Skyllermarks Battery Isolation Kit, 1 starter + 2 booster batteries

This complete kit from Skyllermark includes an isolation relay and installation materials, ensuring that your starter battery always has power. The isolation relay automatically ensures that the starter battery is disconnected when the engine is not running, protecting the battery and ensuring sufficient power to start the engine. Safety on the water is of paramount importance, and having power on board to start the engine is especially important when you are in a natural harbor, for example, where assistance is limited. A traditional starter battery is not designed to be discharged, which can damage the battery. Instead, use other batteries and separate them into two battery banks with this kit.
The set is intended for one starter battery and two consumer batteries.

The series includes:
1 x Isolation relay 12V, 75A with 35cm long cables
3 x Battery terminal 35/50mm² (+)
3 x Battery terminal 35/50mm² (-)
1 x Terminal block 4x50mm², red
1 x Terminal block 4x50mm², black
1 x Protective cover
1 x Fuse holder XS, torsionally rigid
1 x Protective case XS
2 x Fuse with housing 400A
installation instructions
You will also need cables of the correct length and size, unless they are already on the boat.