Penuelseun:
it is not a gel battery, it is a sla battery, I set the bulk voltage to 14.7v and float voltage to 13.8v but I have never seen it enter float, the cc just cuts off the voltage when it stays for a while on 14.7v, it still reads 12.4v after a full charge

mctfopt:



MakeSkyBlue, then it used to sell for $180

olaolu11:




Could you also go through my setup, pls.

4*150watts stand alone 12v panels in parallel; 60a pwm cc from aliexpress; distance of panel to cc(lateral+horizontal)78 ft; battery to cc(less than 3ft). Wires used are join-join ac pumping wire scrimped from somewhere. Inverter is luminuos 900vac ecovolt 12v inverter. Battery was 100ah luminous i've used for almost 4 years with public grid/gen b4 switching to solar/public grid/gen. Used it for few weeks until recently when it will work until sundown and battery then lasts 1.5hrs after sundown. I've been too wire is culprit and wire was changed today. So by tomorrow I will update. I changed wires to 10awg dual core wire. And cc to battery wire now 6awg (lenght,6+ft). Need I say that everything is DIY from info gathered from quora, nairaland, researches and YouTube videos.


I gather I need fuse/dc breaker between panel and cc, and bewween cc and battery. Will standard 240v 5a ac fuse suffice? And what parameters am I to set on the cc?. I read there are monitors selling to check battery discharge level etc. What name and brand as well as seller and if possible idea of price. And money is an issue o. My salary is less than 100k/month, so don't give me the one wey I go first join cooperative collect loan b4 I go buy o(lol). Thanks.

ojeysky:


With that setup, you can only connect in parallel (since a typical 300v panel is 24v) and at least east panel should give 8A or more, this means you can only do max 300x2 with that controller configuration.

Trippledots:


iv always thought about getting a mini dsp projector. some are the form factor and almost same size as a phablet....they charge and run off a regular usb plug. but i dnt have the time nor reources for now for that adventure. that said, this ur dc tv. where did u get it from pls? name too.

lexi28:
guys, I have 2pcs of 12v/200ah Top light
batteries neatly used for sale. price is 30k.
reason: recent upgrade.
thanks.

Penuelseun:
it is not a gel battery, it is a sla battery, I set the bulk voltage to 14.7v and float voltage to 13.8v but I have never seen it enter float, the cc just cuts off the voltage when it stays for a while on 14.7v, it still reads 12.4v after a full charge

durumibaka:


Thanks bros for that answer, but am corrently using 300w/24v×3 solar panel, what will be the effect since am using 20a 12v/24v solar charge controller. Thanks.

BetaTechnicians:

Na una contribute to their company

ojeysky:



From my little DIY experience, It depends on the max VOC of your CC if it's up to 100v or more then I guess you will have your panels in series so amps is maintained but voltage will increase

ojtech8291:
I have faced this kind thing before. Assuming he combines them in series and VOC of the cc is 100v but the inverter input voltage is 24v. Is it not going to affect the inverter? I will expect he goes for higher cc of 40A or 50A. Thank you.

Namzy:

I don't understand. But wait why do people keep using the old format of 'this is a 12v or 24v solar panel?' I think 300w x 3 connected in series will definitely be more than 100 voc , I might be wrong though. My 340w from jinko and Era solar has a voc of about 47v @stc. Meanwhile I think the problem with the 20a charge controller is the max watts power allowed on said controller. I'm sure it'll be less than 900w

ojtech8291:
I have faced this kind thing before. Assuming he combines them in series and VOC of the cc is 100v but the inverter input voltage is 24v. Is it not going to affect the inverter? I will expect he goes for higher cc of 40A or 50A. Thank you.

NiyiOmoIyunade:
Imagine that there are two loooong wires going from PV array to CC - one is the positive PV cable and the other is the negative PV cable.

You want your SPD to sit 'in line' with these two PV cables that go to the CC - you want your SPD to 'plug into' the circuit made between PV and CC *without breaking the connection* and monitor it for voltage surges - if SPD senses an incoming voltage above its set threshold on either positive or negative PV to CC cable, it immediately shorts that terminal that has higher than desired voltage to its (SPD's) ground terminal so that the surge voltage is primarily diverted to ground and does not make it to the CC. This is roughly the operating principle.

See very rough diagram below - bus bars are the best method to bring mulltiple cables together but you can use whatever technique makes for a solid mechanical and electrical connection

ojeysky:
Bros so I have done the setup; could not get a bus bar for now so I used the DC breaker as the common connection point for both the SPD and PV. However I have noticed that it seem the battery consumption has increased, does the SPD and DC breakers consume power on their own?

