We carry 12v Panels as well as 200W to 300W Solar panels . Most Installations will use a 250W Solar Panels. These are guaranteed to last 15-20 years.
Solar Panels are groups of Solar Modules mounted together.
A solar cell is one cell.
A solar module is a group of cells mounted in to a sheet
A solar panel is a group of solar modules connected together on a rack and normally placed on the roof etc.. as a unit and can be called a solar array.
A solar array is a group of solar modules or solar panels all mounted and wired together to form a single unit.
Like a battery bank is a bunch of batteries hooked together and the batteries are made of cells.