Charge Controllers / Wire
Single Battery Bank Marine High Efficiency MPPT Controller
The Tracer BN series is EP Solar’s second generation of MPPT controller. It has rapid MPP (Maximum Power Point) calculation capability to achieve the maximum output of a solar array. At 99.5% efficiency it is one of the most energy efficient controllers available which means it will convert the maximum amount of solar energy to battery charging power.
It also has extensive communication ability. You can monitor your solar panel performance through your laptop computer or through the MT50 remote display. The die-cast aluminum design ensures excellent heat dispersion. Compared to conventional PWM controllers, MPPT technology may increase the charge efficiency up to 30% and potentially decrease the power of the solar array needed. 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 special cable. |
Four Models
Tracer1215BN 10A Tracer2215BN 20A Tracer3215BN 30A Tracer4215BN 40A (special order)
Features
◆ Advanced MPPT technology, with efficiency no less than 99.5%
◆ Maximum conversion efficiency of 98%
◆ Ultra-fast tracking speed and guaranteed tracking efficiency
◆ Accurately recognize and track multiple power points
◆ Reliable automatic limit function of maximum PV input power, ensuring no overload
◆ Die-cast aluminum design, ensuring excellent heat dissipation characteristic
◆ Automatically detect 12 and 24 volt systems
◆ Support 4 charging options: Sealed, Gel, Flooded and User.
◆ Battery temperature compensation function.
◆ Real-time energy statistics function.
◆ Real-time data monitoring and parameter setting using PC and/or external display with RS-485 communication bus
◆ Support software upgrade.
Electronic protection
◆ PV short circuit protection ◆ PV over current protection
◆ PV reverse polarity protection ◆ Battery over voltage protection
◆ Battery over discharge protection ◆ Battery reverse polarity protection
◆ Load overload protection ◆ Load short circuit protection
◆ Battery overheating protection ◆ Controller overheating protection
Tracer1215BN 10A Tracer2215BN 20A Tracer3215BN 30A Tracer4215BN 40A (special order)
Features
◆ Advanced MPPT technology, with efficiency no less than 99.5%
◆ Maximum conversion efficiency of 98%
◆ Ultra-fast tracking speed and guaranteed tracking efficiency
◆ Accurately recognize and track multiple power points
◆ Reliable automatic limit function of maximum PV input power, ensuring no overload
◆ Die-cast aluminum design, ensuring excellent heat dissipation characteristic
◆ Automatically detect 12 and 24 volt systems
◆ Support 4 charging options: Sealed, Gel, Flooded and User.
◆ Battery temperature compensation function.
◆ Real-time energy statistics function.
◆ Real-time data monitoring and parameter setting using PC and/or external display with RS-485 communication bus
◆ Support software upgrade.
Electronic protection
◆ PV short circuit protection ◆ PV over current protection
◆ PV reverse polarity protection ◆ Battery over voltage protection
◆ Battery over discharge protection ◆ Battery reverse polarity protection
◆ Load overload protection ◆ Load short circuit protection
◆ Battery overheating protection ◆ Controller overheating protection
Technical Specifications
Remote Display MT50

The MT50 Remote Display is used to monitor the performance of the solar panels including volts, amps, watts and cumulative watts. It also displays the state of charge of the battery bank and the controller status. It is used to easily program the operating parameters of the Tracer BN controller.
The display includes a 10 foot (3 meter) cable with RJ45 connectors that simply plug into the controller and the display.
This display is included with all of our Tracer BN Controllers.
The display includes a 10 foot (3 meter) cable with RJ45 connectors that simply plug into the controller and the display.
This display is included with all of our Tracer BN Controllers.
Features
• Display all the operating data and system working status
• Simple and convenient operation
• Real-time alarm and failure information
• Longer communication distance based on RS485
• Diversified load control modes : Manual Control, Light ON/OFF, Light ON+ Timer, Time Control
• Specify battery type: Gel, sealed, flooded and User(programable)
• Set Tracer BN programmable parameters
• Accumulate and display energy statistics
• Display all the operating data and system working status
• Simple and convenient operation
• Real-time alarm and failure information
• Longer communication distance based on RS485
• Diversified load control modes : Manual Control, Light ON/OFF, Light ON+ Timer, Time Control
• Specify battery type: Gel, sealed, flooded and User(programable)
• Set Tracer BN programmable parameters
• Accumulate and display energy statistics
Optional Remote Temperature Sensor

The optional remote temperature sensor constantly measures and displays storage battery temperature so the controller can adjust charge rate appropriately. This is especially important when using temperature sensitive gel batteries. This option could increase battery life by 100-200 charge/discharge cycles.
