70A/50A/30A MPPT Solar Charger Controller- Solar Panel Battery Regulator LCD Display with Dual USB Port Display 12V/24V Safe Protection Safe Protection Features: --PROTECTION FUNCTION: Built-in over voltage protection, short circuit protection, over load protection, overcharge protection, over-discharge protection improves system efficiency and battery life. --STORAGE FUNCTION: The solar charge controller helps you record the total run time of system, timers of error during running time, times of full charged battery, which offers reliable working storage. Specifications: Current: 30A, 50A (optional) Rated Voltage: 12/24V USB Output: 2.4A *2 Over Charge Current(V): 13.7V/*2 24V Over Discharge Current(V): 10.5-11V/*2 24V Temperature Compensation: -3mv//cell Empty Load Wastage: