₦airaland Forum

Penuelseun:
24v is still your best bet if you want your system to be efficient, if you are worried about price, you can buy 100ah ×2 batteries, just make sure you power your refrigerator during sun hours with an oversized array

solasola:
I would not recommend the above for client installation except diy. and as you mentioned, dry season is a factor. but you might still be able to draw conclusions on your peak current on a really sunny day around 12:30pm to 1:30pm, you get peak current and can factor that in your calculations.

As per your rechargeable fan. lead- acid batteries are called that name because they contain h2so4 electrolyte which is a liquid.so conventionally upside down or sideways is never encouraged. if you change the follow come battery of your fan with the higher ah but same volt(12), not problem should ensue as you will only have to charge for a longer time.

for charging your almost dead battery alongside your working OK batteries, you would eventually kill your new batteries as the older one will try to drop them down to its level. you know solar power is like a sinusoidal wave atimes. I even doubt that your current system charges your batteries effectively. but except you will use a separate PV array and cc for old battery, you should be OK with that.

solasola:
like said earlier, 4 150w should harvest 8x4=32A at peak. but mine never does, just little above 20A at most at peak sunlight.hence I am getting 5A per PV considering distance from PV to my cc. hence adding 2 more panels should work in my case. so with 8 150 panels, i would have little above 30 amps at peak sun array. just saying.

solasola:
like said earlier, 4 150w should harvest 8x4=32A at peak. but mine never does, just little above 20A at most at peak sunlight.hence I am getting 5A per PV considering distance from PV to my cc. hence adding 2 more panels should work in my case. so with 8 150 panels, i would have little above 30 amps at peak sun array. just saying.

solasola:
well I concur. those are values for under ideal situations

earthrealm:
412WH IS super poor in this sunny season, you should be getting upto 1600wh to 2500wh daily.
12v setups are usually low budget, and usually doesnt interest most installers...unless they are very close to you, this is mainly cos of low installation/logistics fees.
were you the person complaining of shading of panels?
whats the size of cables from panel to cc, then cc to battery??
then your cc is another are...whats the max instantenous harvest in WH, you have seen?

mixing poly and mono isnt a death sentence, you can still get something useful from it. what is the Voc and Vmp of the mono and poly panels??

godspeed:
Please enlighten me more on this

solasola:
l use the exact pwm cc u have. from what I see, it records just PV Ah input only. I have 4 12v/150w panel in parallel. I use my system for 24hrs. I mean inverter for 13hrs for charging business and run off Dc loads through the night. my 2 100ah in parallel never drops below 50%dod. my harvest has not been impressive though. I get a least above 50ah on less sunny days and abt 150Ah on very sunny days. Ideally, that for me is too low. I would be adding at least two more panels asap.

godspeed:
Please enlighten me more on this

godspeed:
Imo, I tire ooooo.

The max I've ever gotten was 85 ah in a day.

I just don't know what's wrong with my set up.

Have u ever harvested above 200ah in a day?

godspeed:
Imo, I tire ooooo.

The max I've ever gotten was 85 ah in a day.

I just don't know what's wrong with my set up.

Have u ever harvested above 200ah in a day?

sinceraconcept:
Anything immorality,you would never see a Muslim name but a Christian name instead. 99% of porn stars are Christians,slay queens,skimpy dress wearers,girls that brag about their sexual skills online,girls that promote premarital sex, really bad ass actresses like Cossy Orjiakor, Iyabo Ojo,Gifty,Mide Martins etc are Christians. Pastors are also raping and having consensual sex with church girls
Our Christian brothers should be more strict with their laws and not let these people ruin their beautiful religion

tchijioke:
Thanks for the technical support.
With this configuration the output should be 48v 15.33amps...its within the controllers range... My other concern is that the controllers max watt for a 12v bank is 550watt, won't it be an issue since that is the only parameter that seems out of place. Thanks

earthrealm:
Yeah, exactly!
You would hit over 25amps on a good day, if your panels are optimally placed and you are using correct cable size as per distance

Topmost11:
"you would have 2 strings each made up of 2 strings in parallel, which you then parallel"

Is this what you mean?

dragnet:

kiekie1:
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SolnergyPower:
1. Solar charge controllers operate in a range to voltage to charge batteries. That's why the current produced at different times during the day from the panels is not even. Most PWM solar charge controllers rated 12/24V can take up to 50V from the solar panels.

2. You can connect two panels of that your 17.5V in series to your CC and it'll still work very fine.

mctfopt:
The PV Vmp is 17.5v, you are good to go. Most PWM can take up to Vmp of 24v for a 12v battery system. The PV opencircuit voltage does not necessarily have to match 12v or 24v for either of the two.

SolnergyPower:
You can connect two or more panels together to charge your battery or batteries via the charge controller.

You'll need to consider factors like:

a. Solar panels specifications
b. Specifications of your charge controller
c. Inverter size
d. Battery bank size
e. Load
f. Weather

Etc.