I am looking at the Powerfilm also. My setup is for a teardrop camper with a Norcold fridge, led lights, and fan. The rig will be the Flex 1500 with a laptop top and speakers. Getting ready to buy a Duracell AGM group 24 battery with 79 Amp hours... What is the amp hour on your battery? How does your panel perform in shaded or overcast skies? My goal is to be able to top off the battery during the daytime. I am thinking the 120 to 160 watts might do it.