Phocos CX 12/24-volt solar charge controllers have exceptional features at a very good price. They feature PWM (pulse width modulator) regulation, with integrated temperature compensation, low-battery load disconnect and a comprehensive display. Battery state of charge, charge and discharge current and faults are clearly displayed on an LCD in a bar graph.

     These only consume 4 mA at night. The deep discharge protection function can be set up to three different modes: voltage controlled, SOC controlled or adaptive (fuzzy logic).

     CX controllers have a built-in data logger. Data can be accessed by a PC by using the CX-USB interface converter. Data includes maximum and minimum battery voltage, state of charge at beginning and end of day, amp-hours produced by PV array and more. Daily data is available for the past 7 days.

     Other features include audible warnings and a programmable night light function.

     Phocos charge controllers cannot be used in systems where the array, battery and load negatives are grounded, hence they are not for use in systems that meet the NEC. Dimensions are 3.5" x 3.5" x 1.5". Not UL Listed. 3-year warranty.