This is a good Starter Solar Panel - especially if you can find on sale for under $100....
Perfect for 12-volt battery charging or multiple panels can be wired in series for 24/48-volt battery charging or for grid-tied applications. Diodes are pre-installed in junction box and a pair of 31-inch cables with MC4 connectors comes with the panel automatically. Panel can withstand high wind (2400Pa) and snow loads (5400Pa); resistant aluminum frame which allows the panels to last for decadesHigh modules conversion efficiency. Ideal output: 500 watt hours per day (depends on sunlight availability) 25-year transferable power output warranty; 5-year material and workmanship warranty
Renogy 100 Watts 12 Volts Monocrystalline Solar Panel ... by Renogy for $134.09 http://amzn.to/2yeYqkK
Source: Renogy, Amazon