I want to use one 100 watt panel and charge controller to charge my trolling motor battery and my starter battery. Can I use a switch (200 amp) to switch the connection to the charge controller from one battery to the other? They make these switches for people who use two batteries for a trolling motor so you can switch when one battery gets weak on a fishing trip. There is also a selection to have both batteries connected at once. What I would do is have both negative battery leads going to the charge controller and then the positive leads switched by the switch. Shouldn't that work.
Here is the switch: https://www.amazon.com/Ampper-1-2-B...ncoding=UTF8&refRID=H95BVCHKYJDA7NVF5XGN&th=1
Here is the solar panel kit that I bought: https://www.amazon.com/gp/product/B07VJFXBTT/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1
Here is the switch: https://www.amazon.com/Ampper-1-2-B...ncoding=UTF8&refRID=H95BVCHKYJDA7NVF5XGN&th=1
Here is the solar panel kit that I bought: https://www.amazon.com/gp/product/B07VJFXBTT/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1