Pay in installments of $74.62 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jun 11 - Jun 16
For Your Every Summer RSVP, with Code: SUMMER15
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
![Newmar 2-3-120 Battery Isolator [2-3-120] Newmar 2-3-120 Battery Isolator [2-3-120]](https://cdn.shopify.com/s/files/1/0611/7297/3739/files/102296XL.jpg?v=1703052551)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.8 ★★★★★
Based on 2005 reviews
Sort
Product Reviews
★★★★★ 5
It’s good
Size: 300A Fuse Holder
It does it’s job.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2026
★★★★★ 4
Cover too loose.
Size: 300A Fuse Holder
Nice looking, decent quality, versatile for different gauges. My only complaint with this holder is the cover doesn’t stay on very well, bought 3, and all 3 pop off easily, you will need to zip tie on.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026
★★★★★ 5
Works as it should.
Size: 300A Fuse Holder
I’ve had several of these in my build for over a year now. Zero issues.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
★★★★★ 5
Good brand
Size: 300A Fuse Holder
Good product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 5, 2025
★★★★★ 5
good product
Better then expected
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
recommand products
750ml Full Gloss Broccoli Brown No.W108
31.00
Trade Winds Motel Round XL, Automotive, XL Sign, 28 X 28 Inches
100.00
Kool Kat Kustoms, Automotive, Vintage Metal Sign, 15 X 12 Inches
27.50
Santa Monica Pier XL, Automotive, Round Metal Sign, 28 X 28 Inches
99.00
Mels Daytime, Metal Sign, Metal Sign, 12 X 15 Inches
27.50

![Snubber TWIST - Tar Black - Individual [S51102] Snubber TWIST - Tar Black - Individual [S51102]](https://cdn.shopify.com/s/files/1/0611/7297/3739/files/102352XL.jpg?v=1701134265)
![Snubber FENDER - Black - Pair [S51202] Snubber FENDER - Black - Pair [S51202]](https://cdn.shopify.com/s/files/1/0611/7297/3739/files/102361XL.jpg?v=1701134329)
![Newmar 1-3-70 Battery Isolator [1-3-70] Newmar 1-3-70 Battery Isolator [1-3-70]](https://cdn.shopify.com/s/files/1/0611/7297/3739/files/102297XL.jpg?v=1703052559)
![Newmar 2-3-70 Battery Isolator [2-3-70] Newmar 2-3-70 Battery Isolator [2-3-70]](https://cdn.shopify.com/s/files/1/0611/7297/3739/files/102299XL.jpg?v=1703052573)