in lithium battery installations.
• Extends Alternator Service Life – Minimises electrical stress on diodes and internal components, helping improve long-term alternator reliability and reduce maintenance costs.
• LED Status Indicator – Integrated LED provides a clear visual indication of the shield's operating status for quick system checks.
• Quick and Simple Installation – Mounts directly to the alternator terminals, allowing straightforward integration into existing charging systems.
• Built for High-Output Alternators – Designed to support today's high-amperage alternators used in demanding marine and commercial electrical applications.
• IP68 Waterproof Construction – Sealed to an IP68 rating to provide dependable operation in wet and harsh marine environments.

Adding dedicated voltage spike protection helps reduce the likelihood of alternator failure while improving the durability and reliability of 12V charging systems.