E-Maax External Smart Voltage Regulators

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Electromaax delivers a bold new solution for marine DC charging control for boats with its E-MAAX series of smart multi-stage voltage regulation systems.

Basic Emaax marine engine external smart charge controllerUnlike most marine voltage regulators the E-MAAX is a modular system which allows the controller to live in the engine compartment or in another out-of-the-way location. All this while the user-dependent features of the charge control system are accessible at the E-MAAX’s convenient digital remote panel.

Before you buy: Read below to learn more about E-Maax External Smart Regulators and discover how a smart, exterior regulator, protects your batteries from incorrect voltage, and substantially extends their lifespan.

If you’re ready to buy: View the independent features of the E-MAAX Basic, Advanced and Advanced Pro smart regulators below:

Reduce or eliminate dependency on all energy-generating devices

Do you want a 100 amp alternator/generator under way, a 200+ amp alternator/generator on the hook and in certain circumstances to turn the alternator/generator off entirely? With the E-Maax Smart external regulator, now you can.

Throw Away Your Programming Screwdriver

E-Maax marine smart regulator panel(Or, at least put it back in the toolbox.) The E-MAAX remote provides all of the access you need to ensure optimal charge control from the comfort of your helm or nav station.

Using the simple five-button control, programming is as simple as choosing the preset battery program that best matches your vessel’s batteries.

Select between programs for standard flooded, deep-cycle flooded lead acid, gel, AGM, spiral-wound AGM or TPPL batteries.

User selectable battery programs automatically set target charging voltages, time-at-stage, field threshold, temperature compensation values and other battery-specific definitions that help ensure optimal charging.

Bright and intelligent display

With up to 32 digits available to provide operational data and programming information, the EMAAX jumps light years ahead of current voltage regulation technology.

Messages are clear and in meaningful language. The LCD display can auto-adjust for optimal viewing in all lighting conditions, or you can choose one of eight brightness settings to meet your preference.

Five well-marked buttons provide simple, intuitive navigation through the E-MAAX’s working and programming modes, and unlike scrolling displays typical of other products, you can move back and forth to find exactly the information you’re looking for.

Advanced system controls at your fingertips

All applications are different, and the E-MAAX offers a wealth of advanced programming functions that allow the user to tailor charging to meet every special need.

The E-MAAX offers the ability to be programmed for 12 or 24-volt systems, or to be used with positive or negative type field excitation.
In addition, all of the preset battery programs can be fully modified to meet unique charging conditions.

Simple to install

The modular E-MAAX system provides the unique ability to install both the remote panel and the charge controller module in locations where they are well protected from both heat and moisture.

System components are supplied with tinned multi-conductor cables for added convenience.

All circuitry in the remote panel, charge controller module and individual sensor bugs are bathed in a protective epoxy coating to ensure optimal protection.

Match alternator output to your needs

Too much of a good thing can be a challenge, too. That’s why the E-MAAX provides two ways to match charging output to the limitations of engine, belts and batteries.

Within the programming mode of the E-MAAX, the Field Limiter function allows the user to de-rate the regulator in precise, 5 percent increments to lessen belt wear and load on the engine.

If you’re looking to upgrade your battery banks or add serpentine pulleys later on, this feature allows you to add a higher output alternator now without overwhelming your current electrical system.

In addition to the Field Limiter, the E-MAAX features an easily accessed “Half Output” mode that can be turned on or off at the panel. Turning the “Half Output” mode on, you can limit field excitation by half with the push of a button, reducing horsepower load at the alternator and sending more power to the prop.

We’ve got Sensors

One of the most important parts of a smart control system is the ability to see what’s going on throughout the system. The innovative E-MAAX system utilizes of series of sensors that can be chained around the electrical system to determine alternator temperature, battery temperature, even engine compartment temperatures, so you can monitor system health with just a visit to the remote panel.

