Features Smart Voltage Sensitivity: The isolator utilizes a voltage-sensitive chip to prioritize the primary battery's replenish power, ensuring your vehicle is always ready to start. Rugged Durability: Designed to endure extreme weather, vibrations, and is water-resistant, the isolator is perfect for demanding outdoor applications. Intelligent Charging: The VSR module automatically merges the charging of two batteries when the engine is running and separates them when the engine is off, preventing drain from the primary battery. Versatile Use: Its suitability for a wide range of vehicles, including ATVs, UTVs, boats, RVs, trucks and caravans, makes it a handy tool for a variety of outdoor adventures. Compact and Portable: The small, lightweight design makes it easy to carry and install, ensuring a practical and user-friendly experience. Feature: 1. Built‑in LED indication (turn on when VSR is connected), with remote LED port, display VSR status (not including LED), when the engine is o_x005f_x001e_ff, the storage mode allows zero power consumption. Specification: Item Type: 125 Amp Battery Isolator Material: ABS Uses: This battery isolator is small in size and can be used almost anywhere, suitable for ATV, UTV, boats, RVs, maritime vehicles, trucks, and caravans. Nominal Voltage: DC 12V Combined Voltage: DC 13.3V Open Voltage: 12.8V DC Continuous Rating: DC 125A Intermittent Rating: DC 140A Power Consumption: 10mA (standby) 330mA (start) 0mA (storage) Terminal: M6(1/4in)  Package List:1 x 125 Amp Battery Isolator 1 x User Manul4 x Screw1 x Terminal Package List 1 x 125 Amp Battery Isolator 1 x User Manul 4 x Screw 1 x Terminal