In a solar energy array, a converter is an electrical device that adjusts direct current (DC) voltage output either up or down from the input level. Often called charge controllers, these DC-to-DC converters can maximize the energy harvest for photovoltaic systems and help regulate the amount of DC energy. Sometimes mistakenly called a converter, solar panel inverters deal less with voltage level and more with current type, switching power from DC to alternating current (AC) — what most home appliances use to function. Without a solar. The equipment you need will largely be determined by the solar setup you want to run. Users who plan to rely heavily on a battery bank, for instance,. Here are a few popular converter and inverter options available for purchase online. Keep in mind that not all devices are compatible with all panel setups, so you should consult your.