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Old 12-09-2018, 10:08 AM   #1
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Tri-Metric Monitor question

For those Tri-Metric monitor aficionados...

If my monitor is indicating a 12.2V and a 53% charge, what exactly is this telling me? I want to make sure I understand this monitor completely.

Fred M.
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Old 12-09-2018, 10:48 AM   #2
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It is telling you that your batteries are 1/2 dead, or that you have used just about as much as you should to prolong battery life. Assuming you have it, this information is available at the solar controller.

A more useful setting for the Trimetric is amp hours. This will give you a more accurate idea of the battery condition. It tracks amp hours in & out of the batteries, and let you know how far down the batteries are, and after a bit of practice, what the chances are of making up what you used during the day, or how long you will need hookups to refill the batteries.

While voltage readings can also give this information, it is a bit more difficult to get an accurate voltage reading when using solar since it is always charging during daylight. The only accurate voltage reading is at night, and hour or two after sunset.
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Old 12-09-2018, 10:49 AM   #3
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Tri-Metric Monitor question

That is telling you that your electrical system is currently at 12.2 volts. If you don’t have any inputs or outputs during the time of the reading then this is the voltage of your battery itself, otherwise both inputs (eg charging from your converter or solar) and outputs (eg lights, furnace fan, etc) will change the voltage reading to something either higher or lower than your actual battery’s voltage. This is why battery meters that use only voltage to estimate state of charge are basically a wildish guess.

Your Trimetric circumvents this problem by counting how many amps go into and come out of your battery, thus providing a much better measurement of your actual state of charge. This is true provided that you have programmed your monitor correctly, of course, so that it knows your actual battery capacity.

The 53% is your monitor’s estimation of your current state of charge.

I suggest you plug in and fill er up. Going below 50% is bad, as I’m sure you know, as is leaving a lead acid battery undercharged for an extended timeframe.

Also, doublecheck your monitor to make sure it’s programmed right. The manuals and instructions are all on Bogart Engineering’s website, and I’d be happy to assist if I can.
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Old 12-09-2018, 11:51 AM   #4
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Scott, looks like the monitor indicates -110 aH.

Fred M.
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Old 12-09-2018, 12:22 PM   #5
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Do you have dual 6v batteries? If so then that 53% state of charge pretty well matches and suggests your Trimetric is programmed for correct battery capacity. The quick reference guide is here http://www.bogartengineering.com/wp-...renceGuide.pdf Can you post all of your current settings?
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Old 12-09-2018, 01:08 PM   #6
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As mentioned, the voltage level can vary depending on the current load use, to get a valid voltage everything need to be off and no input for an hour or so. The amps or % is better, I leave mine on the % FULL setting. The amp reading being the current load, +/-.

From the Quick Reference "Between 12.0 and 14.0 volts the display is a poor indicator
of state of charge in a working system. Use % full instead."
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Old 12-09-2018, 07:49 PM   #7
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Here are my settings taken from my initial setup of the Trimetric. The second set of numbers, a slight change from my initial were recommended here on the forum. These numbers are only valid if you have the dual 6 volt Interstate flooded batteries that Escape installs as an option.

Trimetric Settings Or Latest Suggestions

P1 15.3 Or 15.2
P2 5. Or 1.0
P3 232 Or 230



The Trimetric is a nice device. It is not user friendly. I have written numerous notes all over the installation instructions. It is accurate once it is set up. Several things I have discovered is, the only number to look at is the percent (however reread the previous sentence). And be careful with the reset button, the only time to use it is when you know your battery is fully charged. That means it has been plugged into shore power for a minimum of 48 hours.
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Old 12-10-2018, 06:28 AM   #8
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I installed one in my 2009 T@da, it was very complicated to use and understand. Now I use the on board solar display.
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Old 12-10-2018, 07:59 AM   #9
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I've been experimenting with the Trimetric, SC-2030, and 200 watts of portable solar for about 2 months now. (I think we have seen the sun for a couple of hours during that time). The electronics is on a table in the garage, with the panels in the backyard, so my experience is limited.

Make sure the shunt is the only connection to the negative battery terminal, and connect a battery charger of some kind, or just the WFCO if you are in the trailer. ( I've been using the Battery Tender Plus in the garage when there is no sun here in Northeast Ohio.) You will see the voltage rise, and that percentage begin to increase.

I drag Candy out in the garage to watch the meter...but she just doesn't get as excited as I do when the sun lights up the panels!
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Old 12-10-2018, 09:22 AM   #10
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Quote:
Originally Posted by sclifrickson View Post
Can you post all of your current settings?

I do have the dual 6V batteries that ETI installed. This trailer is 2 years old.

Here are my current settings:

P1=14.3
P2= 2.0
P3=220
P4= A
P5= OFF
P6= OFF
P7= L1

While I was going through my settings yesterday, I must have pressed “reset” once too many times and it changed my “Battery % Full” reading from 53% to 100%. This morning, it reads 89%. Butterfingers that I am!

Fred M.
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