Boat and RV owners, this Mastervolt Battery Mate isolator is seriously smart technology for keeping multiple batteries properly charged. Unlike old-school isolators that can mess with your charging system, this 120-amp unit works with any alternator or battery charger without needing special adjustments. It intelligently manages the voltage to ensure both battery banks get charged completely and efficiently. The DIN rail mounting makes installation clean and professional-looking in your electrical panel. Perfect for systems where you have a starting battery and a house battery - it prevents your accessories from draining your starting power while making sure both batteries get the charge they need. The build quality is typical Mastervolt - solid, reliable, and built to handle marine environments. If you're tired of dealing with dead batteries or uneven charging between your battery banks, this isolator solves those problems beautifully. Much better performance than basic diode-based isolators, and way more convenient than manually switching between batteries. Your batteries will last longer and you'll have power when you need it most.
Free 30-day returns 
Free 30-day returns
