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NetBoy's avatar
NetBoy
Explorer
Jul 03, 2012

Adding a Digital Volt Meter to show battery state of charge

Hi, I decided to add a digital volt meter to my motorhome to show the state of charge of the batteries - it will be handy when dry camping. Here is a table from the web site "The 12 Volt Side of Li...
tenbear's avatar
tenbear
Explorer
Jul 03, 2012
helperzack wrote:
Snip...

Are there any special requirements on the 120VAC meter?


The last I knew there were 2 kinds of 120vac meters, one required a 12v power supply to power the meter, the other uses the 120vac that is being measured to power the meter. I recommend the self powering type even though you won't be able to measure low voltages, but who cares. The 12v power type may require that the 12 V is isolated from the ac being measured which may be difficult in the RV. It also requires 2 more wires.

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