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Post by oldcrow on Dec 9, 2017 20:13:30 GMT -8
I have a Renogy Eclipse 100w 12v panel Renogy Commander 20a MPPT controller with MT50 When selecting battery type in controller set up and AGM would be sealed correct? How do these numbers look and what do they mean? ![]()  |
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Post by tattoo on Dec 10, 2017 1:14:59 GMT -8
It looks happy to me.. It also depends on where the sun is and what the draw is...
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Post by oldcrow on Dec 10, 2017 4:37:52 GMT -8
What is the 3.3 amp under the battery?
Is that the draw on the battery?
As of now I have my load hooked to the battery rather than through the controller.
When the load is off should amps go to zero?
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Post by tattoo on Dec 10, 2017 9:49:03 GMT -8
I don't believe it, 3.3 that's the reserve amps that are in the battery... That's like the SOC, it means NOTHING... It shouldn't even be there...
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Post by tattoo on Dec 10, 2017 9:52:18 GMT -8
I don't like hooking anything to the controller.. What are you planning on running off of your system?
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Post by rabird on Dec 10, 2017 14:52:51 GMT -8
oldcrow, the panel is operating @ 18.9v and making 2.3A, the product is ~45 watts.
The 45 watts is going to the battery, 13.2v batt voltage and 3.3A, that product is 45watts.
I hope the battery gets to 14.4v daily.
AGM would be sealed unless there is a better voltage profile the battery maker prefers and keeps you batts happier.
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Post by tattoo on Dec 10, 2017 17:26:37 GMT -8
oldcrow, the panel is operating @ 18.9v and making 2.3A, the product is ~45 watts. The 45 watts is going to the battery, 13.2v batt voltage and 3.3A, that product is 45watts. Bird that's all well and good but his question was what does it mean?? |
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Post by rabird on Dec 10, 2017 17:44:28 GMT -8
I'll wait for his further comments/questions if he did not understand my response.
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Post by tattoo on Dec 10, 2017 18:50:11 GMT -8
I'll wait for his further comments/questions if he did not understand my response. Cool.. we shall see... |
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Post by oldcrow on Dec 10, 2017 20:24:58 GMT -8
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Post by tattoo on Dec 11, 2017 5:45:25 GMT -8
That battery should work, Not the one I would have chosen but in your case it should be just fine.. |
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Post by rabird on Dec 11, 2017 7:25:45 GMT -8
use this solar calculator to determine how much 'sun' ya get where you are/time of year/panel tilt. www.solarelectricityhandbook.com/solar-irradiance.htmlthe ave daily 'sun' can be multiplied by the panels amps to estimate how much power can be made daily for various tilts/months of the year. |
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Post by oldcrow on Dec 11, 2017 8:51:54 GMT -8
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Post by rabird on Dec 11, 2017 9:10:41 GMT -8
Both batteries have the same specs.
I always get confused since 15 degress can also be 75 degrees!!!!
Your 100w panel can collect ~5-6Ah in one hour of full sun directly perpendicular to the panel (blue sky day).
The link I posted suggest a flat panel in MN collets less than 2 hrs of fun 'sun' in an entire day in Dec, more at other times of year.
So if your panels were flat I'd expect 2 x 6 or 12ah a day charge (that;s how I look at it for PWM). Alternatively you can expect 90% from your panel (with mppt controller) so 100w x .9 = 90w times 2 (for dec flat) and get ~180w of power per day in Dec.
Much more in July when a flat panel can collect 6 hrs of 'sun' a day. 1 'Sun' is 1kWh/meter squared, what the panels are rated @.
Your mt5 can display daily/monthly/total charging in kWh.
correction, flat panel MN gets mush less than 2 hrs 'sun' per day december for whatever town I picked!!!!
let me no forget that COLD helps out MPPT produce more energy.The panel's max power pt is higher when COLD.
COLD may explain the 18.9v the panel was operating @, spec would be lower.17.?v .
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