General description The VSR Voltage Sensitive Relay is a high-quality automatic charging relay designed for DC 12V systems. Made from fiberglass reinforced nylon, it offers exceptional durability and resistance to aging and abrasion, ensuring long-lasting performance. This relay is ideal for dual battery vehicles, allowing for efficient charging of a secondary battery once the primary starter battery is sufficiently charged. Technical specifications Voltage: DC 12V Current Rating: 125A Combined/Open Voltage: 13.3V/12.8V DC Material: Fiberglass reinforced nylon Installation Surface or panel mounting options available for flexible installation. Usage Automatically charges the second battery once the primary battery is fully charged.