Solartech SPM055P-N 55-Watt 12-Volt Polycrystalline PV Solar Panel High powered 55W multicrystalline solar panel Max Voltage 17.9V Max Amperage 4.84A 25.2 in x 25.7 in x .7 in 10 year limited warranty 90% of power, 25 year warranty 80% of power ouput