20A MPPT Solar Charge Controller 12V/24V with LCD Display, Timer and Light Sensor

Shot Description

Maximum Power Point Tracking solar charge controllers (MPPT) are different than the traditional PWM solar charge controllers in that they are more efficient and in many cases more feature rich. MPPT solar charge controllers allow your solar panels to operate at their optimum power output voltage, improving their performance by as much as 30%. Traditional solar charge controllers reduce the efficiency of one part of your system in order to make it work with another.


1. High-speed MPPT high technology: MPPT with LCD display, efficiency > 99%, Employs a DC converting circuit,conversion efficiency > 96%.

2. More selections for your need: five output modes: Manual, Standard, Timer, Light sensor, the Light sensor on + Timer off.

3. Advanced electronic protection: overcharge, over discharge, overload and short circuit protection.

4. 3-stage charging algorithm, impulse, bulk and float.

5. Power meter function: LCD display shows the battery voltage, charging current, charging power, output status.

6. Built-in timer, suitable for a periodic discharge system such as solar street lights, solar pumps etc.


Rated system voltage 12V/24V DC
Max open circuit voltage of solar panel           15-50V DC
Max output current 20A
Max discharge current  20A
Over-discharge voltage 10.2-12.5V(+/- 0.2)
Restart voltage 10.2-13.5V(+/- 0.2)
Constant voltage (Over charge )voltage 13-15.5V(+/- 0.2)
Float voltage  12.5-14.5V(+/- 0.2)
Converter type Buck
Converter efficiency >96%
Max increase efficiency  >43%
Tracking efficiency >98%
Precision of clock +/-50S/Month
Operating temperature -20 to +50 degree C
Protect class IP22
Size 140mm*147mm*42mm(5.53*5.81*1.66In)
Weight 550g(1.21lbs)


These solar charge controllers are suitable for a periodic discharge system such as solar street lights, solar pumps etc.