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Old 08-19-2016, 08:27 AM   #1
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Trimetic 2030 and SC-2030 Charger

So I'm out camping and my trimetic is stating 12.2 volts but 94% charged? What's up with that? 12.2 is roughly 60%, isn't it? Any of you guys got any clues?

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Old 08-19-2016, 09:56 AM   #2
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For me, over the past couple weeks, I have been dropping to 12.0v and reading @ 80%. It was a reflection of reduced capacity in my batteries, we're off to get a couple 6v golf cart batts this weekend. Yours may need checked and topped off. If they're even maintainable, mine were not.
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Old 08-20-2016, 07:13 AM   #3
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They don't go by the cut off at 12.0V rule.. most of them read charge down to 9.8 before cutoff..
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Old 09-06-2016, 11:10 AM   #4
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First Boondocking trip

I am building a solar panel system using TM2030 and SC2030. Tested it in the yard the other day, worked really well. I purchased two Trojan 6v 105-RE's and a couple 85 watt panels. Built a frame for the panels, and connected with 12 foot long 6 AWG wires from the controller to Panels. Testing showed about 9+ Amp-Hr and topped off the battery to 100% on a sunny day. Set P1 at 14.4, but I may increase it to 14.8 as I monitor the charging. Trojan liquid batteries can take some overcharging very well, and get more amps out of it too as a result. I will set up Panels next to trailer facing the sun, a little inconvenient but more reliable than flat panels on the roof, and I can avoid shading. Going on a long two week trip with mostly boondocking in a couple weeks. I'll collect data and report how it went, anxious to see if I failed or succeeded in the design and setup!
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Old 09-06-2016, 11:24 AM   #5
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Nice work on the solar and welcome to the boondocking club! I love my solar beyond explaining. Check out our solar sub-group, it's slow around there but we pop in from time to time and lots of info to find. My charger pours in about 14.8 first thing in the morning too, you can hear the batteries boiling then it evens out to 13.6 for a while and then floats to 12.8. I keep a good eye on my water and all is good.
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Old 09-06-2016, 11:56 AM   #6
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Quote:
Originally Posted by jaycojls View Post
So I'm out camping and my trimetic is stating 12.2 volts but 94% charged? What's up with that? 12.2 is roughly 60%, isn't it? Any of you guys got any clues?

Thanks,
Jeremy

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I am not familiar with the Trimetric products, but they seem to be well regarded, so I assume it is working correctly.
Are you reading the voltage under load? You cannot estimate state of charge if the batteries are (or recently have been) under a load or charge for that matter. I assume the trimetric is basing its SOC on the amp-hrs added/removed from the battery.
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Old 10-11-2016, 04:35 PM   #7
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+1 to the above. Make sure you aren't under load when reading voltage.

You can also look at the amp-hours from full setting and see what that is saying.

Was the Trimetric ever programmed specifically for your battery? The % full reading is based on a battery capacity in Ah that you have to set. If this is not set properly the % full will not calculate properly as it is based off the Ah from full that has been recorded.

The facotry default setting for Ah is 220 so if your batteries are not 220Ah you will need to adjust it.

http://www.bogartengineering.com/wp-...ions5-6-16.pdf

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