Meet the Mastervolt Battery Mate 1603IG Battery Isolator — a smart, multi-battery charging solution built for 12V and 24V systems. Ideal for setups with two or three independent battery banks, it ensures reliable, coordinated charging across all banks.
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Three battery outlets: supports two or three independent battery banks without compromise.
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MOSFET technology for minimal voltage drop: compensates for voltage drop to deliver proper charging voltage to all connected batteries with multiple banks.
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High current capability: max output 120 A from the battery charger and 160 A from the alternator.
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Universal compatibility: works with any alternator or charger, ideal for mixed-brand setups or systems where charge voltage cannot be adjusted.
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12V and 24V system support: designed to accommodate common marine and vehicle electrical configurations.
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Rugged construction: corrosion-proof with aluminum heat sinks and synthetic end plates for durable marine and vehicle use.
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LED power indicator: clearly shows when input power is active for quick status checks and safety.
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Easy installation: secure mounting with solid bolt connections, lugs, nuts, and locking rings.
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Compact design: dimensions 8.1 x 5.5 x 3.1 inches; weight 2.2 lb.
This Battery Mate helps you reach full voltage quickly across all banks, reduces setup complexity, and supports reliable charging in demanding environments. It’s designed to keep your battery systems energized and ready, whether you’re on the water or on the road.
| Number of battery outlets |
3 |
| Dimensions, hxwxd |
8.1 x 5.5 x 3.1 inch |
| Weight |
2.2 lb |
| Max. output battery charger |
120 A |
| Max. output alternator |
160 A |
