Collection: Solar Controllers

Explore Custom Marine Products' range of high-efficiency solar controllers, perfect for marine solar systems. Our selection includes MPPT and PWM controllers from top brands like Victron and EP Solar. These controllers maximize power output, support dual battery banks, and offer advanced features like Bluetooth and remote monitoring. Whether you're looking to optimize your sailboat or powerboat's solar setup, our controllers ensure efficient and safe battery charging. Check out our complete solar system kits for a seamless installation.

​PV Solar Controllers

A solar controller is an essential component of a marine solar system.  A controller gathers the maximum amount of power from the solar panels and delivers the proper amount of power to the battery bank for efficient charging and ensures the batteries are not overcharged.  Pulse Width Modulated (PWM) controllers are excellent for smaller solar systems under 300 watts. They are cost effective and use little power.  Our PWM controller is designed for charging two battery banks; ideal for cruising sail and power boats. Maximum Power Point Tracking (MPPT) controllers are designed to pull the maximum power off a solar array and adjust the charging voltage and current to achieve maximum battery charging efficiency.  MPPT controllers are ideal for solar systems above 200 watts in rated output.

Our solar controllers are well suited to our line of solar panels. We have assembled kits that include everything you need to install a solar system on your boat. 

PWM Dual Output Solar Controller

The EP Duo PWM marine controller is designed specifically for charging two independent battery banks. It is easily programmed for amount of charge to each bank.  An external display provides information on solar panel output, battery state of charge and much more.

Dual Battery Bank Controllers

Wiring Diagram for Tracer BN or Xtra-N Controllers

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CMPower Solar Controller Specs

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Tracer BN MPPT Controller

The DuoRacer, Tracer BN and Xtra marine series controllers are EP Solar’s second generation of MPPT controllers. Both have rapid MPP (Maximum Power Point) calculation capability to achieve the maximum output of a solar array.  At 99.5% efficiency they are one of the most energy efficient controllers available which means they will convert the maximum amount of solar energy to battery charging power.

These controllers also have extensive communication capability.  You can monitor your solar panel performance through your laptop computer or through the MT50 or MT11 remote display.  An option to monitor solar system performance through Bluetooth or WiFi is also available.

DuoRacer- The DuoRacer marine series solar controllers are the first MPPT controllers designed with dual output.The DuoRacer controller can charge two battery banks simultaneously.  The bulk of solar power is used to charge the primary or main house battery bank (batt1) while a lesser amount of solar power is used to trickle charge the secondary battery bank (batt2) which is typically the start battery.  The battery banks do not have to be of the same battery type so the primary bank can be LiFePO4 batteries and the secondary bank can be AGM or lead acid.  DuoRacer controllers support Sealed, Gel, Flooded, AGM, LiFePO4 and Li-NiCoMn battery types. 

DUORACER MPPT DUAL OUTPUT CONTROLLERS

MT50 Remote Display

Tracer BN - The die-cast aluminum design ensures excellent heat dispersion; no heat dissipating fans are required. The Tracer BN package includes the MT50 remote display.  The Tracer BN can be programmed from the MT50 remote display or from a computer connected via an optional cable.  This controller is ideal for mounting in a warm environment.

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EP Xtra-N and DuoRacer MPPT Controller with Display Built in

Xtra-N - The Xtra series controllers include a built in display providing the same information as the MT50 remote display although the MT50 is an optional accessory.  The Xtra is designed to manage Lithium ion and LiFePo4 batteries as well as the standard flooded, AGM and sealed batteries.  The Xtra can be programmed from the built in display, the MT50 remote meter, a Bluetooth smart phone app or a computer connected via special cable.  This controller is ideal for mounting in a space where the meter is readily visible.

Shop Xtra-N

Victron SmartSolar - The Victron SmartSolar series controllers are available in a variety of capacities and integrate with the Victron family of marine electrical equipment. 

Victron SmartSolar Solar Controller

Victron MPPT Control Remote Meter

Compared to conventional PWM controllers and depending upon the performance characteristics of the solar array, MPPT technology may increase the solar system charge efficiency up to 30% and potentially decrease the required power of the solar array.

FAQ's

Should I use an MPPT or PWM controller?

A solar controller is an essential component of a marine solar system. A controller gathers the maximum amount of power from the solar panels and delivers the proper amount of power to the battery bank for efficient charging and ensures the batteries are not overcharged. Pulse Width Modulated (PWM) controllers are excellent for smaller solar systems under 200 watts. They are cost effective and use little power. Our PWM controller is designed for charging two battery banks; ideal for cruising sail and power boats. Maximum Power Point Tracking (MPPT) controllers are designed to pull the maximum power off a solar system and adjust the charging voltage and current to achieve maximum battery charging efficiency. MPPT controllers are ideal for solar systems above 200 watts in rated output.

Premium Marine Solar Panels/Systems and Lithium Iron Batteries

Improve your cruising experience with the highest efficiency solar panels available. 

  • Shipping

    Products ship day after payment domestically. Free shipping on orders over $1000 applies to Lower 48 US states only. International takes longer. We do not add tariff charges. Call for pricing.

  • Custom Designs

    Our engineers will work with you to design a solar system specific to your needs including Lithium Batteries if you like. (Batteries are 10% off w/ solar system purchase).

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  • Doug Heath - Santa Fe, NM

    Customer Service and Product

    Very pleased with the performance of the rigid solar panels purchased in 2022. Customer service also has been consistently excellent both before the sale regarding product selection and after the sale regarding installation and maintenance concerns.

  • William Roth - Kodiak, AK

    Heavy Duty Panels For The Win

    Installed 1200watts of panels on my 56' commercial fishing boat in Kodiak Alaska, with salt spray and harsh winters I hardly run my genset. Installation was a breeze with using silicone to mount them. Most the boats in my family fleet have them now and we are all saving big on the fuel bill! Couldn't be happier with the purchace.

  • Hartwell C - Bellingham, WA

    Easy Install - Great Performance

    I worked with Tom last year to design a system for my sailboat; the dialog and information was very detailed and helpful in helping determine my system needs and completing the installation. Once ordering, the kit arrived in a timely manner and very complete. The install was very straightforward and Tom provided additional information as needed. After the install I took off on a 7 month cruise of British Columbia. The system worked perfectly during my trip. I’m very happy with the equipment and support from CMP and Tom. I highly recommend !

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