SKU: 47834802323

Newmar 1-2-120 Battery Isolator [1-2-120]

Sale price$104.40 Regular price$116.00
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Ships within 48 hours · Estimated delivery Sep 11 - Sep 16

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Description

Newmar 1-2-120 Battery Isolator [1-2-120]1 2 120 Battery Isolator This heavy duty isolator allows multiple batteries to charge 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. This model is a 120 amp alternator. Features: Conservatively rated diodes and a rustproof anodized aluminum heat sink case

1-2-120 Battery Isolator

This heavy-duty isolator allows multiple batteries to charge 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. This model is a 120-amp alternator.

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 provided
  • Protective covers provided for terminals

Specifications:

  • Operating Temperature: -40 to +80°
  • Duty Cycle: Continuous rating to 50° C Derate linearly to 70% @ 80° C
  • Temp. Rise: 5° C at full rated current (mount vertically for optimum cooling)
  • Voltage Drop: 0.7V @ 50% load, 0.9V @ full load
  • Alternator Sources: 1
  • Battery Bank: 2
  • Max. Amperage Input Capacity: 120
  • Stud Terminal Size: 6mm
  • Dimensions (L x W x H): 6.5" x 4.5" x 3.1"
  • Weight: 3 lbs.

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

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: 47834802323

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4.1 ★★★★★
Based on 29 reviews
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A
Verified Purchase
ABF
Charlottesville, US
★★★★★ 1
Looks nice. Doesn't work!
Color: color AA
This thing is cheap trash. The inner ring keeps popping off into the food. If you don't keep it tight, while peppercorns come out. It's going right in the trash where it belongs!
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Reviewed in the United States on April 8, 2026
A
Verified Purchase
Amazon Customer
Alexandria, US
★★★★★ 3
Works but quality of top doesn’t seem long lasting
Color: color AA
I bought this as a replacement for a grinder that came in a similar set I had that broke. This grinder works alright, but it is not as good quality. I will not be returning the item, but also will not purchase this grinder again.
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Reviewed in the United States on November 14, 2025
M
Verified Purchase
Michael cannon
Phoenix, US
★★★★★ 5
Great pepper grinder
Color: color AA
Easy to use
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Reviewed in the United States on March 20, 2026
J
Verified Purchase
Jasper Balraj
Grantham, US
★★★★★ 5
Functions well and looks good
Good one for the price.
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Reviewed in the United States on January 18, 2026
B
Verified Purchase
Barcap
Pawtucket, US
★★★★★ 5
Attractive and easy to use adjustable pepper grinder
Really nice glass pepper grinder. Easy to use, including 2 options to adjust coarseness. Includes a funnel to make refilling container a snap. Highly recommend.
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Reviewed in the United States on November 9, 2025

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