Ampper 12V 140Amp Dual Battery Isolator, Battery Voltage Sensitive Relay (VSR) Smart Battery Isolator for Car, Vehicle, RV, ATV, UTV and Boat

Ampper 12V battery voltage sensitive Relay (VSR) dual battery isolator for car, vehicle, RV, ATV, UTV and boat. Specifications: 1, Design for two battery systems isolate and charge, it's all need to charge and isolate two batteries (SUITABLE for Acid-Lead batteries, NOT SUITABLE for Lithium batteries). 2, Allow to having two separate power sources while charging by one alternator. 3, Cuts in at 13.3 volts and cuts out at 12.8 volts. 4, Ensure your primary battery is always charged and ready to start your engine, the secondary will be charged after the primary battery's volts exceed 13.3 volts. 5, Heavy built to suitable for almost anywhere even off-road, which is water resistant, shock resistant, dust proof and withstand unexpected extreme weather environments. 6, Universal used for car, vehicle, RV, ATV, UTV and boat, also two battery electrical equipment. 7, VSR comes with mounting plate and 4 bolts for install. Complete kits includes: 1 x voltage sensitive Relay (VSR). 4 bolts for install. 100% Satisfaction. No reason for return or change. Order it now!