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Old 08-24-2014, 10:06 AM   #1
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Join Date: May 2013
Location: North Central Vermont
Posts: 1,485
Renogy Charger Settings for Trojan T-105

When I first got my Renogy Portable Solar Suitcase, I had a single 12v battery and just hooked it up. Then I started reading the manual and found that the charger had a default battery type of AGM.
After much wrestling with the charger menu system, I found where I could change to Flooded and did that. Then I had a charger fault indication of incorrect voltage. Sure enough, it had somehow been set to 24v while I was thrashing thru the menu. Not knowing what else I had done, I did a factory reset, then changed to Flooded and things were good.
But last week, I upgraded to dual Trojan T-105 six volt batteries. I remembered reading that each manufacturer had their own charging specs and went to Trojan and found the specs were significantly different than your average 12-volt.
Back to the Renogy menu and manual and found I could only change charging parameters by selecting User for battery type. I beat through the settings, changed the charging settings (out of several others) and when I tried to save it, Illegal Parameters! Fired off an email to Renogy, but went back to the manual and menu. I found the Trojan settings exceeded the default limits on a couple of other parameters, made the changes and Success! I have emailed these settings to Renogy for review, but here is what I have for now:

Over Volt.Disc: 16.0v
Charg Lmt: 15.5v (was 15.0)
Over Volt.Rect: 15.5v (was 15.0)

Equal Chrg: 15.5v (was 14.6)
Boost Chrg: 14.8v (was 14.4)
Float Chrg: 13.2v (was 13.8)

Boost V.Rect: 13.0v (was 13.2)
Under V.Rect: 12.2v
Under V.Warn: 12.0v

Low V.Rect: 12.6v
Low V.Disc: 11.1v
Discharg Lmt: 10.6v

Equa. Time: 120
BoostTime: 120

SAVE
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Old 08-25-2014, 09:26 AM   #2
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Join Date: May 2013
Location: North Central Vermont
Posts: 1,485
I just got an email from Trojan Tech Support and they bless this charging profile for solar charging their T-105 flooded batteries in series.
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