₦airaland Forum

jikaseo:
Hello house, I have a 5kva/24v felicity inverter, a 60A PowMr solar charge controller, two Vitra 12v220a tubular batteries and four 300W panels. I noticed that using with from around 11am with my freezer, TV and two fans, the system goes off before 9pm even when I put off the freezer before 4pm. I expected to have at least 18hrs with this setup which is less than 3months old, but I'm disappointed with the results. I intend to add two more 300w panels, please would this help increase how much supply time I get from this system? Any advise will be welcomed.

Tell us the power ratings of the gadgets you power. Whosoever advised you to power up a 5kva inverter with two 220ah battery needs flogging.

You can only power about 300watts (total wattage of the appliances) with those batteries as your inverter will use up about 80watts doing nothing.

My advice is you dispose those batteries and buy new ones atleast 4 batteries then double your panels.

Ideally, you don't need more than a 1.7kva inverter. Plus don't you power bulbs, you need to factor in those things. In renewable energy, you energy supply is limited. Even common phone charger draws about 20watts.

Get a proper energy audit done for proper advice. Those appliances you listed up there may consume about 400w in total and it's alot of power to be drawn from 2 tubular batteries. You will have just about 4 to 5 hours back up after sun down

bereiweris:
Good morning all and a glorious new year. please i would like to get a solar that can power 15bulbs, 3 standing fans , 1 Led TV, 1 laptop and charge atleast 4phones. i would like to go DIY, can someone please recommend the items, nos and brands to get. and if it is going to be possible on a budget of 300k. thank you

NO matter how power efficient your appliances are, 300k ain't going to cut it.

Let's assume the bulbs are 5 watts each that's 75watts

3 standing fans @ 50watts each is 150watts

Led TV 50watts

Phone chargers @ 15 watts each is 60 watts

Laptop charger 90watts

Total + or - 450watts

Lets assume it will run for 5 hours at night. That's 450 x 5 = 2250 watts

You will need over 800k to achieve this. Anyone telling you otherwise is not being truthful

Take note the calculations up there are just based on assumptions. It mignt be less or more it depends on the real wattage of the appliances

All our leaders/representatives, irrespective of tribe are the same

happney65:
You people keep on thinking we having 247 electricity is some kind of rocket science. See,that was the same thing that was said with telecommunications

"Telephone is not for the poor,yada yada". Today even the poorest of the poorest has a phone with the telecommunications sector declaring mad profits year to year.

You see having 247 electricity should be a basic human right. Power going off or customers installing transformers and power lines is archaic living and should be done away with. It is already basic human right in Europe and America and lots of countries in Africa but that of us you make it seem like it is rocket science and claiming people can't pay for it.

Government still holding on to Generation and transmission and a part of distribution when AMCON took over some distribution companies is bullshit. They should hands off everything and see the growth within a couple of years

We need a total unbundling of that sector. Not this fire brigade approach them dey do.

No matter how much they fix for pricing,it cannot be as much as running 247 Generator in your house.

Genuinely privatize the sector and more people will come in and there will be competition in the power sector like it is in the communication sector.

Not this nonesense they are doing

Government should hands off this and hands of that!! Then what's the business of government?

Give it to the yorubas when it comes to telling their leaders the truth.
Just quite unfortunate that a lot of comments on nairaland reeks of tribal sentiments. See the way they make it look like it's only the yoruba that is feeling the heat.

Igbos need to get over the pain of election loss and stop playing the victim card.

nairalanda1:
They have. All of them. Costs of things have gone up.

It is sad, but we are not the masters of our fate here.

I agree there has been significant increase in prices but not enough to trigger 1000% rise in cost of subsidy.

When they are done milking the coffers through this subsidy, they will remove it and introduce paliatives for imaginary people.

Olaide1295:
Privatisation was not properly done.
The TCN which is a major player is still owned by the government and run inefficiently.
The major problem however, is that the market is not allowed to dictate the prices that electricity is traded at.

Stop preaching demand and supply alone. There are so many factors that determines price.

How has deregulation brought down price of diesel or kerosene. Every serious economies that wishes to grow subsidizes important sectors of their economies.

Subisdy isn't a bad thing. The way they go about it in Nigeria should be questioned. Cost don't just jump by over 1000% in 6 to 9 months.

nairalanda1:
Because equipment, salaries, taxes, etc also have to be paid for, as well as improvements. All those cost money.. and all these too have risen in costs.

Again, I am happy that you are concerned about the poor. In my mind, things should be cheaper, but at the end of the day, things cost money. Sad, but it is the fact we have to live with.

