Expected voltage sag?
I've got two 6 volt GC batteries. I have an inverter just powering a laptop. It's pulling under 100 watts AC. What kind of voltage sag would you expect that to put on these batteries if they were full...
Forum Discussion
pianotuna wrote:
100 watts = a 10 amp load @ 12 volts. That should produce minimal voltage drop--not at all what you are seeing.
In his original post the OP said he was powering "just" the inverter with his two 6 volt batteries ... if so, does this mean the batteries were disconnected entirely from the trailer itself? Since the OP wasn't clear his battery bank may not be seeing just a 100 watt load but rather much more, some from the inverter itself, some from the load it's powering, PLUS additional load from the trailer's own 12 vdc system, which could be considerable depending on just what may be running at any given time, particularly noticeable draws such as a fridge climate control system that hasn't been forced off. It's easy to overlook other draw but all draw contributes to voltage drop.
