Features: - Automatic identification system voltage, 12/24V auto recognition. - Humanized LCD displaying and double button of man-machine interface. - over voltage , short circuit , over load , overcharge , over-discharge . - Working storage function: record the total run time of system, record timers of error during running time, record times of full charged battery. - Completed technical data for setup and modify. - High efficiency intelligent MPPT 3-stage charging mode. - The load control mode can be selected, the timer function can be reset for street light at night. - Discharge acity control. - Discharge counter of ampere hour. - Accurate temperature compensation, correcting the charging and discharging voltage automatically, improving the battery. - Roundly reverse connected . - Solar panels, battery, solar controller positive poles are all connected together, adopting negative MOSFET in series control circuit. Specifications: Current: 30A, 50A, 70A (optional) Rated Voltage: 12/24V USB Output: 2.4A *2 Over Current(V): 13.7V/*2 24V Over Discharge Current(V): 10.5-11V/*2 24V Temperature Compensation: -3mv/?/cell Empty Load Wastage: <45mA Loop Voltage Drop: <200mv Display: LCD Display Charging Type: MPPT Waterproof Grade: IP32 Material: Plastic Color: Black + Orange Size: 17.5 * 14 * 4cm/6.9 * 5.5 * 1.6in(30A), 21 * 19.2 * 5.5cm/8.3 * 7.6 * 2.2in(50A), 22.8 * 20 * 5.5cm/9 * 7.9 * 2.2in(70A) Package Weight: 480g-1284g Package List: 1 *MPPT SolarChargeController 1 * User Manual