Kindly point out any of these cost that has risen by 1000% to justify same increase in the final cost

RepoMan007:
Lies. I don't believe those subsidy increase figures.
Why is the increase coming only after petrol subsidy "disappeared"?

I think they just reallocated the money from some set of thieves to another.

This country can never get better until the masses unite which is almost impossible because of the tribal and religious bigots

nairalanda1:
Basic problem with power supply is simply solved by letting them SET THEIR OWN PRICES.

Like the GSM sector, like the food sector, like the hotel sector...SET THEIR OWN PRICES.

In your mind you think it's there's no price control for TELECOMS

The question you should be asking is how did it jump over 1000% when gas prices did just 200%+

rinzaugustine:
I will I will I will ..7 months don pass and the only thing the incompetent mandate thief had been able to achieve is throw his beloved supporters into bitterness, starvation, mourning, stealing of food stuffs and now prostrating for food…smh..I guess he is teaching igbos politics hahahaha

I really loved your comment but the last sentence is really not necessary and makes you sound silly. We don't really need to tribalize everything.

Everyone, irrespective of tribe, is feeling the heat. Obi wouldn't have made Nigeria better it might have just deteriorated a little slower.

Shey LP senators no carry join share the SUV

Until we stop this stupid division among the masses, Nigeria will never be great.

Braaad:
Thanks for your response sir,

The 5units are lithium. They were to go into the same system but one of it had a defect, the cells inside shifted on their mounting and was shorted to the casing of the batteries.(the dealer acknowledged it was a manufacturing defect for this type of their batteries)
The batteries are rated 9.6kwh on the nameplate -the dealer says it is 10kwh- it is mated to a 18kw inverter and 13.2kw of solar with remote monitoring.




The batteries were bought February this year. And we're integrated in installation by July this year.


All other aspects of the system are working pretty good, just the battery.

I might be wrong, but I don't think anything is wrong with your batteries.

Most of these battery packs are over rated capacity wise. Also, your batteries won't discharge 100%, cable loses etc.

Plus your inverter is a large one, its self consumption will be great especially if it's transformer based. Get a meter to measure the total amps drawn from the battery banks to be sure.

oweniwe:
Why would you buy a USB 3.0 ? That one is super expensive. USB 2.0 with four hubs is 4k but 3.0 with 4 hubs is 5k and more robust in quality, so I opted for 3.0

A USB hub of 10 ports and above should cost anywhere starting from 5,000 naira depending on your state of residence. I haven't seen that one before, even online on konga/jumia, the ones I've seen have 4-5 USB ports. I stay far from state capital so access to tech market is not readily available. Only two shops have USB hubs in the whole town.

how exactly did you end up with a Pure 24-volts inverter, and 1pcs of 12-volts battery ? actually wanted to do a 24v system and tubular due to their advantages. Then subsidy was hurriedly removed & dollar was going up crazily. So I had to think fast with the funds I had on me. So I thought to buy the inverter and a tubular battery and keep first pending when funds come to buy another battery but expected funds didn't come so I was stuck.

I have no regrets on the purchases Sha. The inverter I bought 137k that time now cost 200k. If I had hesitated a while longer, I would not have been able to do anything now cos inflation would have devalued the savings badly.

in your useCase, the inverter's role is to stepDown (reduce) output of the battery. can you imagine? It's annoying suffering in misdt of abundance. The irony and embarrament is much.

get as many devices with USB ports as possible, or buy USB hubs and if you could get hold of at least 20 USBs wether harvested, or in USB hubs, I would put you through on what to do. You might need an electrician (probably an assistant or one who's less busy enough to consider you) to put them together. It's very simple. not a problem, paddy paddy electricians dey. Kindly permit me to enter your DM.

About selling the 24v inverter, I don't know if I will jam money again. If I do na to just buy two small AGM or GEL batteries dey use am for house. Even if I am able to sell it at reasonable price, wetin person wan use 150-180k do in this Tinubu economy? So I say make I keep am.

Thanks so much for your time and responses. I appreciate you mightily

Since it's for a charging station, you could have simply bought those car chargers and connect them directly to the batteries. I use it at home and trust me they are pretty fast.

You didn't plan well. You don't need the inverter. You could have simply bought more panels.

