Blue Sea 7601 DC Mini ACR Automatic Charging Relay - 65 Amp

The Blue Sea 7601 DC Mini ACR Automatic Charging Relay is a 65-amp dual-battery management system engineered for boats with multiple battery banks and alternators up to 65 amps—common on outboards and many inboard marine engines. This compact automatic charging relay senses voltage across two separate battery banks and intelligently distributes charging current, ensuring both batteries stay properly charged without parasitic drain or manual intervention. For recreational anglers and offshore boaters running dual systems, the 7601 eliminates the guesswork of manual battery isolation switches while protecting against deep discharge situations.

The 65-amp continuous rating handles the charging output of most modern marine alternators, making it suitable for boats with moderate to heavy electrical loads. The compact case design allows flexible surface or panel mounting in tight engine compartments. A snap-on cover insulates the terminal connections, reducing corrosion risk in the salt-air environment typical of coastal and offshore fishing operations. The unit includes a 1/4" × .032" male quick-connect terminal for ground and employs 5/8" (16mm) battery terminals. An onboard LED indicator provides real-time ACR status visibility, confirming that the charging relay is functioning and batteries are being managed correctly.

This relay is ideal for fishing boats, cruisers, and center consoles where a house battery runs electronics, navigation, and accessories while a separate engine-start battery remains dedicated to cranking power. By automatically connecting the two banks when the alternator charges and isolating them when the engine shuts down, the ACR prevents a dead engine battery caused by house loads. Weekend anglers and serious offshore crews alike benefit from the reliability and simplicity—no solenoid switching hassles, no manual relay management, just automatic charge distribution and peace of mind on extended trips.