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Lab Tested Newmar 1-3-165 Battery Isolator [1-3-165] - Claim Yours [gIQyKbp9]

$56.99 $182.99 -69%

Newmar 1-3-165 Battery Isolator: The Ultimate Solution for Multi-Battery Systems The Newmar 1-3-165 Battery Isolator is a robust and reliable device designed to enhance the performance and longevity of your multi-battery system. This isolator allows

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Lab Tested Newmar 1-3-165 Battery Isolator [1-3-165] - Claim Yours [gIQyKbp9]

Newmar 1-3-165 Battery Isolator: The Ultimate Solution for Multi-Battery Systems

The Newmar 1-3-165 Battery Isolator is a robust and reliable device designed to enhance the performance and longevity of your multi-battery system. This isolator allows for the automatic charging of multiple batteries from one or two alternators, ensuring that each battery receives the precise amount of charge it needs without overcharging. With its versatile compatibility for 12-, 24-, or 36-volt negative ground DC systems, this isolator is an essential component for any vehicle or recreational vehicle (RV) with a complex battery setup.

Key Features and Specifications

The Newmar 1-3-165 Battery Isolator is built to withstand the demands of heavy-duty applications. Its conservatively rated diodes and rustproof anodized aluminum heat sink case provide exceptional durability and reliability. The isolator is rated for systems up to 48 volts DC, negative ground, and includes stainless steel mounting hardware for secure installation. Key features include:

  • Heavy-duty construction for long-lasting performance
  • Rated for systems up to 48 volts DC, negative ground for versatile use
  • Rust-proof anodized aluminum case for protection against corrosion
  • Stainless steel mounting hardware for secure installation
  • Protective covers for terminals to prevent accidental shorts

Benefits and Practical Uses

This battery isolator not only prevents the discharge or 'dumping' of one battery into another but also ensures that each battery is charged according to its specific needs. This feature is particularly beneficial for RV owners who rely on multiple batteries for various functions, such as starting the engine, providing power to amenities, and recharging devices. With a maximum amperage input capacity of 165, this isolator can handle high currents, making it suitable for a wide range of applications. Additional specifications include:

  • Alternator Sources: 1
  • Battery Bank: 3
  • Stud Terminal Size: 6mm
  • Dimensions (L x W x H): 9 x 4.5 x 3.1 inches
  • Weight: 5 lbs.
  • Operating Temperature: -40 to +80 degrees
  • Duty Cycle: Continuous rating to 50 degrees C Derate linearly to 70% @ 80 degrees C.
  • Temp. Rise: 5 degrees C at full rated current (mount vertically for optimum cooling)
  • Voltage Drop: 0.7V @ 50% load, 0.9V @ full load

What Our Customers Say

February 7, 2026

Absolutely no complaints!

Very impressive for what it costs.

- Leilani Y..

February 7, 2026

Absolutely no complaints!

Very pleased with this purchase.

- Lynn D..

February 7, 2026

Absolutely no complaints!

The quality is extremely impressive.

- Julia Q..

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