The inverters transform direct current (DC) into alternating current (AC) and bring the low voltages of the panels and batteries up to 110 V, 220 V, or other voltage used by an electrical appliance. In addition, some inverters can also charge batteries as long as they are associated with a generator or the AC network.
The solar panels supply energy in the form of direct current (DC) and, also the batteries, receive and supply in DC. For this reason, unless all your devices can work with this type of current, you will need an inverter. Today, virtually all of our electronic devices use alternating current (AC), and therefore only small isolated systems can dispense with the inverter.
Pure Sine Wave Inverters – Produce a practically perfect sine wave and many times even cleaner than the power grid itself. They can be used with virtually any device. Although more expensive, their price has been approaching the modified wave inverters and has been increasingly used.