SKU: 30887029074

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

Sale price$113.85 Regular price$126.50
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Description

ProMariner ProIsoCharge Battery Isolator 120Amp 1-Alt 2-Bat - 12VProIsoCharge 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: 30887029074

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4.5 ★★★★★
Based on 16 reviews
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bigwill
Birmingham, US
★★★★★ 5
Great magnet
Size: Medium 16in x 1in
Strong magnet, sturdy strap
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
J
Verified Purchase
John
Port Orchard, US
★★★★★ 5
Awesome!
Size: Large 24in x 1.25in
These straps are exactly what I needed! I got them to hang my extension cords in my truck and they worked so well, I got three more to hang my water hoses in my truck also!
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Reviewed in the United States on May 7, 2026
T
Verified Purchase
T.J.88
Lexington, US
★★★★★ 5
Nice product with lots of uses. Strong magnet and great strap
Size: Medium 16in x 1in
Used this to replace the Klein magnetic strap on my C-800 multimeter. (This is not easy and takes a lot of manipulation, but if you can get it in the plastic loop on the multimeter up past where the loop in the strap end is sewn, you can use a screwdriver through that to yank it the rest of the way). Once it’s done it’s beautiful! This thing could hold 2 dozen multimeters and it’s MUCH longer without being too long! Otherwise it’s just an awesome strap anyway. It holds a lot of weight (I didn’t test to spec) but definitely enough for what one would expect! I have both sizes, the smaller one is attached to the multimeter and the larger holds a cord to the side of my toolbox. (Tip)- to prevent slipping just put the magnetic base on the other side of the metal by the box tray and let the strap hang over (if attached to a toolbox). It adds to the weight it can hold too. (Just physics). That will work on anything vertical and thin enough to get around with enough slack to still use the strap. 👍. Would definitely buy another
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Reviewed in the United States on August 27, 2025
D
Verified Purchase
dd
Massapequa, US
★★★★★ 5
An effective organizing solution for missions involving movable equipment
Size: Medium 16in x 1in
Following the compromised operation in Prague, I was tasked with organizing equipment for the embassy annex in Vienna. The VELCRO Brand Magnetic Straps provided an essential solution for securing various tools and equipment to metal surfaces, facilitating quick access during critical moments. The durability of the strap, combined with an impressively strong magnet, ensured that our gear remained in place despite variable operational conditions. However, the loop formed by the strap could be larger; it limited our options for certain garden hoses, which became a notable drawback. Overall, the robust quality of the straps enhances logistical efficiency in high-pressure scenarios. Katarina's earlier input on this product proved beneficial, although I detected apprehension in her demeanor while discussing its application. Recommendation: An effective organizing solution for missions involving movable equipment, with minor adjustments needed for cord size.
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Reviewed in the United States on December 30, 2025
K
Verified Purchase
Kindle Customer
Houston, US
★★★★★ 5
Sturdy and Reliable
Size: Medium 16in x 1in
Very sturdy and holds up well with regular use. It feels solid and well-made, not flimsy or like it’s going to wear out quickly. Definitely something you can rely on without worrying about it falling apart.
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Reviewed in the United States on May 1, 2026

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