The GVB-8-Li-56.8V-WP from Genasun is a Solar Charge Controllers with System Voltage 56.8 V, Rated Current 8 A, Power Rating 350 W, Efficiency 96 to 99 %, Operating Temperature -40 to 85 Degree C. Tags: Maximum Power Point Tracking (MPPT). More details for GVB-8-Li-56.8V-WP can be seen below.