Newpowa 100 Watts 12 Volts Polycrystalline Solar Panel 100W 12V High Efficiency Module RV Marine Boat Off Grid https://www.amazon.com/dp/B00L6LZRXM/ref=cm_sw_r_cp_api_i_XE32BECJ05ZQ37AN4KJ8
Renogy 10A 12V/24V PWM Postive Ground Solar Charge Controller Regulator Compact Design w/LCD Display for Deep Cycle Sealed, Gel, and Flooded Battery, Wanderer PG 10A https://www.amazon.com/dp/B07MVZ777D/ref=cm_sw_r_cp_api_i_S8KRJPTTQE9QKME92Z23
Your friend has shared a link to a Home Depot product they think you would be interested in seeing.
POTEK 500W Power Inverter/Car Inverter DC 12V to AC 110V Dual AC Charging Port and 2A USB Ports for Laptop, Smart Phone https://www.amazon.com/dp/B01MR569GA/ref=cm_sw_r_cp_api_i_TN6EMYQW0M2QVWSHEMZV?_encoding=UTF8&psc=1
I did something similar for my pop up pickup bed camper using stuff similar to these links. Works great. Depending on your needs you could go different size battery or different inverter. Hope this helps…
And i second the comment on propane heater. Tank top one worked fine in my 12x14 shed.
I read they will do better in a cloudy environment like mine.
The difference will (only) be a few percent, and do you *need* that "easy setup" or is a somewhat more complicated construction possible?
1x 100W, $ 84.99
2x 100W, $170.99 (East-West setup?)
If you look closely, the frame on all those panels have 4 holes on the back, nice for DIY setup.
The MC4 connectors are watertight, use an extension set to get it to your charger+battery location (then cut off the connectors if the solar charger has screw terminals), and you can use MC4 splitters to connect 2 or 3 panels in parallel.
If you can spare a few extra dollars, choose an 'MPTT' solar charger, much higher efficiency (and you can connect a few panels in series, making the wiring simpler).