I have 2 100 watt panels and 30amp controller to charge 2 12volt batterys would like to know what size agm batterys to buy need help am a newbe with all this thank you
If you are running lights and TV I'd think that a 200AH bank would be enough. I'm surprised your current one is not sufficient as it looks like you have 2 160AH batteries? A 200AH bank gives you a 100AH usable output your panels should easily replace 100AH per day. If I read right and you have 320AH now or 160AH usable I think your batteries are not functioning well?