Key Features Automatically detect 12V/24V/36V/48V DC system voltages Innovative MPPT technology with high tracking efficiency up to 99% and peak conversion efficiency of 98% Deep cycle Sealed, Gel, Flooded and Lithium battery option ready Electronic protection: Overcharging, over-discharging, overload, and short circuit Reverse protection: Any combination of solar module and battery, without causing damage to any component Customizable charging voltages Battery Safety Use only sealed lead-acid, flooded, gel or lithium batteries which must be deep cycle. Explosive battery gases may be present while charging. Be certain there is enough ventilation to release the gases. Be careful when working with large lead acid batteries. Wear eye protection and have fresh water available in case there is contact with the battery acid. Carefully read battery manuals before operation. Do NOT let the positive (+) and negative (-) terminals of the battery touch each other. Recycle battery when it is replaced. Over-charging and excessive gas precipitation may damage the battery plates and activate material shedding on them. Too high of an equalizing charge or too long of one may cause damage. Please carefully review the specific requirements of the battery used in the system. Equalization is carried out only for non-sealed batteries. Do NOT equalize VRLA type AGM Gel Lithium cell batteries UNLESS allowed by battery manufacturer.