NewStats: 3,265,323 , 8,186,382 topics. Date: Saturday, 14 June 2025 at 12:38 PM e4y58

Peterlove11:

You can go for 8 x 625w jinko s all in series. Attached is the screenshot of specifications

This would give him 452.4v, still above 450v

Penuelseun:
JA Solar 460w is around 11a

Have checked the datasheet n even the 470watt ja solar is 11.53amps ISc n 50.31v at VOC... abeg bro, do u have details of a trusted ja solar dealers

Xanderone:


Hi. Please can I get the link for this "Sako" guys? I want to check it their solar offerings and prices.

I'm hearing of them for the first time though.

oh my, see how product reviews turn ment for SAKO .
It was shared here
https://nairaland.unblockandhide.com/390522/solar-energy-complement-fta/1675#129600884

Xanderone:


I also had issue with one of the packs I helped someone to buy from him. 24v 102ah pack married to 4 pcs 350w monocrystalline via powerMr MPPT CC. It went bad before one year warranty ran out and I immediately notified him to which he was positively disposed to me sending it back for checks. But cos it happened during the peak of the sunny season, the problem only comes up when the sun is down and the battery runs down within 2 hrs on just 213L deep freezer which is the only appliance person uses it for. And since there was no immediate alternative to keep her freezer working while the pack is sent for repairs, she still hung on to it and kept managing it like that. Then came the rainy season the following year, which was already going to two years after purchase, she couldn't manage it anymore. So I had to remove one of my stacks of 24v 50ah lithium stacks and gave her to use pending the time it's sent for repairs. I have 4 stacks of the Lithium (self assembled) which I use so I'm down to 3 stacks at the moment.

September 2023, I called. He said he wasn't on ground in Jos but that he has his technical person on ground there and gave the details of the recipient. I spent 19k to send it to Jos using speedaf express so as to ensure careful handling. After three days, technician called that he'd repaired it and I spent another 11k5 to bring it back, also via speedaf cos I specifically demanded for that method.

After I received it, I was busy for about 1 week so couldn't even check what he did. The second week upon testing it, I was shocked to discover that ńa still exactly the same problem. As if the guy didn't open it up (although the warranty seal was broken sha which suggested it was opened). But walahi, na like say dude just kept it for 3 days and then called me that he'd repaired it without opening it up.

Dejectedly, I just packed it in one corner and hadn't bothered so much since the woman that owned it is doing well without complaints with the stack I gave her from mine. I chatted the Jos guy (not the technician o) up and he indeed expressed concern that the issue persisted and suggested we do the diagnosis together via video chat. But aswear, I never get time to do that since that time. To even carry the battery alone, cos it's heavy, ńa headache for me. So trying to hook it up to any set up for diagnostics is already worrisome for me.

Please note: This is the only battery that had problem out of the many I bought and referred to him. In total over the past three years, I gave him four referrals and I bought two for personal use from him. It's only that one that had problem. So he scored at least 84% assessment from me.

I don't have any issues against him except for his failure to respond to WhatsApp messages. At the time I made my own complaint over 3 weeks ago, he was online but didn't read the messages or maybe he read it but turned off read receipt.

Beyond that, a customer called to complain about your product. The modest thing to do is to follow up but nothing so far.

If getting across to him is proving to be a problem, I can't just blindly send a package to Jos hoping for the best outcome. Imagine your own case. I'll open the battery myself and see if I can get a replacement cell.

Dam5reey:


oh my, see how product reviews turn ment for SAKO .
It was shared here
https://nairaland.unblockandhide.com/390522/solar-energy-complement-fta/1675#129600884

Thanks. I actually later saw the flier when I went back a few pages.

Honestly, the back & forth logistics is frustrating, the money for it, for which I didn't even charge the owner of the battery, plus the stress to haul that heavy pack (back & forth). It's in a metal box. My solace is in d fact dat d stack I gave to her as stop gap is working so well she has no single complain. I suspect she may be unwilling to let go off of it if and when her own pack is restored.

Now I'm beginning to wonder if it isn't Li-ion that is in that stuff cos the metal box looks like the picture of the one op ed. One thing that stands out is that every other pack I'd gotten from him are in plastic case, but only this one was packed in metal case. I'd have opened it a long time ago, but no time, plus I didn't wanna do anything that'll void his warranty on it.

