Efficient Charging for Multiple Marine Batteries

The Newmar 2-3-70 Battery Isolator is designed for seamless integration into marine environments, providing dependable and efficient charging for multiple batteries. This heavy-duty isolator ensures automatic charging from one or two alternators and prevents the discharge or 'dumping' of one battery into another. It is suitable for 12-, 24-, or 36-volt negative ground DC systems, making it versatile for various marine applications.

Crafted for durability and reliability, the Newmar 2-3-70 Battery Isolator features conservatively rated diodes and a rustproof anodized aluminum heat sink case. This robust construction ensures long-lasting performance and protection against the harsh marine environment. By charging each battery according to its need, it maintains optimal charge levels without the risk of overcharging.

Key Features

• Efficient Multi-Battery Charging: Allows automatic charging of multiple batteries from one or two alternators.
• Prevents Battery Dumping: Ensures no discharge from one battery to another, maintaining optimal charge levels.
• Durable Construction: Rustproof anodized aluminum heat sink case and conservatively rated diodes for long-lasting use.
• Versatile Compatibility: Suitable for systems up to 48 volts DC, negative ground.
• Complete Installation Kit: Includes stainless steel mounting hardware and protective terminal covers.

Technical Specifications

• Alternator Sources: 2
• Battery Banks: 3
• Max. Amperage Input Capacity: 70 A
• Stud Terminal Size: 6mm
• Dimensions (L x W x H): 6.5" x 4.5" x 3.1"
• Weight: 4 lbs.
• Operating Temperature: -40 to +80°C
• Duty Cycle: Continuous rating to 50°C; derates linearly to 70% at 80°C
• Temperature Rise: 5°C at full rated current (mount vertically for optimum cooling)
• Voltage Drop: 0.7V at 50% load, 0.9V at full load

General Dimensions

• Length: 6.5 inches
• Width: 4.5 inches
• Height: 3.1 inches
• Weight: 4 lbs