Arco Marine BI-3203 2-Alternator Battery Isolator

• Supports up to 2 alternators and 3 batteries with a maximum of 120A
• Solid-state design allows current flow in one direction, preventing higher-charged batteries from discharging into lower-charged ones
• Automatically charges both batteries proportionally based on needs while the engine is running
• No need to change switch positions when using with selector switches for charging both batteries
• Provides proportioning of output or charging current to batteries regardless of switch position

NOTE: Not compatible with 12-volt charging systems using 24-volt trolling motors or newer outboard engines with rectifier-regulator charging systems.

Returns: This product may not be returned to the original point of purchase. For any issues or concerns, please contact the manufacturer directly.