But d way I'm looking at it at the corner where I kept it, I might be tempted to unsheathe the screwdriver one of these days.

durodee:

My experience is quite similar. There was this specific pack that was sent back to Jos THREE times before a cell was changed to resolve the problem. About a year now and no new issue. All the back and forth could be distressing with all the logistic logjam in Nigeria. I have four of his packs in my house now ( 3 bought directly from him and 1 as being prior-owned by a member of this forum)

I have 7 different Lithium packs in use - a Felicity 15kwh, a Pylontech US 3000,a 7.5kwh, 2x6kwh pack, 5kwh and a 3kwh and he built 4 of those packs

durodee:

My experience is quite similar. There was this specific pack that was sent back to Jos THREE times before a cell was changed to resolve the problem. About a year now and no new issue. All the back and forth could be distressing with all the logistic logjam in Nigeria. I have four of his packs in my house now ( 3 bought directly from him and 1 as being prior-owned by a member of this forum)

I have 7 different Lithium packs in use - a Felicity 15kwh, a Pylontech US 3000,a 7.5kwh, 2x6kwh pack, 5kwh and a 3kwh and he built 4 of those packs

Wow 😲 this is huge, would love to see a picture of your power set up.
Are they all connected in parallel?

durodee:

My experience is quite similar. There was this specific pack that was sent back to Jos THREE times before a cell was changed to resolve the problem. About a year now and no new issue. All the back and forth could be distressing with all the logistic logjam in Nigeria. I have four of his packs in my house now ( 3 bought directly from him and 1 as being prior-owned by a member of this forum)

I have 7 different Lithium packs in use - a Felicity 15kwh, a Pylontech US 3000,a 7.5kwh, 2x6kwh pack, 5kwh and a 3kwh and he built 4 of those packs

How do you charge these different battery packs?? Same inverter??

Edrizz:




Have checked the datasheet n even the 470watt ja solar is 11.53amps ISc n 50.31v at VOC... abeg bro, do u have details of a trusted ja solar dealers

Yeah, Techland solar sells them +234 814 502 8446

mctfopt:



The max you can get out of this 580w is 8 in series which is still 4640. Still far from 6000w. I want to go near to 6000w without need for an external charger controller.

You can even do 9x 585w which puts you at about 5300. Like that guy said, you'll not get STC ratings; rather NOCT.
See attached chart and do your maths

Obnoxious2001:

If your inverter is under warranty and you try removing it, you automatically tempered it or make the warranty void

For air filter? I doubt.

Amador1:

If you check my previous posts, you will see the issue I’m having with my battery. I’m still waiting for the from the guy he told me to go drop the battery with but you’re right, WhatsApp messages sent to him gets delivered but he doesn’t respond back to it.

@bolded. Is this how he was before procurement?

ceaser:


I think I'm counting up to around 250 units solar s on that sprawl of building. It may be more. Eachvoanel may not be less than 300w.

I'm helplessly envious. Damn!

See enjoyment...wow. I doubt if this is a battery system. Most likely pure grid tied.

RFQ!!

For our battery couplers in the house. I would like to get from those who are interested in coupling a bespoke lithium battery for a small project.

Information and specs will be shared about it to those interested.

Please enter my DM if interested.

xtremeidea:
Hello Guys, has anyone tried this product from felicity?

Any reviews? Does it work with all products.?

This is not the USB version, it's comes with a serial and RJ45 connector.

No it is not universal if that's what you asked.
Every Vendor has a Unique Module ID on this device that must be recognized by the Communication and Data Board inside the Inverter.
If not, the device will simply get powered up but will not communicate nor give you any data reading from the inverter.

ewizard1:


That bar is a clamp. There are cells under it. Its how most battery designer holds their cells in place.

I see lots of that.

No sir, you are wrong on this one. Except it's a quack, manufacturers will not cross a bar on top of opposite battery terminals carrying high currents. they cross it between the terminals clamping the cells in equal halves. There ought to have been two bars in that pack, one holding each cell rows respectively. And the bars will act as rails for cells cable management. That's how we do it.

xtremeidea:
Hello Guys, has anyone tried this product from felicity?

