BE READY: The Spartan Power Dual Battery Isolator is an intelligent battery isolator that helps you be prepared for any situation; it allows you to run two batteries simultaneously, protecting and maintaining a two-battery system while optimizing charging VERSATILE USE: Our VSR battery isolator can be used to protect any 12-volt battery; it eliminates the possibility of a dead battery and keeps it fully charged when you need it most EASY TO USE: This dual battery isolator is easy to install and operate; simply connect two batteries to the isolator and it will efficiently transfer the charge from one battery to the other, saving you time and hassle WEATHER RESILIENT - Explore any environment with confidence with the IP-67 waterproof rated dual battery isolator; designed to perform well and remain resilient in the harshest weather conditions and terrains EASY TO INSTALL WITH FULL KIT - Compact design that easily fits in your car and takes up virtually no space; comes with a complete isolator kit Colour:Black Material:Plastic Package Contents: 1x Smart Dual Battery Isolator kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.