Newmar 1-2-120a Isolator 1ait 2batt 120amp
SKU: 50510759107

Newmar 1-2-120a Isolator 1ait 2batt 120amp

Sale price$104.44 Regular price$116.05
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

Newmar 1-2-120a Isolator 1ait 2batt 120ampThese heavy duty isolators allow charging multiple batteries automatically from one or two alternators, and prevent discharge or 'dumping"" of one battery into another. Each battery is charged according to its need without overcharging. rated for 12 48 volt negative ground DC systems. feature conservatively rated diodes and a rustproof anodized aluminum heat sink case. Models are available for 70, 120 and 165 amp alternators. Features: Heavy duty

These heavy duty isolators allow charging multiple batteries automatically from one or two alternators, and prevent discharge or 'dumping"" of one battery into another. Each battery is charged according to its need without overcharging. rated for 12-48 volt negative ground DC systems. feature conservatively rated diodes and a rustproof anodized aluminum heat sink case. Models are available for 70, 120 and 165 amp alternators.

Features:

  • 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

Performance Specifications

  • Operating temperature: -40° to +80° C
  • 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

Note: These battery isolators are not compatible with self exciting alternators. 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: 50510759107

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4.5 ★★★★★
Based on 1780 reviews
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E
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Eve
Alexandria, US
★★★★★ 1
Lost its quality after gaining popularity
Size: 1 count (Pack of 12)
I’ve been subscribed to this brand for at least 2 years now. It used to be heavy duty, now they switched to cheap thin carton like everyone else has. No point to overpay for average quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 12, 2025
R
Verified Purchase
Rocky Cronkhite
Lowell, US
★★★★★ 5
Great product
Color: 3675 Silver Blue, Color: 3675 Silver Blue
This watch is beautiful. And feels great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
J
Verified Purchase
JJ
Fort Morgan, US
★★★★★ 1
Junk!
Color: 3675 ALL Silver
Good luck getting the back plate back in once you change the battery! You get what you pay for so spend the extra money and buy a better watch not made in China.
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Reviewed in the United States on May 25, 2026
J
Verified Purchase
John S. Willard, Jr.
Port Orchard, US
★★★★★ 4
Really nice watch!
Color: 3675 ALL Black
Really nice and clean looking watch. Fairly easy to adjust the watch band, with a little patience. Item description stated battery operated, but I don’t think it is as there is no indication that it has a battery in it. Other than that, really decent watch! I would have given it a five star rating if it were battery powered.
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Reviewed in the United States on March 23, 2026
R
Verified Purchase
Ralph
Omaha, US
★★★★★ 5
Great price
Color: 3675 Silver Grey
The watch looks like it should cost more than the actual price. It catches people's eye and so far it keeps accurate time. Keep in mind I've only had the watch about two weeks. Of my 10 every day watches this one is the most attractive.
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Reviewed in the United States on December 5, 2025

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