When I bought this trailer here, it did not come with a battery. I bought a cheap deep cycle from the big box mart and it is almost burned up. I expected it to last a year and it exceeded that. When I...
If you can build a good strong box for the battery's, it will be better, just make sure that there are some breathing holes in case of gassing, the box will also protect the battery's from theft, they cut the cables and lift off.