Update nevermind the source of drain identified - it's self inflicted.

Secondly, I have moved my stuff to standalone, I was happy to see over 1kw yday at relatively high sunlight. However when it rained and after sunlight came back I lost generation, noting was coming in, I noticed water was still on the panels could that be the reason why I was not generating anything?

ojeysky:
Bros so I have done the setup; could not get a bus bar for now so I used the DC breaker as the common connection point for both the SPD and PV. However I have noticed that it seem the battery consumption has increased, does the SPD and DC breakers consume power on their own?

Update nevermind the source of drain identified - it's self inflicted.

Secondly, I have moved my stuff to standalone, I was happy to see over 1kw yday at relatively high sunlight. However when it rained and after sunlight came back I lost generation, noting was coming in, I noticed water was still on the panels could that be the reason why I was not generating anything?

Oshomo12:


I wonder how u can get 12a from that panel on a pwm CC for a 12v system, using that 260 w panel @ ~31v?

Can I see d pic of d Cc? Get mppt CC, u re using a wrong CC for ur system. Or get two 12v panels of 150/160 w each and connect them in parallel.

Mod.,
U need around 500 w solar panel for a 200ah 12v battery. Or else, ur battery may have issue (s) around this period (july~mid September).

BetaTechnicians:


This your outline na wa, you really need to clean up your connection, I don't even know where to start.

mank1234:


Not necessarily. The wattage of a panel is dependent on current and voltage which jn turn depends on arrangement of the cells (number of cells in parallel and series) and cell characteristics.

So for same 340W, you may get btw 30 to 50VoC or even more depending on the manufacturer.

earthrealm:


hmmmm, bros are you sure about this., hope you have an idea, how panel Voc, wattage and current is calcuated by the manufacturer power - watts - volt x current, the max current i have seen from a panel is less than 10amps, cos of this constraint, based on current laws of physics, there is no way a 340w, heck even a 300w panel will have a Voc of 30v, minimum should be as from 38v or so

ojeysky:
Bros so I have done the setup; could not get a bus bar for now so I used the DC breaker as the common connection point for both the SPD and PV. However I have noticed that it seem the battery consumption has increased, does the SPD and DC breakers consume power on their own?

Update nevermind the source of drain identified - it's self inflicted.

Secondly, I have moved my stuff to standalone, I was happy to see over 1kw yday at relatively high sunlight. However when it rained and after sunlight came back I lost generation, noting was coming in, I noticed water was still on the panels could that be the reason why I was not generating anything?

olaolu11:
3 panels of 150watts each connected in parallel with 10awg dualcore cable to 60a pwm cc and 200ah battery. Distance from panel to battery is 25m. Juicecoming as measured on cc is 6.5. How come?

mank1234:

Nothing to fear. It's GK and MK (axpert) bug. Some people have complained of loosing generation just after cloud shading. Probably, a future firmware upgrade may solve it.

If you put OFF inverter and ON it again it will start working normally. Or after a little while it will pick up on its own. Otherwise by next morning it will work normally.

Follow this topic and other ones on this forum:
https://forums.aeva.asn.au/viewtopic.php?f=64&t=5955

mctfopt:


Water on the panel can not totally stop generation of power. I'm afraid the standalone system being that close to the building may experience some shadows from it. Check if your connection is ok. I'd suggest you give the solar panels some slight tilt, so that water can run off the panels when it rains. Even if it's 5 degree tilt from the horizontal.

ojeysky:


I made sure to avoid shadows, I will try to tilt to the extent feasible. Thanks

ojtech8291:
I have faced this kind thing before. Assuming he combines them in series and VOC of the cc is 100v but the inverter input voltage is 24v. Is it not going to affect the inverter? I will expect he goes for higher cc of 40A or 50A. Thank you.

olaolu11:
3 panels of 150watts each connected in parallel with 10awg dualcore cable to 60a pwm cc and 200ah battery. Distance from panel to battery is 25m. Juicecoming as measured on cc is 6.5. How come?

Namzy:

Hisense fc260sh about 200l power consumption 67-70watts price about 75k give or take thank me later

mctfopt:



I don't think Powr is original neither is it fake. These guys just APPROACH manufacturers who makes controllers to them. They just slap their name on it. So it's just some little difference between the two. So buy whichever one you fancy, probably, the cheaper of the two.