Any reviews? Does it work with all products.?

This is not the USB version, it's comes with a serial and RJ45 connector.

Sure it works excellently but not sure it is compatible with all products from other OEMs.

You can monitor and control the inverter remotely with it.

One draw back is that the monitoring page takes a few minutes to update so its not real time. But the command control is immediately.

This is the web interface http://www.dessmonitor.com/?#/generalNew/home

The attached picture is a typical day. After battery was 100% the PVs stopped harvesting and dumped the excess into a Lagos lagoon

The second is the web view of my operation today. Grid breaker has been off since yesterday morning that is why battery drained to about 29% and is chargig it back up.

mctfopt:
Does anyone know of a solar up to 450w with 10A or less Isc? Please share the product name.

What should be of concern to you is the system voltage. JUST DON'T EXCEED YOUR SYSTEM MAX VOLATGE Your System can only draw a max of 10A even if you a have 15A total assembly but make sure your MPPT Max Voltage at STC is not exceeded.

Eg.
Say you have 450W 12A @ 37.5V s
And your MPPT spec says: 450V @ 10A,
It's very safe to have 10 of this in series which will give 375V @ 12A STC,
So your MPPT will draw it's 10A complete and the excess will not be of any harm to it.


But in all this, NOTC will reduce these readings for you. At least in Nigeria anyway.

DaniellaDokubo:


Sure it works excellently but not sure it is compatible with all products from other OEMs.

You can monitor and control the inverter remotely with it.

One draw back is that the monitoring page takes a few minutes to update so its not real time. But the command control is immediately.

This is the web interface http://www.dessmonitor.com/?#/generalNew/home

The attached picture is a typical day. After battery was 100% the PVs stopped harvesting and dumped the excess into a Lagos lagoon

Not entirely true sir, It stopped harvesting because your applied load is not drawing the Solar Energy after your battery gets full. Thus is why you have to do a little trick on setup using your [b]Dry s or SmartLoad [/b]if your inverter has it, So that you can power up things like ACs, Fridges, etc once your battery get 100% SOC. by doing so, they draw or harvest the solar energy that your Inverter could have thrown into Lagos Lagoon. but you must not over power your KWp or else they will be steeling your battery energy .

jonescosmos:


Not entirely true sir, It stopped harvesting because your applied load is not drawing the Solar Energy after your battery gets full. Thus is why you have to do a little trick on setup using your [b]Dry s or SmartLoad [/b]if your inverter has it, So that you can power up things like ACs, Fridges, etc once your battery get 100% SOC. by doing so, they draw or harvest the solar energy that your Inverter could have thrown into Lagos Lagoon. but you must not over power your KWp or else they will be steeling your battery energy .

The residual load of 300W is my load when no one is at home it is basically freezer and fridge. Yes my inverter has dry s which I connected to a or that pulls out the freezer if I need to remotely.

I also plan to add my AC next when I have the chance too. For my battery it all depends on the setting I choose. Even if it takes from the battery during cloud cover it restores it back up when sun comes back.

mctfopt:
Does anyone know of a solar up to 450w with 10A or less Isc? Please share the product name.

From experience your s wont get you much of what is on the name plate wattage. I use imported s and my data logger has showed the s could get only a paltry 60% of its designed capacity. This is after observing the production for a period of time on daily basis.

Way forward is to oversize your PV system but not the Voc as that is the only thing that is always higher than the name plate value when it is in use. Don't waste your money on any anything.

Trippledots:


@bolded. Is this how he was before procurement?

, your guess is as good as mine!

DaniellaDokubo:


From experience your s wont get you much of what is on the name plate wattage. I use imported s and my data logger has showed the s could get only a paltry 60% of its designed capacity. This is after observing the production for a period of time on daily basis.

Way forward is to oversize your PV system but not the Voc as that is the only thing that is always higher than the name plate value when it is in use. Don't waste your money on any anything.

Lol, na fake imported you bought, or you don't have correct orientation.. s do way more during peaks.

DaniellaDokubo:


From experience your s wont get you much of what is on the name plate wattage. I use imported s and my data logger has showed the s could get only a paltry 60% of its designed capacity. This is after observing the production for a period of time on daily basis.