The sensor plugs into the Tracer BN Controller and is attached to the top of a battery in the battery bank with tape or adhesive.
The sensor plugs into the Tracer BN Controller and is attached to the top of a battery in the battery bank with tape or adhesive.
Product Ordering and Pricing
Tracer 1215BN 12/14V 10A MPPT Controller and MT50 Remote DisplayThe Tracer BN series has rapid MPP (Maximum Power Point) calculation capability to achieve the maximum output of a solar array. It also has extensive communication ability. The die-cast aluminum design ensures excellent heat dispersion.
The Tracer BN package includes the MT50 external display. The Tracer BN can be programmed from the MT50 external display or from a PC computer connected via cable. |
Tracer 2215BN 12/24V 20A MPPT Solar Controller and MT50 Remote DisplayThe Tracer BN series has rapid MPP (Maximum Power Point) calculation capability to achieve the maximum output of a solar array. It also has extensive communication ability. The die-cast aluminum design ensures excellent heat dispersion.
The Tracer BN package includes the MT50 external display. The Tracer BN can be programmed from the MT50 external display or from a PC computer connected via cable. |
Tracer 3215BN 12/24V 30A MPPT Solar Controller and MT50 Remote DisplayThe Tracer BN series has rapid MPP (Maximum Power Point) calculation capability to achieve the maximum output of a solar array. It also has extensive communication ability. The die-cast aluminum design ensures excellent heat dispersion.
The Tracer BN package includes the MT50 external display. The Tracer BN can be programmed from the MT50 external display or from a PC computer connected via cable. |
Remote Temperature Sensor for Tracer BN Controllers
This temperature sensor includes a 6 foot (2 meter) cable. It plugs into the Tracer BN controller and is attached to a battery in the battery bank.
MPPT Controller by MidNite Solar

The Marine version of The Kid comes with the mounting bracket, 4 ft of flex conduit, battery temperature sensor, and an extra conformal coating. The marine version of the MidNite Solar Kid charge controller is available in both black and white versions. Please choose your color from the drop down menu above when ordering. The Kid is MidNite Solar's newest charge controller. It uses MPPT technology to minimize power loss from your solar panels. The unit is capable of charging battery banks at 12VDC, 24VDC, 36VDC and 48VDC. The Kid is designed to work with solar panels and will also work with wind and hydro systems once the firmware update is released in second quarter of 2014. It also has the ability to give amperage readings with the optional Whiz Bang Jr and a 50mv/500A shunt. Specifications: Voltage range for batteries: 12 to 48 volts DC Voltage range for solar/wind/hydro: Up to 150 volts DC input Up to 30 amps output Can be connected in parallel for a total of two Kid controllers. Built in lighting controller: dusk-dawn, hourly, day and night settings Reverse polarity protection Sealed for harsh environments No cooling fan Dimensions: 9.5"L x 6.6"W x 3.4"D Weight: 7 lbs.
The Kid, a 30A Charge Controller, is made for small to medium sized renewable energy systems. It's ideal for cabins, boats, RVs and other similar applications. It utilizes Maximum Power Point Tracking (MPPT) technology to optimize output from your solar array.
THE KID IS CERTIFIED TO UL1741 & UL458 (MARINE SUPPLEMENT)
With the UL458 marine supplement, THE KID meets very strict vibration, environment, and thermal requirements.
MORE POWER - As your power needs increase, add an additional Kid and more solar panels to your array for twice the power from a single run of PV wires.
AUTO GENSTART (AGS) - The Kid is available with a 2-wire Smart AGS. The Kid Smart AGS will start a generator and then monitor the batteries to ensure proper charging. If the AGS fails to charge, the generator will be turned off saving fuel. AGS is user adjustable.
NOTE: Currently MidNite is shipping the KID without the AGS feature. To receive the AGS feature with your KID, request an AGS model when ordering. There is no extra cost for AGS.
BATTERIES - The Kid can charge 12, 24, 36 or 48 volt battery banks. It supports charging traditional flooded, AGM or Gel batteries and newer technologies such as Lithium and Calcium SMF.
LOAD CIRCUIT - A unique feature of the Kid is the load circuit. This versatile feature can be used for many purposes including running well pumps, electric fences, or billboard lights in remote areas.
