@Tross2023: Those cannot be used in parallel. To start with, the first presumably is 12 volts while the second is 24. You can safely place identically spec'd batteries in parallel. (View Post)
@Tablet asks: > ... about the wisdom of getting 2 100w solar panels and putting one in front of and one behind the roof vent, to be able to catch sun from a range of angles? I did that, but with 1… (View Post)