Way forward is to oversize your PV system but not the Voc as that is the only thing that is always higher than the name plate value when it is in use. Don't waste your money on any anything.

EXACTLY !!!

jonescosmos:


What should be of concern to you is the system voltage. JUST DON'T EXCEED YOUR SYSTEM MAX VOLATGE Your System can only draw a max of 10A even if you a have 15A total assembly but make sure your MPPT Max Voltage at STC is not exceeded.

Eg.
Say you have 450W 12A @ 37.5V s
And your MPPT spec says: 450V @ 10A,
It's very safe to have 10 of this in series which will give 375V @ 12A STC,
So your MPPT will draw it's 10A complete and the excess will not be of any harm to it.


But in all this, NOTC will reduce these readings for you. At least in Nigeria anyway.

I understand all these, the plan is to put as much PV s as I can per growatt. I'm sort of annoyed I can only do less than 5kw when said inverter can do 6kw.

Growatt has a maximum PV input current of 22A. I'm unhappy I can't run parallel as most s above 400w has Isc more than 11A making parallel impossible. The other alternative is to get lower capacity PVs, the space is very limited.

DaniellaDokubo:


From experience your s wont get you much of what is on the name plate wattage. I use imported s and my data logger has showed the s could get only a paltry 60% of its designed capacity. This is after observing the production for a period of time on daily basis.

Way forward is to oversize your PV system but not the Voc as that is the only thing that is always higher than the name plate value when it is in use. Don't waste your money on any anything.

Sorry, I guess you don't understand my predicament. I wanted to put as much PV as I can possibly can on one Growatt

Isc or Imp? Cause but are totally different.

Edrizz:



Infact, I'm also at the Cross road on this subject matter, though it's already written on the manual that high ISC of the solar will not affect the inverter but my concern is that, why waste energy when I could get a with ISC of 13amps n below... abeg help share a with ISC less than 13amps

What's the max pv power and VOC of the inverter?

mctfopt:


Dang. I'm trying to see how I can wiggle my way out of Growatt's ES5000 22A maximum input current.

jonescosmos:


No sir, you are wrong on this one. Except it's a quack, manufacturers will not cross a bar on top of opposite battery terminals carrying high currents. they cross it between the terminals clamping the cells in equal halves. There ought to have been two bars in that pack, one holding each cell rows respectively. And the bars will act as rails for cells cable management. That's how we do it.

Would share images of cell clamping when I get them.

Ferdiwar:
What's the max pv power and VOC of the inverter?

MPPT range is 120-430v

Maximum PV wattage = 6000w

Maximum PV input current = 22A

mctfopt:



I understand all these, the plan is to put as much PV s as I can per growatt. I'm sort of annoyed I can only do less than 5kw when said inverter can do 6kw.

Growatt has a maximum PV input current of 22A. I'm unhappy I can't run parallel as most s above 400w has Isc more than 11A making parallel impossible. The other alternative is to get lower capacity PVs, the space is very limited.

In the manual, did they work with lower capacity s?

I don't want to assume they never intended you getting near that 6000w in the first instance.

Please I need your input on Deye inverter specs.

Mine is the 5kw with 2 MPPTs, the specs reads;

Max PV input power of 6500w.
PV input voltage 370vdc (125vdc - 500vdc).
PV input current 13Adc + 13Adc.

Now I understand that the input current is 13A for both MPPTs but I don't know if same is the case for the input voltage.

My question is "is the 370v (125v - 500v) for each of the MPPTs or a combined voltage for both MPPTs"?

I want to increase my s wants to know if I can still add to already existing setup or make provision for an external CC.

jonescosmos:


What should be of concern to you is the system voltage. JUST DON'T EXCEED YOUR SYSTEM MAX VOLATGE Your System can only draw a max of 10A even if you a have 15A total assembly but make sure your MPPT Max Voltage at STC is not exceeded.

Eg.
Say you have 450W 12A @ 37.5V s
And your MPPT spec says: 450V @ 10A,
It's very safe to have 10 of this in series which will give 375V @ 12A STC,
So your MPPT will draw it's 10A complete and the excess will not be of any harm to it.


But in all this, NOTC will reduce these readings for you. At least in Nigeria anyway.