Dual Battery Isolator - JOYHO 12V 140Amp Smart Isolator VSR Voltage Sensitive Relay Double Battery Automatic Charger Fits RV Marine Car Vehicles Truck Caravan Off-road Camper-

The dual battery isolator kit enables your accessories to run from a separate battery while the engine is not running on your vehicle while keeping your main battery charged and your vehicle always ready to go and start when you want it to. This dual battery isolator kit features 12 Volt 140 Amp Voltage Sensitive Relay Isolator and includes all the bits and pieces needed for a complete installation. Kit includes: 1xSmart Battery Isolator. 1x Insulated blue ring terminal. 2x Self tapping screw. 2x M6 nut. 2x M6 spring washer Fully automatic priority charging for main battery. 12V 140A isolator with Cut-In:13.3V, Cut-Out:12.8V Easy 3 wire connection at the battery. Uses exisiting wiring in vehicle No voltage drop. Compact size 12" x 8.5" x 3" No heat sink area required. Water resistant. Operation temperature range: -30 to 105°C (-22°F to 221°F)