I use a number of meters in my 2011 Georgetown. I have a digital volt meter that's permanently connected to the battery which allows me to (approximately) monitor the battery's state of charge and the proper functioning of the converter. It's on a 3-way switch, momentary ON, OFF, ON. When we're in the rv, I keep it in the ON position and use the momentary on when checking the battery voltage when the rig is in storage.
I have an inexpensive HF clamp-on AC amp VOM that is primarily used to check the RV park's power socket before I hook up. At one park, I discovered that the site I picked had voltage between the neutral and ground lines so I moved to another site and notified the park management of the problem with the box. I also have a high quality calibrated meter whose clamp-on ammeter function reads both AC and DC currents.
My most commonly used meter though is the HF "free with any purchase" meter. I always have a few of them around so one is always handy. Their accuracy, as supplied often is a little off but there is a calibration control on the circuit board that can be used to improve the meter's accuracy.
I also may be one of the few people to get a bad freebee meter from HF. One that I opened up a week ago didn't work and, when I tried to figure out why, I discovered that there was a manufacturing error with the auxiliary circuit board that the meter probes plug into. It was incorrectly soldered so that the probes don't reach the contacts on the circuit board. I'll be returning it to HF with my next visit.
Phil
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