SamHamT needs to post the battery bank type and size. If it's a small to medium size bank, than I have a Dolphin 40amp charger I'd be happy to offload for very cheap.
Whatever you do, make sure you know what you are doing when connecting all the cables. Using incorrectly sized cables can lead to a fire. Just be knowledgable and thus safe. It's actually a simple project if you research and size it properly.