Just built my new solar suitcase charger.
Back when I bought the big 160 watt panel for the roof of my camper I also bought 2 smaller 60 watt panels. Couldn't beat the price.
I placed the panels side by side on a table and connected them with 3 small hinges I had.
Pop riveted on.
I added some web strap handle to carry the suitcase.
I used 10 gauge automotive primary wire to connect the 2 panels in parallel. There wasn't room in the connection box for 8 gauge connectors. The other end of the short cables go to a color coded (orange) Anderson powerpole connector.
The Anderson connector plugs into an extension cable I made out of 8 gauge duplex marine cable. with Anderson connectors on each end. Other than the few inches of 10 gauge at the panels the entire wire run is 8 gauge.
This extension plugs into a connector at the back of the camper. Inside the wire goes through a fuse to the charge controller. It's wired parallel to the main panel on the roof.
I still haven't decided on how I'm going to do the legs just yet. I'm thinking some aluminum angle that folds out from each end on the sides. But till I've used it a few times and figured out the angles I need I'll just prop it up on whatever is handy.
Together these panels make 120 watts. added to the 160 on the roof that 280 watts of solar power. Nice to have the extra in the winter or at times when it's cloudy or otherwise have a short time to charge the battery.
Yesterday when I tried it out it was very cloudy. And the camper battery was at 100%. The fridge has been turned off since mid December. So I turned it on max and turned the temp down to 0* to draw the battery down for a few minutes. Per my Trimetric monitor as soon as I plugged the panels in the amperage being charged doubled and the voltage went up a couple of 10ths. I consider this a success. even with very little sun the battery was topped off in a few minutes.
I intend to pick up a small self contained charge controller to add to this. I'll use the same 8 gauge cable and an Anderson connector to be able to connect the charge controller to the extension cable. I'll do the same on the output side so I can switch battery connection by just plugging them in. This way I can use this setup as a stand alone battery charger. My trolling motor batteries in the boat need charging after every trip. I can use this to do that at home or even on the river.