ARCO Marine BI-1202 Battery Isolator - 120A - 1 Alternator, 2 Battery [BI-1202]

The Arco Marine BI-1202 is a top - notch inboard/outboard battery isolator. It can manage 1 alternator, 2 batteries, and has a maximum capacity of 120A. It's rated for use with 10 to 350 - amp alternators in 12, 24, or 32 - volt negative ground systems. Key features include: handling 1 alternator, 2 batteries with a 120A max; being a solid - state device that allows current to flow in one direction only, preventing a higher - charged battery from discharging into a lower - charged one. Both batteries get automatically charged in proportion to their needs when the engine runs. When used with selector switches, you don't need to change the switch position for charging both batteries. The isolator proportionally distributes the alternator's output or charging current to the batteries regardless of the switch position. Note: Don't use this on 12 - volt charging systems with 24 - volt trolling motors or newer outboard engines with rectifier - regulator charging systems. This product is non - returnable to the original point of purchase. Contact the manufacturer directly for any issues.

Using the ARCO Marine BI - 1202 Battery Isolator is easy. First, make sure your system matches the requirements: it works with 10 to 350 - amp alternators on 12, 24, or 32 - volt negative ground systems. Connect the alternator and two batteries as per the instructions. Once the engine starts running, the isolator will automatically charge both batteries in proportion to their needs. You don't have to adjust the selector switch position if you're using it with one. Be careful! Don't use this isolator on 12 - volt charging systems with 24 - volt trolling motors or newer outboard engines having rectifier - regulator charging systems. For maintenance, check the connections regularly to ensure they're tight and clean. If you face any problems, don't return it to the place of purchase. Instead, reach out to the manufacturer directly.