Hello,
I have a crude (by some standards) Cargo Trailer Conversion. I have a 100W Renogy kit with a 40A MPPT controller. We are going out of town in a week and I am wanting to get the solar panel hooked up to provide some charge for lighting. For this trip, I will be running a maximum of 4 12V, 2W LED lights. (We will be gone for 5 days). My question is if there is any problem using an existing car battery to get me through this week before I drop a lot on true deep cycle batteries. I don't care about the car battery or any loss of life it causes it, I just want to know if there will be any problems with the solar panel and controller using it.