Protect and charge your entire electrical system with the Mastervolt BI 703 Battery Isolator 70A 3-Bank (83007030) from Nomadic Supply Company®. Designed for 12V and 24V systems, this diode-based isolator allows your alternator to charge up to three separate battery banks at the same time while preventing any one bank from draining another. With no moving parts and solid-state diode technology, the BI 703 delivers reliable, maintenance-free performance for marine, RV, and commercial vehicle applications.
Mastervolt BI 703 Battery Isolator 70A 3-Bank (83007030) Features:
- 3-Bank Simultaneous Charging. Charges up to three independent battery banks from a single alternator, maximizing your charging efficiency.
- Prevents Cross-Discharge. Solid-state diode design ensures batteries cannot drain each other, keeping your starter battery always ready.
- No Moving Parts. Fully solid-state construction means zero maintenance and exceptional long-term reliability.
- Compact, Lightweight Design. High-quality aluminum housing dissipates heat efficiently while keeping weight and size to a minimum.
- Wide System Compatibility. Compatible with both 12V and 24V electrical systems on marine, RV, and commercial vehicles.
- LED Charge Indicator. Built-in LED indicators show charging activity for each bank at a glance.
Mastervolt BI 703 Battery Isolator 70A 3-Bank (83007030) Specifications:
- Max Charging Current: 70A
- Number of Banks: 3
- System Voltage: 12V / 24V
- Voltage Drop: 0.6–0.7V (diode)
- Weight: 2.43 lbs (1.1 kg)
- SKU / MPN: 83007030