With sensors in place, the E-MAAX can increase or decrease charging output to match the conditions of the system or batteries – or shut things down completely in the event of a thermal event. Additional sensors are also being developed for other uses; such as activating auto-start relays, integrating solar and wind chargers and a wide range of other complementary functions.

Because they can be programmed for multiple tasks, bugs can also be used to monitor cabin temperature, refrigeration temperature, even water temperature – with easy access to “real time” updates at the remote panel.

E-MAAX models for every application

Some folks may only need the basics of smart regulation, while others may want all of the features that a premium battery monitor and DC charge control suite can offer. That’s why Electromaax offers the E-MAAX in a variety of packages.

Simple, yet powerful

The E-MAAX Basic is the perfect “set it & forget it” charge controller, featuring a pre-set multistage charging profile that’s safe for most flooded and sealed lead acid battery technologies.

Compatible with E-MAAX temperature sensor “bugs”, the Basic regulator provides safe and reliable charge control, including temperature compensation when equipped with optional temperature sensors.

The E-MAAX Basic is fully compatible with the Remote Panel, and can be upgraded to support additional programming functions. Maximum field output is 10 amps.

Full-featured charging for the cruiser

The E-MAAX Cruiser system combines the E-MAAX remote with a 10A-maximum field output CPU/control module that’s well suited to Electromaax’s Cruiser Series alternators and other alternators featuring traditional “S” wound stators.

Programming selections include N or P-type excitation for positive or negative field alternators,12 or 24-volt regulation, belt-saving Alternator Output Control, and preset programs for most popular marine battery technologies.

Advanced programming functions include adjustable start delay and soft ramp times, voltage adjustment in Absorption, Acceptance and Float stages, field threshold control and and an adjustable timer for all charging stages.

The addition of optional alternator and battery temperature sensor bugs enables the E-MAAX Cruiser to automatically compensate for changes in battery temperature by increasing or decreasing charging voltage, as well as an immediate response to battery over-temperature conditions.

With an alternator temperature sensor installed, the E-MAAX Cruiser can ensure safe alternator operating temperatures by automatically altering field output to reduce alternator heat, as well as providing advisory information as the remote panel if an over-temperature condition occurs.

Maximum performance for new-technology alternators and batteries

Designed to provide the maximum in user control and intelligent regulation, the E-MAAX Voyager Charge Controller delivers field current that’s required to support newer technology alternators like Electromaax’s high-output Voyager hairpin and brushless hairpin alternators.

Precise user programmability enables the installer to program the E-MAAX Voyager to the specific charging requirements of a large variety of LiO battery types.

The addition of the EMAAX pulse sensor lets the regulator turn off the alternator without losing the tachometer at the panel — the perfect solution to the problem of tach loss with Lithium Ion batteries.

e-maax-multi-terminal-cpu-webBelow is a list of common questions about the E-Maax pro smart exterior regulator which will protect your batteries while enhancing the performance and life expectancy of your alternator.

Simply read through the questions and answers below and if you don’t find the answer that you’re looking for, feel free to give us a call or get in touch with us through out contact page.

Below is a list of common questions about the E-Maax Pro Smart Exterior Regulator. If your questions is not answered below feel free to contact us directly with your questions and we’ll respond in a timely manner.

You can call us directly, and we’ll also post your questions on this page for other cruisers too.

  1. How is the E-MAAX different than other external voltage regulators?
  2. What types of batteries are supported by the E-MAAX regulator?
  3. Does the regulator have to be mounted close to the engine?
  4. Can I use the E-MAAX with my existing alternator?
  5. Can I hook up my E-MAAX regulator to my PC?
  6. Can the E-MAAX be upgraded as new features are introduced?
  7. Can the E-MAAX measure current as well as voltage?
  8. The E-MAAX can monitor engine temperature as well as alternator and battery temperature?
  9. How do all of the E-MAAX’s “bugs” communicate?
  10. Can the E-MAAX regulator be used to control two alternators at once?
  11. Do I need a separate component, like the Center-fielder, to control E-MAAX regulators in a twin engine system?
  12. Can I use more than one remote panel on my boat?
  13. Can I control the E-MAAX from my iPhone?
  14. How do I connect the E-MAAX components together?
  15. What is the E-MAAX warranty period?


