House battery voltage under draw?
I have a new (to me motor home) and an upgrade from my old one. In my old RV, I had to check the house battery voltage manually. With the new rv, I have a switch on the wall. However, when I check t...
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It may very well be entirely normal, as was mentioned, especially if the meter is taking its reading from somewhere not near the batteries and its a fairly high load; you have wire losses etc. to also add in.
I would suggest checking that the connections to the battery and ground are all good and clean and tight, and that the wire terminations on them are solid. A (comparatively) high resistance connection will readily cause these voltage drops. It is also possible for an internal connection in a battery to become poor and high-resistance; I had a battery, since replaced, that did this between the end cell pole and the stud where the wire attached. I don't gather that this is a particularly common failure.
I would suggest checking that the connections to the battery and ground are all good and clean and tight, and that the wire terminations on them are solid. A (comparatively) high resistance connection will readily cause these voltage drops. It is also possible for an internal connection in a battery to become poor and high-resistance; I had a battery, since replaced, that did this between the end cell pole and the stud where the wire attached. I don't gather that this is a particularly common failure.
