SKU: 24251046284

Newmar 2-3-70 Battery Isolator [2-3-70]

Sale price$149.40 Regular price$166.00
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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23

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Description

Newmar 2-3-70 Battery Isolator [2-3-70]2 3 70 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

2-3-70 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: 70
  • Stud Terminal Size: 6mm    
  • Dimensions (L x W x H): 6.5 x 4.5 x 3.1 inches
  • Weight: 4 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

This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.
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: 24251046284

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MiniKa
Louisville, US
★★★★★ 5
Perfect fit for a medium build 5ft 6
Size: Medium, Color: Light Grey
I am happy with this grey color Blazer. The fit is spot on- I am 5’6” medium build, and it fits comfortably without feeling too tight or too loose. The material feels high quality and has a nice weight into it. Making it look more premium than expected. It’s also very comfortable to wear for extended periods, whether for work or going out. Overall great value and a solid addition to my wardrobe. Would definitely recommend!
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Reviewed in the United States on May 14, 2026
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Rob Douglas
Los Angeles, US
★★★★★ 5
Great jacket!
Size: 4X-Large, Color: Dark Blue
Nice jacket for warmer weather, very comfortable, fit me well. I'm a big guy and wear a 54 regular in tailored sport coats. The 4XL fit nearly identical to a 54 regular. Adds some class to a nice outfit without making it formal, which is exactly what I was looking for.
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Reviewed in the United States on May 12, 2026
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Professor H. F.
West Palm Beach, US
★★★★★ 4
Comfortable & Right Fit
Size: X-Large, Color: Light Grey, Size: X-Large, Color: Light Grey
Light Grey, XL *Item returned before use due to color change* Quality every day blazer. Good material didn't feel cheap or come with lose threads. When buttoned the blazer laid flat, I had room in chest and stomach but didn't seem baggy. Shoulders fit across without pinching or buckling around pads. Arm length didn't hang past wrist when arms were at my side and also didn't pull too high when raising. My measurements: More of a solid, muscular build but still very average. 6' 215# Chest 44" (circumference) Shoulders 20" (length taken from back) Waist: 38" (circumference) Arms: 26" (length taken down outside of arm)
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Reviewed in the United States on May 3, 2026
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Audiophile 1
Chelsea, US
★★★★★ 5
Fits well
Size: Large, Color: Black
I’m a 42 long in a suit, broad shoulders and this fit very well. Great value for the price especially on sale. Lightweight and stylish. This is my second purchase of the same product in a different color
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Reviewed in the United States on May 12, 2026
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Deanna Kazembe
Carnegie, US
★★★★★ 5
Perfect blazer!
Size: XX-Large, Color: Navy Blue
Husband bought this blazer for a wedding and it fits perfectly! It is comfortable and the color was great!
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Reviewed in the United States on May 13, 2026

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