Using shore power without battery hooked up
We often use our Surveyor when we go to our hobby farm for an overnight. I keep the battery disconnected and hooked to a Battery Tender when it is stored there. We have been hooking the trailer up to 110V when we are there but not connecting the battery. Do any of you have any information as to whether this is harmful to the converter? It would be trying to charge a battery that isn't there. My sense is that that is OK since there is no completed circuit. Any evidence to the contrary? Don't want to take out my converter for something stupid.
2012 F150 FX4 Ecoboost, 2016 Surveyor 274BHS
2003 Yamaha FJR1300, Demco Premiere Slider
1969 John Deere 1020, 1940 Ford 9N, 1948 Ford 8N
Jonsered 535, Can of WD-40, Duct Tape
Red Green coffee mugs