Well nothing spoil. Carry out your feasibility studies you might need to dispose the inverter to get more panels.

isangjohnson:
It's grid tied system Sir. The pv is even 435w 2pcs Jinko. I didn't check well when I mentioned 345w

It should work just fine since there's grid supply to supplement it. The issue is whenever there's prolonged power outage it won't run over night. Plus you didn't state how many hours those gadgets would run after dark. You also need to be specific about the number of bulbs.

isangjohnson:
If you have good installer in Benin, please let me know.
I designed a small 12v 160ah lifepo4 battery with 1.2kva 12v Tbb inverter, 80A Felicity Mppt CC and 2 pcs of 345w Jinko pv to power 120w freezer during the day and 45w LG tv, about 3 ceiling fans of 14w each and few lighting points (energy saving bulbs) at night for my friend.
The guy called two different installers and he was told the system will not power the stated loads.

It will work if grid supply will still be used but won't fly if it's totally off grid.
In order for it to work off grid you need more panels. In real life, those PV won't supply more than 400+ watts on a very bright day.

Please electrical gurus, which should one factor when calculating how much back-up is needed,ie how long the batteries will operate, real power or apperent power of the loads?

You can use lithium batteries with your UPS but you will need a compatible battery charger. Don't charge with the UPS

tetralogyfallot:
Lumos pack Samsung lithium ion cells are now available @ N500 per cell. Only in large quantity pls.

What's your location and share more info abt the batteries such as Condition and capacity

I don't understand why people are celebrating this as an achievement of the government.
Though it's better the naira appreciates but let's not forget, some months ago it was just about 700 naira so why sing praises because it's 950naira.

leketon:
Tested UK Used 32650 Lifepo4 Cells (3.2v 6ah) For DIY LITHIUM BATTERY

Infrared Pir Motion Sensor Automatic Light Switch



Description

This product is a new type of energy-saving motion sensor switch, that provide automated hands-free way to switch light ON/OFF in your homes indoors and outdoors. It saves your electric bill and provides comfort by automically switching ON the light when motion is detected and OFF after approximately thirty (30) seconds.



It can be use to light up entryways, corridors, stairs, hallway, closet, bathrooms, basements, warehouses, garages and other places. Motion Sensor Automatic Light Switch is use to achieve automatic control ON/OFF functions.

It adopts photosensitive control integrate circuit; it will not turn on the light during the daytime or strong light environment.



In addition to the automatic control of lights, it can also be used to control exhaust fans, doorbells or other devices.



Use Case Advantage:
- Say good bye to bumping into stuff in the dark.
- No more forgetting to turn the lights OFF.
- Don't leave lights on needlessly running up electric bill.



Highlights:
- Automatic Induction
- Intelligent Brightness Sensor
- Passive Infrared Technology
- Easy to Install
- Save Electric Bills
- Auto switch ON/OFF
- Wide Applications



Compatibility / Application:
LED lights
Incandescent Bulbs
Fluorescent light
Ceiling lamps
Panel lights
Floodlights
Exhaust Fans
Doorbells



Specifications:
Color: White
Working Voltage: 110-240V 50/60Hz
Item Diameter: 2.5cm
Item Shape: Round
Material: Acrylonitrile Butadiene Styrene
Switch Type: Ifrared Sensor Switch
Operation Mode: Auto Switch ON/OFF
Sensing Distance: 3-6meters
Sensing Angle: 110 Degrees
Time Delay: 30secs approx. (+/-10secs)
Maximum Load: <90watts



Package Includes:
1 x Motion Sensor Detector Light Switch

Why not add price

Why is Naira on a free fall. Forget all this dollar scarcity they are talking about jare. E scarce but they can sell it for that price and e never finish

I don't know why but I actually think it's beautiful. I think the developers shouldn't have filled it with sand instead pile concrete to allow the easy flow of water underneath their properties. Good development jare. Let them be regulated jare.

We have things like this overseas though better constructed. Banana Island Lite

mrvitalis:
So that's about 105% of revenue which leaves in a very bad state

My solution

Nigeria has about 42 million houses... Let's say 60% are in urban areas that leaves 25.2 million houses...

Say each house is valued at an average of 20 million

Implementing a 3% housing tax yearly ( federal government keeps 50% state keep 50% )

This would generate 7.56 trillion yearly for the federal government

Now we have 12 million cars in Nigeria already from stats I get

If we introduce 20k to 500k tax on cars, tricycles and bikes . .. We should be looking at a revenue of 3 trillion... States keep 1.5 federal 1.5 trillion yearly

This two simple system Yeileds 9 trillion yearly plus our current 8 trillion yearly... That's about 17 trillion


If we can restructure our debts... We can reduce debt servicing to 4 trillion... Yes
And wage bill can be reduced to 5 trillion... We have 8 trillion left

If 3 trillion goes to infrastructure 2 to health and education

We can have 3 trillion provided to banks at 3% interest to give to businesses in the import substitutes and exportable business as loans at 10% max

The above would create 5 million jobs in 5 years and increase revenue by over 5 trillion yearly


note this solution is not perfect and is a short version of the whole theory

Do you think there's a building I Nigeria that's not being taxed? What's LAND USE CHARGE for?

