The battery won’t hold a charge when connected to the trailer, even when nothing is on and even in “store” mode. It holds a charge when when disconnected. So I guess there is an unknown power draw - what could it be?
Thanks for the replies. The batteries discharge in about a day; they are a few years old and they lasted about a week just last month with minimal use. “Store” is supposed to be the battery disconnect, except for the CO alarm, which I suspected was t...