Portable suitcase solar panels

From what I’ve read, there are two major differences between crystalline and amorphous panels: the crystalline ones are more efficient and longer lived. So 100 watts of the former would be a little smaller panel and we are talking 25 years vs 10 years.

I have a 120 watt one & it works great. I've attached a quick disconnect to the coach battery, under the side entrance, so I do not have to open up tha battery box. I used SAE connectors. I also got an extension cord to help me park in the shade yet put the panel in the sun. It did come with a 10 amp controller which I replaced with a better 20 amp one so I could make adjustements and add another 120 watt portable which I have yet to do.

“Top off” meaning you will charge your batteries in another way to almost full? Then rely on the suitcase? Why not do it right for full solar recharging almost every day with a properly sized roof mounted solar system?

Are you ready for...set up every morning when you go outside? My roof mounted panels are already working. Watch for theft and move around as sun rises. Going out for lunch? Put panels away to prevent theft. Come back from lunch/sightseeing...put panels back out. Watch for theft and move as sun sets. Put panels away for night. Repeat tomorrow. NOT fun!

I have one, it has a built in controller. You connect to the battery via some battery jumper cable clamps except smaller versions. If you have 2X6V then connect across both. For multiple 12V I'm not sure. It does work. As for monocrystalline I've been told there is little effective difference between those and the amorphous type. But I'm no expert.