LOAD DUMPING - The Kid has a mode that allows excess energy coming in from the PV array to be diverted to run hot water heaters or other electrical loads. This feature ensures you get the most out of your Kid during times of peak energy production.
CUSTOMIZABLE LIGHTING CONTROLLER - The Kid sports a highly customizable lighting controller. It can be set to turn on automatically at dusk, off at a specified time, and then back on at another preset time and off automatically at dawn. This is called Dusk Plus and Dawn Minus. Using Dusk Plus and Dawn Minus has the distinct advantage of saving battery power. This setting is great for accent lighting in residential areas or for running grow lights in greenhouses.
LCD & LED MONITORING - All parameters of your Renewable Energy System can be monitored right from the LCD display. LEDs indicate if your batteries have been fully charged in the last 2 weeks, numerical read outs show PV input and battery voltage, as well as state of charge.
CURRENT SENSING MODULE - Add the Whizbang Jr, our current sense module to the mix and you have a complete State of Charge Meter.
BATTERY TEMP SENSOR - The battery temperature sensor will help charge your batteries by adjusting the charge voltage depending on the battery temperature. The Kid marine version comes standard with a battery temp sensor.
MARINE MOUNTING BRACKET - The Marine Kid comes standard with the marine mounting bracket and makes for a beautiful Kid co-pilot.
COMPACT DESIGN - We understand space can be a struggle in a boat or RV. With that in mind we kept the physical design of the Kid compact without sacrificing performance.
SEALED FOR HARSH ENVIRONMENTS - All Kids are sealed for harsh environments! IP64 Rating - Type 1
The Kid Charge Controller is the most versatile Charge Controller of its class on the market today. The only one made right here in the USA. See your local dealer or check out our "Where To Buy Section" to order your very own Kid today!
KID Flow Diagrams
Need some basic application ideas for your KID, take a look at these flow diagrams. NOTE: NOT INTENDED TO BE USED AS WIRING DIAGRAMS.
For actual wiring diagrams check out the Kid Documents.
Flow Diagram with WBJ & AGS
Flow Diagram with DC Loads
Flow Diagram with Inverter
Flow Diagram with GFP
NOTE: These flow diagrams are not intended as wiring diagrams and are used only to display basic application concepts!
The Kid, a 30A Charge Controller, is made for small to medium sized renewable energy systems. It's ideal for cabins, boats, RVs and other similar applications. It utilizes Maximum Power Point Tracking (MPPT) technology to optimize output from your solar array.
THE KID IS CERTIFIED TO UL1741 & UL458 (MARINE SUPPLEMENT)
With the UL458 marine supplement, THE KID meets very strict vibration, environment, and thermal requirements.
MORE POWER - As your power needs increase, add an additional Kid and more solar panels to your array for twice the power from a single run of PV wires.
AUTO GENSTART (AGS) - The Kid is available with a 2-wire Smart AGS. The Kid Smart AGS will start a generator and then monitor the batteries to ensure proper charging. If the AGS fails to charge, the generator will be turned off saving fuel. AGS is user adjustable.
NOTE: Currently MidNite is shipping the KID without the AGS feature. To receive the AGS feature with your KID, request an AGS model when ordering. There is no extra cost for AGS.
BATTERIES - The Kid can charge 12, 24, 36 or 48 volt battery banks. It supports charging traditional flooded, AGM or Gel batteries and newer technologies such as Lithium and Calcium SMF.
LOAD CIRCUIT - A unique feature of the Kid is the load circuit. This versatile feature can be used for many purposes including running well pumps, electric fences, or billboard lights in remote areas.
LOAD DUMPING - The Kid has a mode that allows excess energy coming in from the PV array to be diverted to run hot water heaters or other electrical loads. This feature ensures you get the most out of your Kid during times of peak energy production.
CUSTOMIZABLE LIGHTING CONTROLLER - The Kid sports a highly customizable lighting controller. It can be set to turn on automatically at dusk, off at a specified time, and then back on at another preset time and off automatically at dawn. This is called Dusk Plus and Dawn Minus. Using Dusk Plus and Dawn Minus has the distinct advantage of saving battery power. This setting is great for accent lighting in residential areas or for running grow lights in greenhouses.
