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Old 11-20-2013, 02:50 PM   #15
Rivet Master

2005 25' Safari
Salem , Oregon
Join Date: Mar 2006
Posts: 7,239
Images: 18
Blog Entries: 51
Hi, there is the possibility that my battery monitor won't read exactly the same as my Fluke meter. Without a load on the system, I don't believe that there would, could, should, or will be any difference in the 12 volt reading at the battery or any other place on my trailer. To be actually different there has to be a load, short, poor hot, or poor ground connection. Your 12 Volt battery/ies aren't trying to start an engine. There is no major load on your 12 Volt system in your trailer.


2005 Safari 25-B
"Le Petit Chateau Argent"
[ Small Silver Castle ]
2000 Navigator / 2014 F-150 Eco-Boost / Equal-i-zer / P-3
YAMAHA 2400 / AIR #12144
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Old 11-20-2013, 03:30 PM   #16
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helmsman's Avatar
1967 22' Safari
Long Beach , California
Join Date: Nov 2004
Posts: 85
Hi Birdmaestro:

The cigarette lighter voltage meter method mentioned here is easy, cheap and works great.

(A little off topic, but I believe it relates). Years ago I temporarily put an amp hour meter between the battery and the 12 volt fuse box. I turned on one 12 volt item at a time and wrote down how much each item was drawing from the battery. I posted the list inside a cabinet and used it to estimate how much was being taken from the battery. Not perfect, but it works for me. -- Enjoy!

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Old 11-20-2013, 03:46 PM   #17

2003 25' Classic
Zanadude Nebula , WNY
Join Date: Jun 2007
Posts: 10,802
Images: 1
Thumbs up meter not load...

The difference for me is in the $39.00 Volt-Minder & $11.00 Druk.
I just note that both cheep meters are consistently low.


AF #1

"Sticks & stones can break your bones...and hail will dent your Airstream"

So when is this..."old enough to know better" supposed to kick in?
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