How is the E-MAAX different than other external voltage regulators?


It might be faster and easier to answer how they’re the same…

The new E-MAAX voltage regulator is the result of a “ground up” development process that represents a complete “new generation” answer to smart voltage regulation. Unlike other multi-stage marine voltage regulators which rely on hardware and software that dates back to the late 1990’s, the E-MAAX relies on up-to-date components and completely new software to address many of the issues that have plagued older regulator technologies.

In previous products, the boater has had to choose between regulators that were unable to integrate with other system functions, or spend excessive amounts of money to purchase bus-based systems that allowed the regulator to communicate with other charging system components. The E-MAAX solves the communication problem with its own intelligent remote panel display.

Any boater who has had to lay upside-down in the engine compartment while trying to program their regulator with a tiny screwdriver will appreciate the E-MAAX regulator’s convenient remote panel display. Installed in the comfort of the cabin, the remote panel provides convenient push-button access to all of the regulator’s programming functions without requiring the user to snake their way into the bowels of the vessel.

In addition, the remote panel provides a quick and very-intuitive source of information about charging progress. A graphic “charge status” display offers, with a quick look, immediate info regarding the condition of your batteries. A backlit 32-digit display offers data, in real language, so you won’t have to grab your manual to translate.

The E-MAAX is equipped with faster, higher capacity processing capability, so it can deliver unsurpassed responsiveness to changes in battery condition. With the addition of greater computing power, the E-MAAX offers the ability to utilize more data input from more sources than any other regulator on the market.

To do this, the E-MAAX introduces a collection of remote sensing and activation modules which can do anything from, monitoring engine temperature to sending the regulator a warning if there is a short or blown fuse in the system. With a customizable temperature bug, you can even display the temperature of your cold plate, or even the ocean temperature on your system’s remote display.

Because of its unique ability to communicate with a multitude of E-MAAX components, the system can address difficult applications with much more intelligence than other products on the market. In the case of dual engine systems, like those found on multihull sailboats, the E-MAAX can enable port and starboard regulators to recognize each other and work together to share loads and support a large single house battery bank — where other regulators would fight each other and perform inefficiently.

By communicating back and forth, the two regulators are able to share loads between alternators, and quickly respond to changing battery conditions.

E-MAAX voltage regulators are available in configurations to support 12-volt or 24-volt systems, as well as P-type or N-type alternator field circuits.


What types of batteries are supported by the E-MAAX regulator?


The E-MAAX offers selectable preset programs for most battery types, including: standard flooded, deep-cycle flooded, gel, AGM, Spiral Wound and TPPL battery types, and technology lithium ion batteries. In addition, the E-MAAX offers the ability to modify a wealth of time and voltage values to customize charging for special circumstances.

The E-MAAX system includes the ability to sense battery temperature. As battery temperatures change, the E-MAAX can modify charging voltages to ensure safe and optimal charging.


Does the regulator have to be mounted close to the engine?


No. Unlike other multi-stage regulators which are limited to a short wiring harness, the E-MAAX can be located in a position that’s better protected and more convenient for the user. The CPU module (the heart of the regulator) can be mounted up to 10 feet from the alternator, and the remote panel can be mounted up to 15 feet from the CPU. In essence, you can control charging from up to 25 feet from the engine.


Can I use the E-MAAX with my existing alternator?


If your 12 or 24-volt alternator is already being regulated by an external voltage regulator, there’s an E-MAAX regulator that’s going to be compatible. If your alternator has a built-in voltage regulator, the may be some modification required for the alternator (basically, disabling the internal regulator and a diode trio, if equipped).


Can the E-MAAX be upgraded as new features are introduced?


