I have purchased a Kid and I am installing it in the next week or two. I have 1400 PV watts and a nominal 48v 16kwh lithium bank. I live where it gets cold, very cold in fact, and I have a heating system on the lithium bank and monitor its temperature. I need a safe way to prevent the Kid from charging when the temp goes below a setpoint of about 32F in case the heating is not going for some reason to prevent battery damage. It looks like I can't control the Kid over RS232 or USB, so that's out. I can put a relay in the PV input to the KID, but that brings its own problems. Is there a creative way to use the battery temp sensor to control it? It's not perfect, but I just need this as a failsafe.
I will ask about that today, I know Mario is knee deep in the new 600volt charge controller but it is a good idea to have low and high temp shutoff points
Maybe a separate control - temperature controller with sensor on the batteries going to a SSR in the PV input line ? Would that work ?
Larry
Quote from: ClassicCrazy on April 25, 2019, 09:38:54 PM
Maybe a separate control - temperature controller with sensor on the batteries going to a SSR in the PV input line ? Would that work ?
Larry
Yep. Sure should work