It makes sense to get everything you need all in one go - and we've made that really easy with our solar panel kits! The kits include the solar panel itself, an appropriate regulator, and all the cables, connectors and fuses needed to get the system working safely.
For boats and motorhomes with battery banks already in place, you won't need anything else - with the exception of mounting brackets, and perhaps a cable gland to bring the cables through a deck or roof. The most appropriate bracket to buy depends on your application - and of course you may just prefer to make your own anyway.
If you are starting from scratch, we can of course supply the batteries themselves too. And if you want something slightly different, just ask - we make the kits up to order, so it's no trouble to provide a different regulator, or different lengths of wiring.