Features: 1.Battery System: The automatic 140 amp dual battery isolator has the charging you need for a 2 battery system, which is like having 2 separate power sources for each battery. 2.Performance: Dual battery isolation kit allows your accessories to run from a separate battery while keeping your main battery charged and ready to start your vehicle when you need it. 3.Voltage Protection: When the input voltage is below 11V, the circuit breaks to protect the main battery from over discharge, and when the input voltage reaches 17V or more, it breaks to protect the battery from high voltage shock. 4.Wide Application: Dual battery smart isolator suitable for a wide variety of vehicles, such as, cars, RVs, trucks, tankers, SUVs, ships, small boats, yachts. 5.Install Detail: The battery isolation relay does not require a generator or ignition connection, no additional components are needed to complete the installation, and a full range of accessories are available to meet your needs. Specification: Item Type: Dual Battery Isolator Kit Material: ABS Operating Voltage: 12V Working Current: 140 AMP Red Line Length: Approx: 5 meters/196.85in Product Description: High and low pressure protection: When the input voltage is lower than 11V, the circuit will disconnect automatically to protect the main battery from overdischarge. When the input voltage reaches more than 17V, the circuit automatically disconnects to protect the secondary battery from high voltage shock. The package contains all the necessary accessories and installation instructions for easy installation Application: Battery isolator is small enough to fit anywhere, and is ideal for most cars, RVS, trucks, tankers, SUVs, ships, boats, yachts. PackageList: 1 x Battery Isolator 1 x Red Battery Cable 1 x Black Grounded Battery Cable 2 x Fuse Holder 4 x Black Heat Shrink Tubing 6 x Red Heat Shrink Tubing 10 x Strap 4 x Safety Bar 1 x User Manual 10 x Bolt 10 x Double Sided Adhesive Cover 10 x Copper Lug 5 x Battery Isolator Accessories 1 x Pack of Gasket Bolt Accessories(6PCS)