LCD & LED MONITORING - All parameters of your Renewable Energy System can be monitored right from the LCD display. LEDs indicate if your batteries have been fully charged in the last 2 weeks, numerical read outs show PV input and battery voltage, as well as state of charge.
CURRENT SENSING MODULE - Add the Whizbang Jr, our current sense module to the mix and you have a complete State of Charge Meter.
BATTERY TEMP SENSOR - The battery temperature sensor will help charge your batteries by adjusting the charge voltage depending on the battery temperature. The Kid marine version comes standard with a battery temp sensor.
MARINE MOUNTING BRACKET - The Marine Kid comes standard with the marine mounting bracket and makes for a beautiful Kid co-pilot.
COMPACT DESIGN - We understand space can be a struggle in a boat or RV. With that in mind we kept the physical design of the Kid compact without sacrificing performance.
SEALED FOR HARSH ENVIRONMENTS - All Kids are sealed for harsh environments! IP64 Rating - Type 1
The Kid Charge Controller is the most versatile Charge Controller of its class on the market today. The only one made right here in the USA. See your local dealer or check out our "Where To Buy Section" to order your very own Kid today!
KID Flow Diagrams
Need some basic application ideas for your KID, take a look at these flow diagrams. NOTE: NOT INTENDED TO BE USED AS WIRING DIAGRAMS.
For actual wiring diagrams check out the Kid Documents.
Flow Diagram with WBJ & AGS
Flow Diagram with DC Loads
Flow Diagram with Inverter
Flow Diagram with GFP
NOTE: These flow diagrams are not intended as wiring diagrams and are used only to display basic application concepts!
The Marine KID is the most versatile medium sized charge controller on the market. Ideal for small renewable energy systems. Available in black or white. The Marine version comes standard with the mounting bracket, 4ft of Flexible conduit and Battery temp sensor.
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The Marine KID is the most versatile medium sized charge controller on the market. Ideal for small renewable energy systems. Available in black or white. The Marine version comes standard with the mounting bracket, 4ft of Flexible conduit and Battery temp sensor.
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Dual Battery Bank Controller

Our controller is designed specifically for charging two independent battery banks.
Charge controller for dual battery systems
Model EP Duo 12/24V 10A
Model EP Duo 12/24V 20A
Both models offer the following advanced features
Charging of two independent battery banks:
The owner can set charging priority between the two battery banks in steps of 10%. For instance, you can decide that 80% of the solar current should go to the house battery and 20% to the start battery. When one battery bank is full all the power is redirected to the other battery.
Battery optimized charging algorithms:
• Advanced PWM four stage algorithm with bulk, absorption, float and boost (equalization) charging.
• Charging voltages are optimized for the selected lead-acid battery type (liquid, sealed or gel).
• Selectable PWM charging frequency (25, 50 or 100Hz)
• Temperature compensated charging using either a built-in temperature sensor or an optional remote sensor.
Remote display with charging data (option):
• Remote backlit LCD display can be mounted recessed or in a provided frame up to 10 m (33 ft) from the charge controller.
• Display shows charging voltage, actual current, max current and total amp-hours provided by the solar panels.
• Display shows current, minimum and maximum voltage of each battery bank as well as charge provided in amp-hours.
• Other information includes temperature, time, charge priority and frequency settings and troubleshooting information.
Dimensions:
• Charge controller: 6" x 3 1/16" x 1 3/8" (155 x 77 x 35 mm). Weight 8.8 oz. (250 g) for 10A model, 10.6 oz. (300 g) for 20A model.
• Remote display: Cutout hole if flush mounted: 3"(75 mm), face plate 3 3/4" x 3 3/4" x 5/16" .
Frame mounted dimensions 4 1/2" x 41/2" x 1 9/16" (112 x 112 x 40 mm). Weight 5.3 oz. (150 g)
Specifications - Controller:
Charge controller for dual battery systems
Model EP Duo 12/24V 10A
Model EP Duo 12/24V 20A
Both models offer the following advanced features
Charging of two independent battery banks:
The owner can set charging priority between the two battery banks in steps of 10%. For instance, you can decide that 80% of the solar current should go to the house battery and 20% to the start battery. When one battery bank is full all the power is redirected to the other battery.
Battery optimized charging algorithms:
• Advanced PWM four stage algorithm with bulk, absorption, float and boost (equalization) charging.
• Charging voltages are optimized for the selected lead-acid battery type (liquid, sealed or gel).
• Selectable PWM charging frequency (25, 50 or 100Hz)
• Temperature compensated charging using either a built-in temperature sensor or an optional remote sensor.
