SKU: 24251046284

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

$149.40 $166.00
Save 10%
No.2 Bestseller on airconspareparts.com >

Pay in installments of $41.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.9 ★★★★★
Based on 30 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
J
Verified Purchase
jm
Chelsea, US
★★★★★ 5
Light weight, and high quality!
Size: 17" (2 x 4.0Ah)
I had concerns when we got this mower. It isn’t self propelled, and is smaller than our last one, but it really surprised me. We have a lot of yard, and are on a hill, which added to our concerns. It is lightweight, which makes it really easy to use. You can raise and lower the deck with a couple of fingers. It even goes up the hill easily. The only downside is the battery life. It comes with 2 24v batteries, and needs both to operate. They last about 30 min. My thought was to get a second set of batteries, but they cost as much as another mower. I like the easy maintenance, and light weight, and that it has power and is quiet. Great mower.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2025
J
Verified Purchase
Jackie Neubauer
Dallas, US
★★★★★ 5
Great electric mower for the price
Size: 17" (2 x 4.0Ah)
This was one of my favorite purchases this year. The November isn't noisy, looks much better than my previous electric lawnmower, and was surprisingly powerful for what it was. Out of the box, it was super easy to set up. My only gripe is that I wish the batteries would last a little longer. Currently, it lasts about 45 min per charge.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 22, 2025
N
Verified Purchase
Niklaus Alexander we cc'd ander
Lexington, US
★★★★★ 3
Lawnmower
Size: 17" (2 x 4.0Ah)
Bought this and two extra batteries. One battery turned out to be bad and won't charge. The lawnmower so far is great. Cuts good and very lightweight. Would recommend it, the batteries not so much.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
J
Verified Purchase
jim hughes
Grantham, US
★★★★★ 5
It actually does the job pretty well
Style: Lawn Edger/Tool Only
I floundered around for a few minutes, then figured out how to use it, and then made pretty good progress on my overgrown sidewalks. Yes, it uses up batteries but that's because it actually has enough power to do the job, unlike many "homeowner" tools. The handle is long enough so I'm not painfully bent over while using the tool, and it feels solid and stable. One thing I really appreciated is that it doesn't have a typical pointless, awkward "safety" interlock button that you're supposed to keep mashed down with your thumb the whole time - it's a comfortable one-finger trigger. Another good 20v tool from Worx. I'm "in".
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 10, 2024
K
Verified Purchase
Kent Steiner
Lowell, US
★★★★★ 5
Quit spinning
Style: Lawn Edger/Tool Only
Worked great until it guilt working.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 14, 2025

recommand products

DIY KIT: Sliding Chain Bracelet Set of Three - Turquoise/Neon Mix
29.00
Size 11/0 Miyuki Round- 92018 Matte Metalic Purple Iris
13.95
DIY KIT: Holly Hoops - Silver
15.95
Snowflake Pointelle Onesie
67.50
.5mm S-Lon Cord 4 Pack: Color Pop
16.95