Yes. The E-MAAX software and hardware architecture was designed to be upgradeable as software and new modules are made available. Unlike other regulators that are potted in epoxy resin, E-MAAX boards are coated in a thin, protective barrier which can still be accessed with updated code.


Can the E-MAAX measure current as well as voltage?


First generation E-MAAX regulators are engineered to use voltage exclusively as a measure for regulation, but modules are in development to enable the E-MAAX to use alternator output current and battery load current as factors for regulation. In addition, the ability for the system to measure charging and load currents will enable the E-MAAX remote panel to act as a convenient tool for battery monitoring as well as regulation.


The E-MAAX can monitor engine temperature as well as alternator and battery temperature?


Yes. By measuring the temperature of the engine block, the E-MAAX can determine when the engine is sufficiently warmed up to handle the additional horsepower load of a high-output alternator. This is automatically calculated in the regulator’s start delay/soft ramp mode when the engine temperature sensor is detected. If the sensor is not installed, the regulator uses a timer to initiate charging.


How do all of the E-MAAX’s “Sensors” communicate?


The E-MAAX engineering team has developed a unique one-wire data transmit protocol that allows the CPU to communicate with the remote panel and all of the bugs installed in the system.

Each component of the system has a specific address which identifies its purpose and behaviors – ranging from temperature sensing to circuit monitoring to stator output compensation. During start-up, the CPU polls all of the available bugs and begins communication throughout the system. Pertinent data from the bugs is relayed to the remote panel for display.


Can the E-MAAX regulator be used to control two alternators at once?


That depends on how the alternators are set up and the type of alternators being used. If two alternators are installed on the same engine, and are supplying power to the same battery bank, the field output from the E-MAAX is usually sufficient to drive two alternators.

On the other hand, the E-MAAX has been engineered to provide optimal charging when two regulators can work together to support two alternators that are charging the same battery bank. Not only does this provide redundancy in the system, it also ensures that both alternators are working at a comparable rate.

In applications where two alternators are installed on two separate engines (like a multihull or a twin engine sport fisher) two regulators are always recommended, as there may be times when only one engine is running. Two regulators should always be used if each alternator is charging a separate, isolated battery bank.


Do I need a separate component, like the Center-fielder, to control E-MAAX regulators in a twin engine system?


The “Center-fielder” is (for lack of a better explanation) a “smart” switch that monitors field and ignition voltage at port and starboard regulators. When it sees voltage at both regulators, it creates a pathway for one of the two regulators to provide field current to both alternators. That works, but if the regulators are any distance apart, the chances of inefficiency grows with the length of wire required to deliver current from the dominant regulator to the furthest alternator.

In addition, the dominant regulator is required to support both alternators’ field current needs, requiring it to deal with more heat and component wear. By allowing the port and starboard E-MAAX CPU’s to communicate and load share, much less stress is placed on any part of the system.


Can I use more than one remote panel on my boat?


Absolutely. The remote panel is like any other bug, in the fact that it is issued an address at start up. It would be perfectly acceptable to install a remote panel near the vessel’s distribution panel, and another at the flybridge.


Can I control the E-MAAX from my iPhone?


Not yet. At this point, the remote panel is the primary tool for programming and monitoring regulator activity. On the other hand, because of the ability to easily upgrade software and hardware, the first generation E-MAAX will be adaptable as new options become available.


How do I connect the E-MAAX components together?


The E-MAAX system uses a high-quality twist-lock connector system to ensure that connections are kept clean and secure. Connectors are male and female, so there’s little chance of hooking up the system incorrectly and the pin locations are always correct because the male and female connectors will only mesh if the pins are in the right position.

Unlike the spade terminals used on many regulators, E-MAAX twist-lock connectors are not prone to breakage and corrosion.


What is the E-MAAX warranty period?


Electromaax offers a one-year warranty period on the E-MAAX regulator system which is consistent with the period offered by most respected European marine electrical manufacturers.

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