Fits these Yanmar engines: 2GM • 2GM20 • 2GM20-YUE • 2GM20F • 2GM20F-YUE • 2GMF2YM15 • 3GM • 3GM30 • 3GM30F • 3GMF • 3HM • 3HM35 • 3HM35F • 3HMF • 3JH2 • 3JH2-TE • 3JH3 • 3JH3-E • 3JH4 • 3JH4-E • 3JH5 • 3JH5-E • 3YM20 • 3YM30 • 4JH • 4JH-E • 4JH-HTE • 4JH-TE • 4JH2 • 4JH2-DTE • 4JH2-E • 4JH2-HTE • 4JH2-TE • 4JH2-UTE • 4JH3-E • 4JH3-HTE • 4JH3-TE • 4JH4 • 4JH4-AE • 4JH4-E • 4JH4-HTE • 4JH4-TE • 4JH5 • 4JH5-E • 4JH110 • 4JH80 • 4JH57 • 4LHA6LY • 2QM15 • 2QM20 • 3QM30 • 3QM30(F)
For boaters with large battery banks – especially Lithium batteries – ElectroMaax has introduced a remote rectifier to our GenMAAX alternator 250 12 V and 165 24 V models. This Super High-Output alternator/generator is all you need to survive, covering all energy needs on your boat. The frame is hard black anodized with a special salt water resistant coating that enhances heat dissipation, which is critical for any alternator over 160 amps.
The bolt-on replacement, 250 amp GenMAAX gives you all the output of a large-case alternator in a small case that fits 99% of marine engines. Specifically developed to meet the technical demands of the new generation AGM, Lithium and Gel Batteries, the GenMAAX 250 Super High-Output alternator/generator produces a continuous 195 amps covering most cruisers’ daily energy needs in very short order. Remote rectification has been in use for decades in industrial applications and removing the rectifier out of the rear of the alternator and placing it a few feet away, has many benefits. By far the single biggest benefit is that over 50% of the heat has been removed from the alternator.
Only the heat generated by the stator remains. In addition, the air space now available due to the removal of the rectifier which allows the twin fans attached to the rotor to work more efficiently by greatly enhancing heat dissipation too. With the remote being up to 48” away from the alternator and engine, the device can be located next to the batteries in a generally more cooler and dryer place. Now there are no connections needed at the back of the alternator. In essence we are splitting the alternator in half. This allows for the output of a large frame alternator in a small case alternator frame. Due to no wiring at the back of the alternator (now done at the face of the Remote Rectifier) makes the wiring hookup much simpler too.
Key Features:
- High Energy Output: Delivers a continuous 195 amps, efficiently powering daily energy requirements and accommodating substantial loads simultaneously.
- Compact and Versatile Design: This alternator offers the performance of a large-case alternator within a compact form factor, ensuring compatibility with 99% of marine engines.
- Advanced Battery Compatibility: Specifically developed to meet the technical demands of new-generation AGM, Lithium, and Gel batteries, ensuring optimal performance and longevity.
- Enhanced Cooling System: Equipped with dual internal fans, the GenMaax alternator ensures superior cooling efficiency, maintaining optimal performance even under high loads.
- Idle Load Application: At idle RPM, the alternator applies the necessary load to charge batteries and support additional devices, preventing engine choking and enhancing overall efficiency.
Benefits:
- Reduces Dependence on Auxiliary Power Sources: By providing substantial energy output, it minimizes or eliminates the need for solar panels and portable generators, saving space, weight, and capital costs.
- Seamless Integration: Designed to integrate with existing systems without requiring additional maintenance, simplifying the upgrade process for enhanced energy production.
The GenMaax Foot Mount Alternator/Generator transforms your propulsion engine into a powerful energy generator, ensuring your vessel remains powered efficiently during your maritime adventures.
Go Overboard with the GenMAAXTwo GenMAAX alternators on one marine engine will generate 338AMPS or 4,722 watts in 12V, on a multi-hull or trawler. Four GenMAAX marine alternators will generate 9,000 plus watts, eliminating the need for portable and or permanent back up generators. Hence the name GenMAAX!
* 2.25:1 Ratio, Hot Rating
The frames get anodized with a special salt water resistant coating that radically enhances heat dissipation which is critical with any alternator over 160amps. The frames are manufactured in-house from billet which allows us to make the GenMAAX a perfect fit on the 3.25″ saddle mount, 4″ J-mount and 1″ and 2″ foot mount engines.
The GenMAAX 215 amp alternators were specifically developed to meet the technical demands of the new generation A.G.M, LiFePO4 Lithium, Carbon Foam and Gel Batteries in small banks. The 250 amp Remote rectified alternators are intended for larger Battery banks, especially Life Po 4. Read the many benefits of installing a GenMAAX on your engine if you’re considering eliminating or avoiding installing a back-up gen-set – especially when you combine its high output with solar and wind. The dual posts on the alternators back now makes the unit isolated ground. Plus makes the alternator compatible with either P or N type regularors. Also, no heavy ground cables needed. Applies a load at idle that prevents the engine from choking up. The GenMAAX 165 24 V Super-High-Output Remotely rectified alternator produces a continuous 112 amps at 24 volts which covers most cruisers’ daily energy needs, in very short order. More significantly, it also covers very large loads simultaneously. The 12 V 250 amp version has similar output current but in 12 volts. The simple, bolt-on replacement, 165amp, 24 volt GenMAAX gives you all the output of a large-case alternator in a small case that fits 99% of Yanmar, Volvo Penta and other marine engines. It eliminates or substantially reduces a cruiser’s reliance on inboard and/or portable generators.
Remote Rectifier
For boaters with large battery banks – especially Lithium batteries – ElectroMaax has introduced a remote rectifier to our GenMAAX Super-High-Output alternator 250A 12 V and 165A 24 V models.
Remote rectification has been in use for decades in industrial applications. With the advent of new highly advanced battery technology like our LiFePO4 Advanced Technology Marine batteries, Crystal lead plus super A.G.M like now entering the marine market, these multi benefit features resolve or minimize most of the alternator issues created by these new battery types.
Removing the rectifier out of the rear part of our GenMAAX 250 12 V and the 165 24 V alternators and placing it a few feet away, has many benefits.
The Key Benefits are listed below
By far the single biggest benefit is that over 50% of the heat has been removed from the alternator. Only the heat generated by the stator remains.
In addition, the air space now available due to the removal of the rectifier which allows the twin fans attached to the rotor to work more efficiently by greatly enhancing heat dissipation too.
To further enhance cooling the housing is aluminum and acts as a heat sink.
With the remote being up to 48” away from the alternator and engine, the device can be located next to the batteries in a generally more cooler and dryer place. Now there are no connections needed at the back of the alternator.
In essence we are splitting the alternator in half. This allows for the output of a large frame alternator in a small case alternator frame.
Due to no wiring at the back of the alternator (now done at the face of the Remote Rectifier) makes the wiring hookup much simpler too.
The remote rectifier is three times larger than the bridge rectifier which is found in the standard GenMAAX. The increased number of diodes greatly reduces thermal falloff which is the general cause of reduced power transfer as the alternator (stator rotor) heats up.
As a result, the hot and cold ratings are substantially improved in both cases.
All marine alternators that are subjected to 50% of normal internal heat generation will last significantly longer.
Increases airflow over the stator rotor
Splits the heat in Half 50% in the stator/rotor 50% many feet away in the Remote Rectifier
Only a small field wire and a ground post are located on the back of the alternator, all other connections are on the Remote rectifier simplifying installation.
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