Question about the upcoming 60509

Hello everyone, the upcoming Freight train is an amazing set and the perfect addition to my fleet but there’s one issue I have with the locomotive. It’s cool to see that there is an option to motorize it, I’m just not happy with the battery box being in one of the containers. Are there any solutions, like a small battery box that could fit into the locomotive or a motor with a built in battery? Note that I’m not using or owning any 9v stuff. Thank you for answers! submitted by ...