[500 AMP BATTERY ISOLATOR] The 500 Amp Battery Isolator is designed to isolate a second battery or applications where multiple batteries need to be isolated, making it ideal for audio systems, navigation, winches, generators, and other accessories without causing voltage drop in the secondary battery, while preventing the main battery from discharging. [PREMIUM QUALITY] The 500 Amp Battery Isolator uses high-quality copper coiled wire to significantly improve electrical and thermal resistance, extending service life. It meets or exceeds applicable industry standards and is endurance-tested for reliable performance in extreme environments. [HIGH CURRENT ISOLATOR] This battery isolator has a rated voltage of 12V and can provide a stable 500A continuous current at 12V, with a surge capacity of up to 700A. It is engineered to prevent voltage drop to auxiliary batteries while protecting the main battery. [KEY FEATURES] Prevents the main battery from discharging. When the engine runs, the isolator connects both batteries for charging; when the engine is off, it automatically isolates them. This reduces parasitic discharge from the secondary battery to the main battery, helping preserve starting power and extend the main battery's lifespan. Fitment: Suitable for various multi-battery applications including cars, SUVs, trucks, boats, RVs, and mobile power systems Color: Silver Material: Copper Package Contents: 1 x Battery Isolator Note: Light reflection and display settings may cause slight variations in color between the image and the actual item. Measurement allows an error of +/- 1-3 cm.