All vehicles are being taxed through various means.

You also forgot to account for the cost of collection of these taxes which will gulp about 15 to 25 per cent of the tax collected

Taxation is not the problem. Accountability and judicious use of these generated funds is the bane of the societys growth.

Finally, no country can tax itself into prosperity. Issuance of interest free credit plus the right set of monetary and fiscal policies with SECURITY is the only way out of this mess.

Sofistcatdmoron:
50% dept of discharge is not at 12v , onye ara

What's your stance on this

mank1234:
Sorry sir. You can have.
They are so many technology behind transformerless designs.
Some employ HF transformer, some don't.

The essence of the HF transformer and accompanying circuitry is to get 340Vdc, the bus voltage and not to invert (DC to AC). The inversion is done from 340dc and does not need transformer.

So many circuits design exist for stepping up to 340Vdc without the need for HF transformer.

Oh OK I agree with you on this.

Herdamorlar:
I just got inverter 3000w, charge controller and sunfit battery 100ah from jumia yesterday. Please I need your advice on the sunfit battery (is the battery last or I return it back) and how to connect the power supply to charge the inverter sunfit battery, can I charge it from my main socket or I get installer to connect it through electricity grid in my house?
Anybody that knows how to do this can also explain for me please

You want to connect a 3000w inverter to a 100ah battery. Be ready to replace the battery in 2 weeks except you don't load beyond 100watts

mank1234:
DC to DC converter then inverting as against inverting and then stepping up the AC.
TransformerLESS inverter uses the former.

The later is now done efficiently using toroidal transformer to step up the resulting AC. People still erroneously refer to this as transformerless because the transformer is different from the usual one they are used to.

I disagree with your submission. Both transformer and transformerless inverters use transformers, just different kinds. The transformer based inverters uses low frequency transformers while the transformerless uses high frequency transformers.

You can't have an inverter without a transformer.

CrazyMan:
At this point I believe it's safe to say that the black man cannot effectively manage leadership.

No sub Saharan African nation is progressing. From Nigeria, to Niger, to Congo, Mali, Liberia, Gabon, Burundi... etc, it's the same story. Abject poverty and insane Corruption from their leaders.

Donald Trump was right after all. Africa needs to be recolonized a second time. We obviously cannot progress with this crop of fantastically corrupt leaders, and blind tribalistic followers.

Do you think it's their fault

Go read the book A HISTORY OF CENTRAL BANKING AND THE ENSLAVEMENT OF MANKIND

Despite this sounding like a good idea. I think it's a terrible one. Just train one of the staff of the company on how to handle emergency, preferably the security personnel.

Is fire outbreak the most pressing issue in Nigeria. Look at the cost implications on the organization especially small business and start ups. Imagine employing a staff to do nothing other than to wait for fire emergency. How many buildings dey catch fire.

The government should as a matter of fact stop shifting their responsibilities to the masses. Just employ more fire fighters and build more stations.

Cutezt:
What i meant is that if the batteries are charged, even if it is halfway, i can use it for the entire day, i usually turn it off at night as i dont need light for anything as i sleep, but that's usually very late, maybe 1 or 2am. It takes me from the previous day till the next day, if there is not enough sunlight on that day, it goes to around 23v and i usually turn it off that time. so in summary, if charged anywhere around 25% with Light, then it takes me around 20 hours with 4-5 hours of sunlight.

Not just the wattage but voltage should match, also once you add more panels you will exceed your charge controller max AMPs. I think you will need to get another charge controller

This is what I would recommend, get the 520watts panel with a separate charge controller. Note since your system is 24v and your panel voltage is 41 you will need a mppt charger else you will lose lots of power generated.

Even if you get two more 250w panels you will need another charge controller.

katniss:
You are trying to control your wife.
She’s not a robot and has her desires.
You can only advise and encourage her not compel her to do what you want.

I strongly disagree with your opinion if you term leading controlling then good luck to you.
He understands perfectly well what his family needs and will need in the future.
As a woman if you are not ready to be a follower don't get married.
Note I didn't mean to be treated as a slave. Your input as the wife is vital but the leader takes the decision except where the leader is not capable of taking progressive decisions.
Do you think the OP is doing what he desires or what is necessary to earn enough for his family. Do you think most men love their job and work conditions.
Nobody should do what they want in the family rather what's good for the whole family.