₦airaland Forum

.

How much can solve your immediate problem now? You never can tell, someone might just want to assist you now to offset it.

Please let's revive this

Charley2020:
That's how JUMIA Scammed me. I bought a phone(Huawei Y7 Prime 2019) at 60K. After waiting for 5 days and not receiving a shipping notification I called them only to find out that the item was out of stock, and it was in stock when I ordered. They canceled the order and refunded my money.

The next day I checked and saw the phone on their website, but this time the price had gone up to 76K. I ordered it and it was delivered. After delivery, I checked their website again only to find out that the price had gone down to 60K again.

I called them to complain but they said there was nothing they could do about it. That's how I spent (wasted) an extra 16K for nothing. Jumia is simply the worst shopping site in existence.

Jumia's return policy says-

You can initiate a return up to 7 days after delivery if:
- You receive a wrong, damaged, defective or counterfeit item
- You change your mind, with the exception of Shipped-from-Overseas items, underwear, adult toys, perfumes, cosmetics, hair extensions and jewelry.

Simply return the phone and then get the cheaper version.

Link below is very useful for calculating battery bank capacity, c-rate, run-time, charge and discharge current


https://power-calculation.com/battery-storage-calculator.php

mctfopt:
On the contrary monocrystalline PV panel is more costlier than the polycrystalline type. The technology between the two had so advanced that the line that divides the two are today blurry. But the only difference is that polycrystalline panels tends to perform better under higher temperature while monocrystalline tends to perform more in cooler weather. Also, if space is not an issue, a 300w monocrystalline solar panel is smaller in dimension compared to the polycrystalline.

Thanks boss

dreamwords:
That's what we are saying, u set it charging rate in respect to the battery bank,
Still respect the batterit's ability to withstand the total charge rate, or else the battery will faIL in short period of time, most battery accept c10 , c9, c8,
Supplying 20a to 100ah battery , that is c5 the battery will die in no time,
Hybrid inverter are good in pv and load management, but they also have recommended solar panel ratting written on their body
Mono and poly solar panels,,,
Mono panel of 250w appear to smaller in size when compared to a poly panel of 250w
,so mono seem to be more efficient, but both do the same job

Thanks for the clarification. Links below were also quite helpful

https://deepcyclebatterystore.com/how-to-maintain-batteries/


https://www.youtube.com/watch?v=d6EZuY39K0A

dreamwords:
It's not possible for the charge controller to know the rating of your battery ,wether it's 200ah ,400ah,or 100th system, charge controller supplies constant current (based on it capacity ) and regulated voltage, and3, 4 or 5 stage charging method to the battery, u as an engineer then need to apply the right sizing of panels for your battery,
Even most inverters, sukam ,microtek, luminous, they all have charging current selection at the back ,u select based on ur battery ratings
It will b heart breaking to replace 16 batteries in less than 4 months of installation concidering the cost, due to wrong installation
Some hubris inverters can do the load charge balancing properly,
And also there solar inverters that can work directly from sun

I have attached an extract from the manual of the hybrid Inverter I think I'll get. It shows the Inverter's charge controller can be programmed to deliver a charging current of 10A to 60A to the batteries. The default current to the batteries is 30A regardless of what gets to the charge controller. The excess will be sent to the load.

Also, the 3.2hrs from my previous calculation only applies if I'm using just one 200Ah battery. If using 4 batteries then it should take abt 12-13 hrs to charge from empty.

Do you know much about Mono and Poly Solar panels? All the research I've done shows that Mono is better. I'm just wondering why Poly costs more in the market.

dreamwords:
Charging deep cycle battery in 3 hours is an over Killing, deep cycle battry are not designed to charge that fast, u need to respect the rule of c10 unless u plan to b replacing ur battery every now and then

This was actually my concern with having a high number of solar panels. I also noticed lots of installers recommend four 300/330W solar panels for 5KVA inverters (four 200Ah batteries).

But shouldn't the charge controllers regulate the amount of voltage/current assigned to charging the batteries? If not, current from PHCN should charge batteries from empty to full in less than an hour. I feel there should be a max charge rate from the charge controllers and what's left over should be sent to the Load (at least for hybrid Inverters)

mctfopt:
A friend once bought an inverter that looks like the type sold by iCellpower from PSCSOLARUK in Lagos and inverter had lasted for three years with no issues. However, I've heard great feedback on Felicity inverter on excellent after sales support. There is this annoying feeling that comes when you tried to resolve an issue and get only stories. So, I think it is worth buying from people who may not turn their backs on you as soon as the money hits their account.

Thanks for the info bro

terrymason:
the panels will take 3hours to fully charge the batteries... bring money for the calculation... kidding oh...

Thanks.

Q(Ah)= 200
I(A)= P/V=3000/48= 62.5
T=Q/I= 3.2hrs (assuming 100 percent efficiency)

terrymason:
primusmaximus
To add to it, just imagine the CC is faulty, it means the inverter won't be available to supply power to the client, were as stand alone CC can go for repair while the inverter can be used and nepa power can still charge the batteries...

For the panels my oga mctfopt has said it all .

