SKU: 62854632333

Newmar 2-3-120 Battery Isolator [2-3-120]

Sale price$266.85 Regular price$296.50
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Ships within 48 hours · Estimated delivery Sep 9 - Sep 14

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Description

Newmar 2-3-120 Battery Isolator [2-3-120]2 3 120 Battery Isolator This heavy duty isolator allows charging multiple batteries automatically from one or two alternators and prevents the discharge or dumping of one battery into another. Each battery is charged according to its need without overcharging and is rated for 12 , 24 , or 36 volt negative ground DC systems. Features: Conservatively rated diodes and a rustproof anodized aluminum heat sink case. Heavy duty construction Rated for

2-3-120 Battery Isolator

This heavy-duty isolator allows charging multiple batteries automatically from one or two alternators and prevents the discharge or ‘dumping” of one battery into another. Each battery is charged according to its need without overcharging and is rated for 12-, 24-, or 36-volt negative ground DC systems. 

Features:

  • Conservatively rated diodes and a rustproof anodized aluminum heat sink case.
  • Heavy-duty construction
  • Rated for systems up to 48 volts DC, negative ground
  • Rust-proof anodized aluminum case
  • Stainless steel mounting hardware is provided
  • Protective covers are provided for terminals

Specifications:

  • Alternator Sources: 2
  • Battery Bank: 3    
  • Max. Amperage Input Capacity: 120  
  • Stud Terminal Size: 6mm    
  • Dimensions (L x W x H): 12.5 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

*Note: These battery isolators are not compatible with self-exciting alternators. The alternator must have an external excitation lead. Please consult the manufacturer of your alternator if you are unsure of your configuration


Quick Guide (pdf)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 62854632333

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Gary J
Whiting, US
★★★★★ 5
08 CRV filter
Factory look, size and easy install. Good filter material.
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Reviewed in the United States on September 16, 2025
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Jake Eddy
Charlottesville, US
★★★★★ 5
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Fits. Works.
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Reviewed in the United States on December 13, 2025
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D.T
West Palm Beach, US
★★★★★ 5
Product quality.
This is a 1st time we are using this product; it seems working as it should, build quality is good for the price.
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Reviewed in the United States on September 11, 2025
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RedLove1969
Massapequa, US
★★★★★ 5
Great item!
Great item a must buy 😁
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Reviewed in the United States on April 21, 2026
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SirchainsawCharlie
Omaha, US
★★★★★ 5
Fits 2007 Honda crv.
It fits my 2007 Honda crv and sealed very well.
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Reviewed in the United States on April 15, 2026

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