Is there an AC adaptor that can be used with the S50? I'm interested in plugging it in, while using it in my backyard.
You can just use the USB C cable that comes with the Seestar and a charging block. Plug it into an extension cord to the wall or use a portable battery back up such as a Jackery.
I'm using the charger of my very old LG tablet. The tablet died about a year ago, but the 600 mA charger is perfect for my Seestar.