Specialty Concepts Mark 22 Solar Charge Controller

The MARK/15™ and the MARK/22™ are solid-state charge controllers for use in PV systems with currents up to 22 amps. They are available in 12 volt and 24 volt versions. The Mark 15 and 22 include a full-featured LCD meter to display battery voltage, array current and charge set-point. They are intended to flush-mount within a wall for a very distinctive appearance. Options include low-voltage load-disconnect and battery temperature compensation.

Special features include fuse protection for the battery and the solar array. An easy to use and read LCD display and a LED bar graph. The bar graph can be switched off. The Mark series of solar charge controllers can fully charge a completely dead battery that is able to accept and hold a charge. This feature is something that most photovoltaic charge controllers can't do!

The Specialty Concepts Mark22 charge controller has become the favorite charge monitor/regulator at RV Solar Connection, llc. For the money this outstanding charge controller can't be beat. The fact that it can bring a dead battery back to life is really worth considering.

Both the Mark 15 (pictured above) and the Mark 22 (pictured left) is pleasing to the eye and looks great with modern RV's wood finished interiors. Pictured to the left is a flush mount Mark 22 with a Vector inverter remote switch that was installed in the kitchen area of a 5th wheel trailer.

The Mark 22 solar controller is capable of managing an array output of 22 amps and only costs $10.00 more than the Mark 15 which has a 15 amp limit. With this in mind the better value is the Mark 22 which allows the customer room for future expansion of the solar array.

The face of the Mark 22 has a user selectable switch with four positions. When in the top position the LCD display will show the batteries voltage. The second position displays the solar array current. The third position is for displaying the battery charge set point. When the charge set point is reached the Mark 22 turns off the power supply from the solar modules meaning the batteries are fully charged and the charged light will illuminate. The set point is preset by RV Solar Connection when we install your solar system. The fourth position turns off the led bar graph but leaves the LCD display on.

While charging the Mark 22 solar controller will feel very warm to the touch. It is normal for the unit to generate some heat while the controller is charging the batteries.

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