The GVB-8-Li-14.2V from Genasun is a Solar Charge Controllers with System Voltage 13 V, Rated Current 8 A, Power Rating 105 W, Efficiency 95 to 97 %, Operating Temperature -40 to 85 Degree C. Tags: Maximum Power Point Tracking (MPPT). More details for GVB-8-Li-14.2V can be seen below.