Thanks. That's a good point raised.

mctfopt:
There is never an overkill when it comes to solar panels, the more the merrier.
It means you'd have no problem getting your batteries to float (charge full) in almost virtually any weather condition. My neighbor uses 16 nos of 300W panels for his 48V inverter system comprising of 24 nos of 2v 500ah batteries. He's still planning to add more panels.

Your neighbor is really vexing lol. Do you know much about 'icellpower' and 'ipowerplus' Inverter brands? They both have Service Centers in Nigeria which I feel is a good thing

mctfopt:
Most people believe a standalone cc is more robust and does a better job compared to the hybrid. That may be a subjective belief as some hybrid are pretty good, like in things of this nature you always get what you pay for. If you pay for premium quality, you'd still get that premium performance. The benefit of having many solar panels is your batteries get to be fully charged faster, and also gets charged on cloudy days. Also, the number of batteries determines how many solar panels you'd require for sufficient charging. E.g. if you install 24 numbers of 12V 200AH batteries, there is no way the size of solar panels will not be more than 20 250W, unless of course, you have a small load that it is catering for, in that case, you do not really need to size that battery bank that large to handle it.

Thanks for the clarification. I'm considering getting 12 250W solar panels for four 12V 200AH batteries (5 KVA Inverter, 48V), is this an overkill?

Nice thread Terrymason. What is your opinion on Hybrid Inverters (inbuilt charge controllers), will you advise against getting them? Also, what are the advantages of having many Solar panels (20+). Thanks

sirelexzy:
floreat

floreat!

This interview is like 5 years old..... And it's her dogs she's referring to as kids.... she has four dogs.

Reverse the order for education and experience....... Most recent should come first and oldest should be last.

benbella:
FLOREAT!!!!!

FLOREAT!!!

Surfboard:
FLOREAT!!!!!!!!!!

FLOREAT!!!

seenter84:
Floreat there for you!

Floreat!

dondo83:
floreat!

Floreat!

King's College School Song

1)."Floreat Collegium" shall our motto be,
Let us shout it boldly, for her sons are we,
Nurtured in her classrooms in our early youth
Where we learn to cherish chilvary and truth
Learn to pull together each one with the rest
Playing up and striving each to do his best

CHORUS:
This shall be our watchword, "Always play the game"
Sound the old school's praises, trumpet forth her fame
Though of many nations we will not forget
That we all are brothers with a common debt
Let us pay by giving, as we forge ahead,
Service to the living, honour to our dead.

2).This is what they teach in the good old school
"Only by obedience may you learn to rule".
If you fail look closely, seek the reason why
You are power to conquer if you only try
Other went before you and attained the light
Where they wait to cheer you, victors in the fight.

CHORUS:
This shall be our watchword ...

3). Present, Past and Future from one mighty whole
Shining forth emblazoned on a muster roll.
When the call is sounded all must answer "HERE"!
Voice and bearing showing neither shame nor fear
Pointing to our honour, which untarnished stands
Bright as when we took it from our founder's hands.

CHORUS:
This shall be our watchword ...

They did same thing to me lol

thatsincerechic:
MORAL OF THE STORY
(WHETHER REAL OR FICTION)

with this story I have shared with you so far..

I am not telling you to open up to people or not to open up when you are in need.

I am not telling you to capitalise on the emotions of people.

I am not telling you to lie or not to lie in order to save your face from shame.

I am not telling you to become an hair stylist. Of course, not everybody is skillful with their hand. Being an entrepreneur encompasses a whole lot and you know what you are good at.

I believe from this story, you have been able to pick out one or two lessons after all in every nonsense, there is a sense.

Never live your life with a negative mindset because you find yourself in difficult situations. There are worse case scenarios and believe me you, you can never tell what's behind the smiles on the faces you come across on a daily basis.

Of course, I have only been able to throw some light on the financial difficulty some students go through, but there are other aspects too. You would be surprised to know the number of students with suicidal thoughts even when they live in luxury

No matter what, I repeat no matter what, suicide should never be an option.

LIKE the saying ,different situations require different measures.
I tell you this day, that no matter what you are going through in life, you should try as much as possible to be in control. Do not let any situation weigh you down or finally tear you apart.

In conclusion, always hold tight to your faith as we all know the saying that a man without faith is a man without hope.
But then again, you know what's Best for you so...


GO FIGURE!






Gracias !

My new favorite Nairalander: thatsincerechic. You will go far in life (whether Real or Fiction)

I think they are trying to stop it from rolling back

BATMAN........ I'll always pick brains over strength, won't be easy though. In fact it will be near impossible but my money is still on the bat

.

James Avery

Sweetguy25:
This guy has the most impressive resume amongst all governor elects. Nice one Akpabio.

I'm Highly impressed.

I was telling someone this exact thing recently, the only governor elect I think can challenge him on paper is Alex Otti (If the people of Abia are smart enough to vote him in). In Nigeria, we need to vote candidates in based on their outstanding qualifications and not petty sentiments.
God bless Akwa-Ibom
God bless Nigeria

I actually believe Akpabio picking Udom is the best thing he's ever done for Akwaibom.

Akpabio was at the pdp rally at Ikono on Tuesday