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Description
Promariner Proisocharge 250 0 Voltage Loss Isolator 12v 1 Alternator 2 BatteriesProMariner ProIsoCharge250 Zero Volt Loss Isolator 1 Alternator 2 Batteries Model: 23123 ProMar Digital Performance Zero Volt Loss Isolation and Charging All digital design delivers active battery status and automatic engine battery health priority while digitally distributing the full output of your engines alternators. Intelligent Isolation and Charging Software Control ProIsoCharges intelligent software control provides priority charging to a
ProMariner ProIsoCharge250 Zero Volt Loss Isolator 1 Alternator 2 Batteries
Model: 23123-
ProMar Digital Performance Zero Volt Loss Isolation and Charging
All digital design delivers active battery status and automatic engine battery health priority 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 that is under load (i.e house bank or power inverter bank) by taking fully charged batteries off line and priority charging discharged battery banks, while insuring the health of the engine batteries. - Real Time LED Status Indicators,/b>
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 voltage conditions that may be present on any one of the battery banks connected (that are also connected to other charging sources gen set combi etc). -
Ignition Controlled
Distributed On Demand™ battery bank management will only activate with ignition power on. -
Advance Regulator Ready
Advance regulator remote sense connection provided for precision alternator algorithm control for alternators equipped with an advanced regulator. -
Easy Installation
Modular design for easy install. Includes all terminal stud insulator boots and protective snap on safety cover. -
Built-in Safety
Ignition protected and waterproof to IP66
ProIsoCharge delivers digitally controlled alternator output distribution while protecting the health of engine start batteries, isolating and charging up to 3 other independent battery banks off of a single alternator (model specific). For dual engine applications, ProIsoCharge offers an exclusive 2 alternator input model with up to 4 battery banks. Save space and time by eliminating traditional diode based isolators and ancillary voltage sensitive relays or solenoids, isolating and charging multiple battery banks simultaneously. Eliminate typical alternator voltage loss of up to .6 VDC that is commonly associated with traditional diode based isolators. Intelligent zero volt loss isolation insures fully charged batteries and faster charge times. Installed with the ProNauticPSeries, 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.
Specifications| System Voltage | 12vDC |
| Alternator Input | 1 |
| Battery output | 2 |
| Dimensions | 6.95"(l) x 5.875"(w) x 3.125"(h) |
| Max DC Amps | 250 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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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
4.6 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Small pump works as advertised. Needs longer hose
Color: Orange, Number of Items: 1, Color: Orange, Number of Items: 1
This is a physically small, light pump which matches my light duty application. I have a Solterra EV. While all cars need the tire pressure set properly, it is more important on an EV. I need to change the pressure by 2 or 3 pounds at a time on 4 tires to maintain 38psi. The pump performs beautifully. It pumps up to the 38psi I set on the pump and stops right on the button. I verified the pressure with my pressure gauge which agrees with the tire pressure monitor in the car. The pump performs accurately.
The 5 button control on the device is implemented quite well making it easy to operate. It only took a minute to figure it out.
My only complaint is the hose is too short. All the battery operated pumps I see have a hose that is too short. I purchased a longer hose from Amazon:
https://www.amazon.com/dp/B0D2X52HY8?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_2&th=1
The longer hose allows me to stand instead of bend over if I am holding the pump. I can set the pump down on the garage floor even if the schrader valve is at the 12 o’clock position on my 19 inch tires. The hose is quite flexible and easy to use. I understand some rims have tight quarters around the valve. Make sure there is room around the valve for this chuck.
Overall, this does what I need and consumes only a small space in my cargo area. Quite pleased.
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Reviewed in the United States on March 30, 2026
★★★★★ 5
Works great!
Color: Orange, Number of Items: 1
This works great! It is kind of bulky and big but I guess that's for the air. I use it for everything and it's portable to take on the go. Love all the attachments that it comes with. Very versatile. Display reads perfectly and correct and the inflation is super fast. Will definitely buy again!
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Reviewed in the United States on May 27, 2026
★★★★★ 4
Works reasonably well, though with an Achilles' Heel.
Color: Orange, Number of Items: 1
I've had to use this on tires that were very low, both on cars and on bicycles. It works exactly as you'd expect and absolutely has no trouble handling the much higher pressures of bike tires as well as the much larger volumes of typical car tires. I kind of wish it came with some sort of pouch or something because the box it comes in is the only means to store it with all of its attachments,; Because of how tightly it's all packed in the box, it's a bit of a pain getting it all arranged neatly in the box each time, but that's a minor quibble.
If Amazon reviews allowed fractional star earnings, I'd probably rate this more accurately a 3.75 or 3.875. It still has two little flaws. One is the accuracy of its pressure gauge. It always seems to fall just a little short. For example, on my car, recommended cold pressure is 36 psi in front and 39 in the back. I tried pumping to those levels, and everything looked fine. But immediately afterwards, the TPMS sensors would tell me I'm at 35 and 37. Likewise, I like to keep my bike tires at around 42 psi for my commuter bike and around 70 psi for a road bike. After using this little guy, and double checking with a separate gauge, I was getting closer to 40 psi and 67.5 psi respectively. I'm inclined to believe it's a calibration/QC problem and there might be examples that overinflate, too. So while I got one that was overestimating the actual pressure, you might get one that has the opposite issue. Still, close enough that I'm not docking it a full point for this, but a faction of a point.
The biggest weakness of this device is really a double-edged sword -- its compactness. The fact that it is compact means that it fits very nicely in the under-trunk storage or even a glovebox in some cars. Problem is that when the device is small, so too is the battery. There's just no escaping this. I had a moment with all 4 tires on my car being on the low side in terms of tire pressure. They were all underinflated by about 6-7 psi below spec and so I just used this pump to get them all up to that target pressure. Even with a full charge, I could not get all 4 tires all the way up to target pressures. I could get the 4th tire about halfway there, but that was where the battery died. That's just a reality you will probably have to live with. Given that it is such a small device, this is basically inevitable, so there's no sense complaining about it, but it is a reality you should be aware of.
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Reviewed in the United States on November 6, 2025
★★★★★ 5
An Easy DIY Headlight Restoration Kit with Strong Appeal
Size: 1 Count (Pack of 1)
This restoration kit is appealing because it offers a way to improve cloudy or oxidized headlights without needing power tools. That makes it accessible for people who want to do the job themselves without investing in extra equipment. Cerakote also has a strong reputation in protective coatings, which gives this kit added credibility compared with generic restoration products.
The biggest selling point is the promise of restoring clarity while adding a protective finish to help maintain the results. If the process is easy to follow and the wipes are effective, this can be a worthwhile DIY option for improving both appearance and nighttime visibility. For vehicle owners with faded headlights, this seems like one of the more convenient restoration approaches available.
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Reviewed in the United States on May 18, 2026
★★★★★ 5
Perfect
Size: 1 Count (Pack of 1), Size: 1 Count (Pack of 1)
Honestly one of the best headlight restoration kits I’ve used. The instructions were simple, the process was easy to follow, and the results were way better than expected. My headlights were heavily oxidized and yellow, and after using the 2000/3000 grit sanding steps with the ceramic coating, they looked almost brand new again. The ceramic finish made them crystal clear and glossy. Definitely worth the money and much better than cheap polish-only kits.
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Reviewed in the United States on May 22, 2026