Easier and safer： Reliable over voltage protection, short circuit protection, overcharge protection, overcharge protection, over discharge protection. Accurate temperature compensation, automatic correction of charging voltage and discharge, improving battery life. Reverse connection protection. Function： Load control mode can be selected, timer function can be reset for street lighting at night.Discharge capacity control.Working storage function: record total system running time, record error timers during running time, record fully charged battery hours. < p>Features： Automatic identification system voltage, 12/24V automatic recognition. Humanized LCD display and human-machine interface double button operation. Complete technical istics for setup and modification.High efficiency 3-stage MPPT smart charging mode. Easy to use： Solar panels, battery, solar charge controller positive poles are all connected together, adopting negative MOSFET in series drive circuit. Purchase service： If you have any questions about the installation or product quality, please contact us in time. We will solve it as soon as possible. Specifications: Current: 50A Rated voltage: 12/24V USB output: 2 .4A*2 Overcharge current (V): 13.7V/*2 24V Overdischarge current (V): 10.5-11V/ *2 24V Temperature compensation: -3mv/℃/cell Empty charge waste: &lt;45mA Loop voltage drop: &lt ;200mv Display: LCD screen Charging type: MPPT Waterproof grade: IP32 Material: plastic Color: black+orange Size: 21 * 19.2 * 5.5cm/8.3 * 7.6 * 2.2in (50A)