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Old 09-10-2019, 03:16 PM   #1
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Max battery charge now 90%

My solar electrical system used to get to 100% as indicated at the solar controller display. Now it is only maxes out at 90%, which seems odd. The battery fluid levels are well above the plates, so that's not the issue. My trailer is a 2017, 17B with dual batteries. Is the age of the system at play here?

TIA
David
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Old 09-10-2019, 03:20 PM   #2
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Have you cleaned your panels?
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Old 09-10-2019, 06:41 PM   #3
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If you watch the ETI video on solar system 90% is normal until a complete equalization cycle then should go higher. If the batteries are getting older then it will slowly drop off as they age.
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Old 09-10-2019, 06:43 PM   #4
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What's the voltage at? I believe the gopower converts the voltage to a %, which isn't a great indicator.
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Old 09-10-2019, 07:05 PM   #5
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Thank you for the feedback so far.

1. My panels are not pristine but relatively clean. I may be wrong but I assume even dirty panels would still charge batteries to capacity, just not as fast. Is that a proper assumption?

2. The trailer is two and one-half years old. The batteries are likely not too much older. The equalization period should be over by now, I believe. This assumption is bolstered, I think, because the display panel had been showing them at 100% until a few weeks ago. Maybe the the 90% reading is a reflection of the aging process? That reasoning appeals to me, given the age of the trailer. Comments?

3. The voltage registers at 13.something (I cannot recall the last reading earlier today.) That seems pretty good. It's also consistent with previous readings of voltage. And, yes, My system is the GoPower one that Escape offers.

Thanks again,
David
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Old 09-10-2019, 07:11 PM   #6
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Quote:
Originally Posted by David Todtman View Post
Thank you for the feedback so far.

1. My panels are not pristine but relatively clean. I may be wrong but I assume even dirty panels would still charge batteries to capacity, just not as fast. Is that a proper assumption?

2. The trailer is two and one-half years old. The batteries are likely not too much older. The equalization period should be over by now, I believe. This assumption is bolstered, I think, because the display panel had been showing them at 100% until a few weeks ago. Maybe the the 90% reading is a reflection of the aging process? That reasoning appeals to me, given the age of the trailer. Comments?

3. The voltage registers at 13.something (I cannot recall the last reading earlier today.) That seems pretty good. It's also consistent with previous readings of voltage. And, yes, My system is the GoPower one that Escape offers.

Thanks again,
David
I found that the GoPower % reading rarely goes above 90% unless you spend a couple of days running on the converter (plugged into a pedestal).

Page 19 of the PDF manual notes that the only time the display will read 100% is after equalization OR after using the boost button to force a second absorption phase. The manual states that 90% is >= 12.8V (a fully charged battery).
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Old 09-10-2019, 07:23 PM   #7
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When we got the solar put on the 21, Nigel was very specific in telling me 90% is 100%. He said a lot of folks don’t get the concept as explained by Jon Vermilye. About a year later I happened to look at the readout and it said 100%. I said , “today must be equalization day “ I rarely look at the percentage. I look at a readout on a 12v outlet gizmo and it’s always adequate. We are easy on electric use when not plugged in and the solar gets it back up to 13.6 by about 10 or 11 AM. No inverter.
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Old 09-10-2019, 07:32 PM   #8
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I rarely look at the percentage. I look at a readout on a 12v outlet gizmo and it’s always adequate.
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Thanks for the response. Please tell me the name of the 12v outlet gizmo.
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Old 09-10-2019, 07:36 PM   #9
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Originally Posted by David Todtman View Post
My solar electrical system used to get to 100% as indicated at the solar controller display. Now it is only maxes out at 90%, which seems odd. The battery fluid levels are well above the plates, so that's not the issue. My trailer is a 2017, 17B with dual batteries. Is the age of the system at play here?

TIA
David
I wouldn't worry about it. The GoPower display doesn't tell you much about the condition of the batteries anyway. It's just a voltmeter and is not an accurate indicator of battery status most of the time.

https://www.technomadia.com/2008/05/...ry-monitoring/

If you are serious about monitoring the charge on your batteries, get a Victron or Trimetric battery monitor.
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Old 09-10-2019, 07:44 PM   #10
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