corporal_Canada
New Member
2 of those 560 watt panels still better than 4 x 320 watt car sized ones that you saw in my photo, if you cant post a link.. please tell me what i should search for and on what platform ?
few questions about solar power....
- Thread starter corporal_Canada
- Start date
I just searched "Solar panel" in Lazada and filtered the results by jinko brand and got this
corporal_Canada
New Member
okay,, but why does it say produce 595 watts a day ? shouldnt it say every hour ???
im learning to be careful thats all
oh sorry. 3600 watts a day.. divide by 595.. that is roughly 6 . 6 sunlit hours per day..
corporal_Canada
New Member
if i order 2 of those jinko panels instead of 4x 320 panels i am saving 2800 pesos.. thank you big guy....
corporal_Canada
New Member
question for anybody that is still hopeful that i will mak this work.. lets say i buy just 1 of those 590 watt panel.. and i try to use it on my existing equipment.. (IE.. power bank composed of 2x 12v 50ah.. and the mppt) which sais 30amps.. so if the mppt can onlyt handle 360 watts of the 590 watts that the solar panel is dishing out.. will it give my power bank.. 360 watts or am i doing this wrong again ??? will maxing out the mppt damage it or start a july 1 fireworks?
Hedges
I See Electromagnetic Fields!
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A decent MPPT won't care that PV panel can deliver more power or current than it could handle. Just won't draw more than it wants.
Be sure not to connect backwards; if it has a reverse-protection diode, that can only short out limited current.
I haven't seen a 590W panel in person. Between 300 and 400W I'm able to swing around by myself.
I favor two panels in parallel, aimed at the sun for different times of the day. Then you get more hours of full power.
Is "2x 12v 50ah" LiFePO4 or sealed lead-acid?
Lead-acid may want 20A (for 2 in parallel), check specs.
LiFePO4 probably OK up to 50A if 2 in parallel.
(half that current if in series.)
Be sure not to connect backwards; if it has a reverse-protection diode, that can only short out limited current.
I haven't seen a 590W panel in person. Between 300 and 400W I'm able to swing around by myself.
I favor two panels in parallel, aimed at the sun for different times of the day. Then you get more hours of full power.
Is "2x 12v 50ah" LiFePO4 or sealed lead-acid?
Lead-acid may want 20A (for 2 in parallel), check specs.
LiFePO4 probably OK up to 50A if 2 in parallel.
(half that current if in series.)
corporal_Canada
New Member
the 2batteries i believe are AGM although it is written GEL on the side...
assume that the mppt 30A is because of the wire gauge it uses... will the power bank get 360 watts or will i start a fire ?
scroll up to see the 590 watt panel
corporal_Canada
New Member
im just going to start rebuilding my solar setup 1 item at a time.. to begin with, 1 solar panel that claims it can deliver 590 watts.. i want 3 eventually.. and a better mppt and a inverter.. a real one that can handle fridge, pc and a 600 watt AC... .. and i also want 4 or 5x 12v 200ah batteries linked in paralel.. im not super awesome at math that might be 2400 wh x 4... wow... that is exactly what i want
9600 watts available to me once the sun goes away... that should give me enough juice to have the AC on till i get up... this time all solar panels going to the mppt will be identical.. same brand same wattage
i will keep the 2 agm or gell batteries as back up... because you never know.. for the meantime i want to test 1x590 watt panel with my current setup...
i might be doing this wrong.. but i want to pump at least 1500 watts into my future 4 or 5 lifepo batteries... and be consuming 1000 watts at all times.. (AC , pc and fridge).. and left over goes into the 4-5 batteries.... is my math wrong here ?
Hedges
I See Electromagnetic Fields!
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Gel battery
discoverbattery.com
"In this first BULK charging stage, the optimum charge current should be limited to 15% to 20% of the battery's C20 Ah rating. This stage should end when the cell voltage equals 2.35 volts per cell +/-.05 volts at 25°C/77°F."
If your two batteries are wired in parallel for 12V 100 Ah, that would be 15A to 20A max charge rate.
If in series for 24V 50Ah, 7.5A to 10A max charge rate.
Either way, 180w to 240W max charge rate.
Check technical documentation for your battery and follow that.
If you have a charger able to deliver more than 20A (or 10A) and you connect more than 240W of panels, it will charge at excessive rate and shorten life of battery.
Some equipment like an all in one or hybrid inverter may be able to take in 590W of PV, supply loads, but limit battery charging to the desired 10A or 20A. Stand-alone chargers won't do that because they don't know how much of their current goes to a load.
How to charge a GEL battery
The first stage in a 3 or 4-stage CC/CV GELL battery charging algorithm is the “Bulk Stage.” The Bulk Stage is a “Constant Current” (CC) charge but...
discoverbattery.com
"In this first BULK charging stage, the optimum charge current should be limited to 15% to 20% of the battery's C20 Ah rating. This stage should end when the cell voltage equals 2.35 volts per cell +/-.05 volts at 25°C/77°F."
If your two batteries are wired in parallel for 12V 100 Ah, that would be 15A to 20A max charge rate.
If in series for 24V 50Ah, 7.5A to 10A max charge rate.
Either way, 180w to 240W max charge rate.
Check technical documentation for your battery and follow that.
If you have a charger able to deliver more than 20A (or 10A) and you connect more than 240W of panels, it will charge at excessive rate and shorten life of battery.
Some equipment like an all in one or hybrid inverter may be able to take in 590W of PV, supply loads, but limit battery charging to the desired 10A or 20A. Stand-alone chargers won't do that because they don't know how much of their current goes to a load.
Sorry out of the country ATM so haven't been so active .
They're pretty monstrous 50% heavier than a typical 400w I'm pretty sure china just use SEAsia as a testing grounds there's very little difference in price to the smaller panels so your obviously just gonna buy big rather than try look for reviews and if they don't set on fire here on the heat all is good.
@corporal_Canada I have a little 1.6kw Powmr AiO which has a startup mppt voltage of 30v so you could technically run it off a single panel to begin with it was also very cheap less than £200 the only issue I see you might have is the fans are likely too loud for your room.
corporal_Canada
New Member
just wanted to add the 12v lifepo4 battery my guam buddy linked was 10 or 11,000 pesos for only 100ah.. but i found 3.2v.. 50ah.. for only 1000.. 4 of those is less than half price and 2x the ah.. i have a bms, i will ask you guys how to link it and i think this is the smart choice.. your thoughts please
corporal_Canada
New Member
oh, noise isnt an issue, i lost my left ear in Korengal, Afghan.. that is a story for another day..
if your AIO can give me 1000 watts all day long.. i will take it.. solar of course..
dont hesitate to link things, Philippines is all about screenshots and images.. these industreous bastards took the smartphone age and conquered it.. they have my respect
corporal_Canada
New Member
im sorry for reopening the idea of building my own 12v LIFEPO4 battery but it is HALF the cost here... and twice the AH...
corporal_Canada
New Member
installed a wattmeter at 4 minutes to noon i see im receiving 68 to 99 watts
saw it max out at 140watts
saw it max out at 140watts
Last edited:
42OhmsPA
What's in a title?
Are you starting to believe what everyone has been telling you about your current panels?
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