SKU: 73934781406

ProMariner ProIsoCharge Battery Isolator 120Amp 1-Alt 2-Bat - 12V [23121]

Sale price$129.59 Regular price$143.99
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Description

ProMariner ProIsoCharge Battery Isolator 120Amp 1-Alt 2-Bat - 12V [23121]ProIsoCharge Series ModelProIsoCharge120 12 Part No. 23121 System Volts DC 12 Max DC Amps 120 Amp Alternator Input1 Battery Outputs 2 Size 5. 35"(l) x 5. 875"(w) x 3. 125"(h) Weight2 lbs Significantly Smarter ProIsoCharge delivers digitally controlled alternator output distribution while protecting the health of engine start batteries. An industry changing design that provides intelligent and zero voltage loss isolation, charging of up to 3 other

ProIsoCharge Series

ModelProIsoCharge120 1•2
Part No. 23121
System Volts DC 12
Max DC Amps 120 Amp
Alternator Input1
Battery Outputs 2
Size 5.35"(l) x 5.875"(w) x 3.125"(h)
Weight2 lbs

Significantly Smarter...
ProIsoCharge delivers digitally controlled alternator output distribution while protecting the health of engine start batteries. An industry changing design that provides intelligent and zero voltage loss isolation, charging of up to 3 other battery banks off a single alternator (model specific). For dual engine applications, ProIsoCharge offers an exclusive 2 alternator input model with up to 4 battery banks. Smart enough to provide priority charging to a battery bank that's under load by taking fully charged batteries off line. The all-in-one design eliminates the need for multiple voltage sensitive relays to charge multiple battery banks simultaneously, saving space, installation time and cost. Ensuring fully charged batteries and faster charge times, ProIsocharge eliminates the typical alternator voltage loss of 0.6VDC that's commonly associated with traditional diode based isolators. Installed with the ProNauticP Series, a boat owner can enjoy the full benefit of shore power and on the water charging. Designed to provide more time on the water enjoying what you like most... boating.

Intelligent Alternator Power Distribution System

ProMar Digital Performance Zero Volt Loss Isolation and Charging
All digital design delivers active battery status and automatic engine battery healthpriority while digitally distributing the full output of your engine's alternators.

Intelligent Isolation and Charging Software Control
ProIsoCharge's intelligent software control provides priority charging to a battery bank thatis under load (i.e house bank or power inverter bank) by taking fully charged batteries off lineand priority charging discharged battery banks, while insuring the health of the engine batteries.

Real Time LED Status Indicators
Highly visible LEDs to indicate alternator power is present and battery bank charging status.Fault LEDs include: high and low alternator output, over-voltage protection and high voltageconditions that may be present on any one of the battery banks connected (that are alsoconnected to other charging sources gen set combi etc).

Ignition Controlled
Distributed On Demand™ battery bank management will only activatewith ignition power on.

Advance Regulator Ready
Advance regulator remote sense connection provided for precision alternatoralgorithm control for alternators equipped with an advanced regulator.

Easy Installation
Modular design for easy install. Includes all terminal stud insulator bootsand protective snap on safety cover.

Built-in Safety
Ignition protected and waterproof to IP66. FIVE YEAR

WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.


Quick Guide (pdf)
Owner's Manual (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: 73934781406

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Amazon Customer
Natrona Heights, US
★★★★★ 5
Keeps phone cool off phone charging pads!
I bought this magnetic phone mount for my Tesla Model X and it works great. The magnet is extremely strong and holds my phone securely, even over bumps and rough roads. Once it’s attached, the phone doesn’t move at all. Installation was quick and easy, and it fits the Model X interior nicely without looking out of place. It keeps the phone in a convenient spot for navigation or music without blocking the main screen. Overall, it’s a solid, well-made mount that does exactly what it’s supposed to do. If you have a Model X and want a strong magnetic phone mount, this is a great buy.
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Reviewed in the United States on January 11, 2026
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Verified Purchase
rania
San Leandro, US
★★★★★ 5
Super Strong Magnet & Perfect Fit for My Tesla
I’m really happy with this Tesla phone mount. The magnet is extremely strong—my phone stays in place even when I’m driving on bumpy roads. Installation was quick and easy, and it attaches securely without blocking the screen or getting in the way. I love how clean and minimal it looks in the car. The rotation is smooth, and it makes it easy to check maps or take calls hands-free. If you want a reliable and sturdy phone mount that matches the Tesla interior, this one is perfect. Highly recommend!
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Reviewed in the United States on November 27, 2025
M
Verified Purchase
Miguel Frias
Louisville, US
★★★★★ 4
Good quality, outstanding customer service
The mount is stylish; it looks great in a Tesla. The quality is good. However, the 2025 version broke after 1 year of use, which they fixed in 2026. The customer service is great!
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Reviewed in the United States on May 21, 2026
L
Verified Purchase
Luke Kathman
New York, US
★★★★★ 5
10/10
I picked up the Tesla Phone Mount MagSafe Car Mount for my car, and it’s been fantastic. The magnetic strength is impressive — even on bumpy roads my phone stays firmly in place without shifting or slipping. This mount works smoothly with my iPhone (MagSafe cases snap right on), and it’s also easy to use with other phones when I switch drivers. Installation was quick and simple — just stick it where you want it and you’re ready. The mount holds the phone at a great viewing angle for navigation and calls, and I love being able to pop the phone on and off with one hand. The magnets feel strong enough that I don’t worry about the phone falling even during quick turns. Overall, this MagSafe mount has been reliable, secure, and convenient — a great upgrade for everyday driving.
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Reviewed in the United States on February 3, 2026
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Verified Purchase
Weekend Warrior
Bozeman, US
★★★★★ 3
Good Mount / Poorly Connected Magnet
Good product. It fits well on my Model Y screen. It worked fine for 3 months. but then the magnet became loose from the ring. I like the product so instead of discarding it thought of using glue to stick the magnet back to the ring. BUT it didn’t work. So now it has been a frustrating experience. I may choose to discard a product that has a strong mount, but the one important part (magnet) not working correctly.
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Reviewed in the United States on April 5, 2026

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