I thought this would be easy. It never is. I am building a simple weather station. I have a 10W solar panel attached to my lithium batteries through a relay, controlled by the Arduino.
The hardware has me stuck. I want to use a solid state relay (SSR), but a DC SSR is expensive. A relay will wear out. Where is the middle ground? Is there a cheap SSR that can handle 1A @ 12V? Or is there something else?
Looking to build lots of these stations, so costs add up fast!