![Newmar 2-3-120 Battery Isolator [2-3-120]](https://cdn.shopify.com/s/files/1/0538/9769/1296/files/102296XL.jpg?v=1703060869)
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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
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 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: 120
- Stud Terminal Size: 6mm
- Dimensions (L x W x H): 12.5 x 4.5 x 3.1 inches
- Weight: 5 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
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:
- 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
4.5 ★★★★★
Based on 1746 reviews
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Product Reviews
★★★★★ 5
room divider
Color: Black
all good...ez to assemble
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Great Product that does exactly what it says it will.
Color: Beige, Size: 34"- 3 Panel
I really enjoy this product and it does exactly what it describes. I use it on my balcony. It is effective, but still very lightweight. It is easy to assemble as well. The price point is excellent. Also, I had an interaction with the company about an issue and they were incredibly responsive and helpful, fixing the issue immediately. Highly recommend.
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Reviewed in the United States on April 3, 2026
★★★★★ 5
Great WFH screen for video calls
Color: Black, Size: 22"- 4 Panel
I share a workspace with my hubs since we both work from home. I have the attention span of a 🐿️ and need this so I can focus on my work and not get distracted by him, since he is very amusing to watch. This screen is very lightweight and the panels can move and create a little cubicle around your workspace. I personally loved cubicles & despise open space seating, even at home. The ADHDer in my loves being able to block things away from my field of vision.
These panels also hide any mess behind you, especially if you forget to blur the background on Teams or Zoom calls or if you don’t have the option to change your backgrounds.
This was fairly easy to put together and very easy to move and adjust. The screen is a much better option than a sheet as I’ve seen others use on calls.🤦🏻♀️😂 I’m not sure how it will stand up around rambunctious pets or kids, but fairly certain it takes quite a push to knock it over. We have four cats & I’m pretty sure someone would try to climb this, which is why they’re not allowed in our workspace.
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Reviewed in the United States on April 10, 2025
★★★★★ 4
Difficult to assemble, but a good basic divider
Color: Beige, Size: 22"- 4 Panel
I bought this to use as a background for when I have video calls. I wish I'd ordered the 6- or even 8-panel to block a little more, but that's my own error. It still covers a good portion of the room, so I'll make do, or maybe buy another at a later date to expand it.
It looks ok, if a little plain. The fabric panels have creases in them from being folded and will need to be steamed or ironed out for a nicer look. It would be easy to make your own panels as well, if you're so inclined.
The construction is decent. The frame is lightweight and if you don't angle the base supports the right way it may tip over if you extend it too far. The fabric panels aren't the highest quality, but are sturdy enough. They seem like they would handle being thrown in the wash well.
The only issue I have with it is that it was so difficult to put together. The push latches that connect the poles don't push it well and hurt my hands. The fabric panels are sized to be extremely taut, which makes it very difficult to get them on the bars without forcing the bar to bend slightly.
Overall, this is a good divider if you're looking for something simple and functional without being too worried about aesthetic. It's also a good, inexpensive base if you want to make your own custom panels.
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Reviewed in the United States on August 5, 2025
★★★★★ 5
Great Room divider
Color: Beige, Size: 34"- 3 Panel
Works well in separating my kids play area from my computer/office room. Easy to put together, height is perfect somewhat sturdy, looks great, light weight, not good if you are using it as a door, but if it is to stay in place than it is stable enough.
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Reviewed in the United States on September 3, 2025
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