Battery condition
In the big picture of the electrical system in a 5er, if we are plugged in to shore power, does the state of charge or discharge of the battery make any difference?
Forum Discussion
You should maintain your battery all the times. They may not be used much when you are hooked up to shore power but are necessary when you are in travel mode to provide power to your Electric brakes in the event your trailer becomes disconnected going down the public roads. This is a DOT Safety Requirement.
Also the working battery provides additional support for the large DC Current draws from your on-board converter/charger like the slides and other high wattage 12VDC items.
There is also a whole bunch of parasitic 12VDC items connected to the 12VDC System that needs to be powered up when you are between shore power connections... ALot of your high wattage items have monitor and control boards that are powered by the 12VDC system...
Here is a 30A Power Distribution configuration layout that identifies some of the 120VAC and 12VDC items being utilized in the trailers... The 50A Electrical Configuration is much the same except it will have have two 50A Electrical 120VAC power Zones so that you can run additional high wattage items like two Air Conditioners etc...
Roy Ken
Also the working battery provides additional support for the large DC Current draws from your on-board converter/charger like the slides and other high wattage 12VDC items.
There is also a whole bunch of parasitic 12VDC items connected to the 12VDC System that needs to be powered up when you are between shore power connections... ALot of your high wattage items have monitor and control boards that are powered by the 12VDC system...
Here is a 30A Power Distribution configuration layout that identifies some of the 120VAC and 12VDC items being utilized in the trailers... The 50A Electrical Configuration is much the same except it will have have two 50A Electrical 120VAC power Zones so that you can run additional high wattage items like two Air Conditioners etc...
Roy Ken
