I just purchased a lithium for my trolling motor. It will be isolated from from the rest of my electrical system. My question is about batteries for electronics and starting battery. I currently have an AGM that serves as my starting battery and powers all my electronics, bilge pumps, livewell pumps, etc. I am thinking of using the AGM to handle just electronics and add a standard battery to handle starting duties. My question is can I wire these 2 batteries so the big motor charges both when its running or will there be a problem hooking them in parallel? If so, what is a better setup?