Remote display with charging data (option):
• Remote backlit LCD display can be mounted recessed or in a provided frame up to 10 m (33 ft) from the charge controller.
• Display shows charging voltage, actual current, max current and total amp-hours provided by the solar panels.
• Display shows current, minimum and maximum voltage of each battery bank as well as charge provided in amp-hours.
• Other information includes temperature, time, charge priority and frequency settings and troubleshooting information.
Dimensions:
• Charge controller: 6" x 3 1/16" x 1 3/8" (155 x 77 x 35 mm). Weight 8.8 oz. (250 g) for 10A model, 10.6 oz. (300 g) for 20A model.
• Remote display: Cutout hole if flush mounted: 3"(75 mm), face plate 3 3/4" x 3 3/4" x 5/16" .
Frame mounted dimensions 4 1/2" x 41/2" x 1 9/16" (112 x 112 x 40 mm). Weight 5.3 oz. (150 g)
Specifications - Controller:
- For 12V and 24V systems (nominal voltage), automatically sensed. Charging voltages given below should be multiplied by 2 for 24V operation.
- Max solar current 10 A for smaller panels or 20 A for larger panels (greater than 200 watts)
- Absorption voltage 14.2V (sealed battery), 14.4V (flooded battery), 14.6V (industrial battery) or
- Boost voltage 30 min 14.4V (sealed battery), 14.6V (flooded battery), 14.8V (industrial battery)
- Float voltage 13.7V (all battery types)
- Max intrinsic power use 4 mA at night, 10 mA when charging
- Protected against short circuits, over-currents, reverse currents and lightning
- Temperature range for use : from -35°C to +55°C
- Temperature compensation -30 mV/°C
- 4 mm2 (10-12 AWG) max wire size terminals to solar panel and batteries
- 1.5 mm2 (16 AWG) terminals for optional remote temperature sensor
- RJ45 connector for cable to optional remote display
- IP22 ingression protection
- Circuit protected against high humidity
- Minimum operating voltage: 8 Volts
Remote Display
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This optional remote display provides all the information you need to track the performance of your solar panel. It is particularly useful when optimizing panel tilt using our top-of-pole mounting system.
The display plugs into the Dual Bank Battery Controller. Features include:
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Remote Temperature Sensor

The optional
remote temperature sensor constantly measures and displays
storage battery temperature so the controller can adjust charge rate
appropriately. This is especially important when using temperature
sensitive gel batteries. This option will increase battery life by
100-200 charge/discharge cycles.
The sensor plugs into the Dual Bank Battery Controller and is attached to the top of a battery in the battery bank.
The sensor plugs into the Dual Bank Battery Controller and is attached to the top of a battery in the battery bank.
Product Ordering and Pricing
10 Amp. Dual Output ControllerCharge two independent battery banks at the same time.
This is an excellent controller for all of our CMP marine solar panels. |
20 Amp. Dual Output ControllerCharge two independent battery banks at the same time.
This is an excellent controller for all of our CMP marine solar panels. |
Remote DisplayGet all the information you need to monitor the performance of your solar panel.
This is a very popular item with our customers. |
Temperature SensorMonitors storage battery temperature. Plugs into Dual Battery Controller
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10 Amp. Dual Battery Controller, Remote Display and Temperature SensorPurchase the complete solar panel control system and save.
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20 Amp. Dual Battery Controller, Remote Display and Temperature SensorPurchase the complete solar panel control system and save.
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#10 Awg Marine Grade PV WireConductor: Stranded Tined Copper (84 Strands) Insulation: Halogen free cross linked polyolefin Sheath: Halogen free cross linked polyolefin Price per Foot $1.25 |
MC4 Line ConnectorsOne male and one female connector pre-installed on the wire ordered.
Price per pair |
MC4 T-branch Connectors
Used when connecting two solar panels to a controller
Rated voltage: DC 1000V
Waterproof grade: IP 65 Temperature range:-40℃~+85℃
Cable standard: 2.5/4/6mm² Flame retardant grade: UL94-V0
Composite contact material: Copper, Tin Plated
Price per pair
Rated voltage: DC 1000V
Waterproof grade: IP 65 Temperature range:-40℃~+85℃
Cable standard: 2.5/4/6mm² Flame retardant grade: UL94-V0
Composite contact material: Copper, Tin Plated
Price per pair