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  • Morningstar SunKeeper 6 Charge Controller
    Morningstar SunKeeper 6 Charge Controller
  • Morningstar SunKeeper 6 Charge Controller - With Surface Mount
    Morningstar SunKeeper 6 Charge Controller - With Surface Mount


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Availability: In stock.


SKU: 020-01252

Quick Overview

Morningstar’s SunKeeper solar controller provides a low cost regulated output directly from the solar module to maximize battery life in small solar power applications.
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The SunKeeper is epoxy encapsulated and rated for outdoor use. By mounting directly to the module junction box and wiring through the junction box knockout, the connection is weather-proof. This eliminates the need for an additional housing for the controller. Or, the SunKeeper can be surface mounted with the included bracket.

The SunKeeper is available in a 6 amp or 12 amp version (both at 12 volts DC). To withstand the high temperatures at the solar module, the controller has been designed using extremely efficient power electronics and is rated to 70°C. The SunKeeper is also certified for use in Class 1, Division 2 hazardous locations, making it an ideal controller for solar powered oil/gas applications.

High Reliability

Rated to 70°C to operate in high temperatures at the solar module. More reliable than controllers mounted inside the junction box. Uses very low on-resistance power MOSFET’s. No need to re-rate.

Outdoor Rated

ETL approved for outdoor use without an additional enclosure. Rugged IP65, UV resistant case. Epoxy encapsulated printed circuit board and watertight connection to the module junction box.

Can be mounted directly into junction box behind solar module with 1/2" knockout, or surface mount with included bracket.

Extensive Electronic Protections

Fully protected against reverse polarity, short circuit, overcurrent, lightning and transient surges, high temperature and reverse current at night.

Longer Battery Life

Series PWM with 3 stage charging: bulk, PWM regulation and float. Includes temperature compensation at the controller or alternatively at the battery when using optional remote temperature sensor. Able to charge a zero voltage battery.

Rated for Hazardous Locations

Specifically designed for solar power systems in the oil/gas industry. Approved for use in Class 1, Division 2, Groups A,B,C,D.

More Information

Bi-color LED is easy to read from the ground when the solar module is pole-mounted. Indicates solar charging, regulation, normal nighttime operation and any controller or system faults.

Easy to Install

Fits standard half inch conduit knockout (PG 13.5, M20) in module junction box. Quickly fastens with included locknut. Wires have fork connectors for easy connection to solar module terminals.

Electrical Specifications

• Rated Solar Input: SK-6 6 amps
• Nominal System Voltage 12 Volts
• Min. Battery Voltage 0 Volts
• Max. Solar Voltage 30 Volts
• Self-Consumption Charging...7 mA, Night ........2 mA
• Voltage Accuracy ± 150 mV

Battery Charging

• Regulation Voltage 14.1 Volts (at 25°C)
• Float Voltage 13.7 Volts (at 25°C)
• Type of Charging Series PWM, 3 stage: bulk, PWM and float
• Temperature Compensation (3 choices)
- Reading temp at controller –30 mV / °C
- Attaching remote temp sensor –30 mV / °C
- Disable temp comp Defaults to 25°C
• Ability to Charge a Zero Voltage Battery

Electronic Protections

• Reverse Polarity
• Short Circuit
• Overcurrent

Environmental Specifications

• Operating Temperatures – 40°C to +70°C
• Humidity 100%
• Tropicalization Encapsulated in epoxy UV resistant plastic enclosure Conduit connection with rubber gasket seal

Mechanical Specifications

• Dimensions 99 x 51 x 13 mm
(3.9 x 2.0 x 0.5 inches)
• Weight 0.11 kg / 0.25 lbs
• Enclosure IP65
• Fitting to Module J-box PG 13.5, M20, 1/2 inch conduit
• Wire Size 2.0 mm2 (#14 AWG)
• Wire Terminations #8 fork connectors

Bi-color LED

• Green Blink 3 Times Successful installation
• Green On Solar charging battery
• Green Blink Fast In regulation
• Green Blink Slow Normal nighttime operation
• Red On Controller damaged
• Red Blink System problem
• LED Off No power


• Remote Temperature Sensor (RTS)


• CE Compliant
• Hazardous Locations: Class 1, Division 2, Groups A-D, UL 1604, CSA 22.2 No. 213-M1987
• Complies with U.S. National Electric Code
• Manufactured in a Certified ISO 9001 Facility

5-year manufacturer warranty.

Please contact us if you have any questions, or if there is no shipping weight noted for a shipping cost quote. Prices online subject to change without notice due to vendor price increases. We will contact you if current price is more than the online price prior to processing the order.