The BVE Lithium Battery bank stores the power needed to run all of the equipment in the conversion. Each lithium battery is 15kWh for a total of 30kWh. The batteries are maintenance-free. To turn on the batteries for the first time, flip both breakers up into the “ON” position, then press the ON/OFF button. It is not necessary to turn off the batteries unless they will not be used for more than 2 days. While the batteries are on, the LCD Panel can be turned on by pressing the white “MENU” or “ENTER” button. This provides the battery percentage and other valuable information.