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Old 01-24-2014, 09:38 PM   #11
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Iggy, true as long as the engine is not running
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Old 01-25-2014, 08:35 AM   #12
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That was already stated: "Besides, when the engine is off and there is no shore power you can see the live status of your battery."

I'm not worried about voltage drop from the battery to the cigarette lighter. Went out and measured at the battery and it's pretty darn close to the reading on the cigarette lighter. I'm not looking for perfect science here, just a quick way to determine what's going on with the batteries especially if you are boondocking.

It came in pretty handy on our pontoon boat. We would be in the middle of the lake having a good time and every once in a while I would look at the meter to make sure I had enough power to start the engine.

This was really meant for folks that don't have a clue where to start looking at battery problems. Not everyone knows what a multimeter is and how to use it. If you plug the meter to your cigarette lighter and it reads out 12v you'll know you are pretty close to having a discharged battery.

Ideally: Hook up the meter directly to the battery, check the batteries with a load tester and a hydrometer.

Don't forget the principle K.I.S.S.
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Old 01-25-2014, 12:03 PM   #13
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alparmmer, we have gone from “are your batteries charging ?” to “are your batteries charged ?” I think these are two different questions.

I think Herk was right on when he identified situations, that using a meter as suggested could be misleading.

As far as the engine running, I was simply adding to Iggy’s list.

Gary
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Old 01-25-2014, 01:52 PM   #14
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Agree, the title is misleading. Could one of the moderators please change it to "An inexpensive way to check the charge/battery voltage in your coach", or something similar.

I still don't see how the meter's reading cold be misleading though. If you start your engine you will see a voltage increase letting the user know that there is a charge present. Whether it reaches the battery or not it's a different story. Same thing with shore power. You will know if the battery is being charged from the reading it shows before and after. It works for me. If I see something wrong with the numbers then I'll start troubleshooting.
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Old 01-25-2014, 02:49 PM   #15
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Quote:
Originally Posted by alparmmer View Post
Could one of the moderators please change it to "An inexpensive way to check the charge/battery voltage in your coach", or something similar
Done
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Old 01-25-2014, 02:52 PM   #16
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Awesome, thanks.
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Old 01-26-2014, 04:14 PM   #17
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I'm considering buying the digital volt gauge for my house batteries like the one in message #1 but hook directly up to my house batteries with a switch to turn it on and off.
Thanks.
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Old 01-26-2014, 04:56 PM   #18
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They are cheap enough that you could also put one in the battery bay. You could even put one on each battery to monitor each one individually.
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Old 01-26-2014, 05:27 PM   #19
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Just ordered the lighter type for a little over 3 bucks on Amazon. Silly cheap...
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