Working Principle: the current from the sunshine to the solar battery plates begin to recharge the battery through the invert controller and convert into the DC/AC for the use of the appliance, or through the grid inverter directly to the power supply network. Solar photovoltaic system was made of the solar cells (group), solar controller and batteries (group). If the output power is AC 220v or 110v, the inverter is needed. Linux brand battery plate components conventional configuration: solar unit is a device of single power available, which is equivalent to a battery of about 0.5v,While battery plate components were the equivalent of batteries group of more batteries serial or parallel connectivity. The number of components usually depends on the system voltage (battery voltage). Usually, it is the1.4-1.5 times compare to the battery voltage. Power range: mono/multi-crystalline silicon solar cell mainly include several types of 2W, 3W, 4W,5W, 20W, 25W, 30W, 35W, 40W, 45W, 50W, 55W, 60W, 65W, 70W, 75W, 80W, 85W, 90W, 95W, 100W, 110W, 120W, 130W, 140W, 150W, 165W, 180W, 200W, 240W etc.