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Post by timsim00 on Dec 21, 2016 9:49:53 GMT -8
I currently have an issues where if I turn off my inverter for my 5 hours of peak sun, I can charge my batteries to 100% (14+ VDC). As soon as I turn on my Renogy 2KW inverter, the batteries drop to close to 60% and holds steady, this is without any load on the inverter at all.
Any thoughts?
Panels: 4 100W 12V Renogy Mono panels
Charge Controller: 40A MPPT Renogy CC
Batteries: 4 6V 230AH batteries in series and parallel for a 12V system @ 460AH
PS. I am about to install (2) 150W 12V panels in parallel with my current four panels in a parallel series. So, my total Amps per hour now is about 20A, with the new panels will be closer to 36Amps per hour.
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Post by johann on Jan 29, 2017 17:32:32 GMT -8
14 some volts on the battery does not mean that a battery is charged, while the battery is charging or when you disconnected the battery for a view minutes.
You need to disconnect the battery from the charger or load for about 4-6 hours or overnight to see if the battery is charged. A 100 % charge is 12.8 volts. Where do check the battery voltage? At the battery or at the inverter ? What size wire do you have on the inverter? What inverter do you have? A Modified sine wave inverter can use 40 watts to 80 watts in idle ( power on and no load applied). The cheaper brands use more power.
Your 400 watt panel system is putting less than 300 watt per hour into the battery and with an average of 5 hours of usable sun exposer here in the US that is no more that 1500 watts per day and in the winter it is even less. You loose about 40% of power between the panels, charge controller and charging and discharging batteries.
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mel
New Member
Posts: 31
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Post by mel on Jul 14, 2017 8:19:32 GMT -8
I have the Renogy 400 watt eclipse premiom panels a 40a commander c/c 4 120ah 6 v golf cart batterys and a Renogy 2000 watt inverter/charger The panels are mounted on our 5th wheel wired in parelell. We run everything except the A/C, Microwave, 2 TV's Surround sound ceiling fan. You name it , I've not had any problem like you are having. Oh I forgot I have the MT-50 monitor. You may want to read up about the charging process for your Battery's. If that system is installed correctly, cables are sized right, etc. you should have no problem. My 2000 inverter in the Auto mode uses a little over 1a at idle if I have it in the on position I think it was over 5a at idle. Oh and when we are boondocking I never turn off the inverter, it stays in auto until we get home. Mel
P.S. make sure your charge controller can handle all the extra watts from more panels. my 40a commander will only allow me to add 1 more panel for a max of 500 watts.
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jimmy
Solar Lover
Posts: 52
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Post by jimmy on Jan 6, 2018 15:51:28 GMT -8
If you are looking at the soc on the controller. I believe that is a bogus reading. I have the 60amp mppt commander. The Soc reading is always screwed up. It just cant be. You can check voltage with hydrometer. It should give you an accurate soc reading.
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Post by tattoo on Jan 6, 2018 16:32:14 GMT -8
If you are looking at the soc on the controller. I believe that is a bogus reading. I have the 60amp mppt commander. The Soc reading is always screwed up. It just cant be. You can check voltage with hydrometer. It should give you an accurate soc reading. LOL Damn Jimmy your a fast learner.... LOL
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