₦airaland Forum

jonescosmos:
I respect your decision to buy land first, It's very good but don't also forget that the cost materials to develop that land will not wait around the corner till you are ready to develop it. Same goes to Solar and its likes.

Most of us who invested heavily in Solar have already became "Houses Lords" and we thought going solar should be a means of mitigating recurrent subscription based energy expenses.

One thing you should do is try to balance the savings, while you are trying to save to buy/build a house why not go solar now so that the money you would have used to pay for energy expenses will be diverted into the saving for the property of your dream.

...we thought going solar should be a means of mitigating recurrent subscription based energy expenses.

Most readers won't really understand this. Glad you mentioned this. Myself started as a tenant and tell you what, in a shared meter compound, I still paid my share of the bill as part of agreement when I was allowed to mount my solar panels then ELSE wouldn't have been permitted to install them. The compound actually had a block of flats but a portion was 1-room apartments which was where I rented.

Except you don't share meter, most times the compound / landlord wouldn't let you quit paying NEPA bill.

Really, those who MUST go Solar are those who don't share NEPA bill, and have huge monthly energy costs

drizzle0007:
Do you offer warranty?

18 months warranty

drizzle0007:
Do you offer warranty?

Change offer to honor.
Then add under which condition will you or won't you accept claim.

mank1234:
Change offer to honor.
Then add under which condition will you or won't you accept claim.

Barrister..lol

Hi

bassdow:

what do you mean by "portable power battery" ?

"The danger of half-educated people cannot be underestimated. Their incomplete knowledge, false confidence, and lack of critical thinking skills makes them more susceptible to manipulation, misinformation, and propaganda as they cannot discern reliable sources from unreliable ones." - Henry Johnson LR

People are mentioning Lithium, but someone is processing it as portable power battery AKA Powerbank.

Bros make una try, e no easy.

HeavenlyBang:
Why tubular when you can get a Lifepo4 battery that's been tested to perform exactly as specced for just a little bit above that budget.

Please recommend something. Please

bassdow:

what do you mean by "portable power battery" ?

I meant portable power station. Like Eden power products and jackery.

Please guys this is urgent... I've been testing out a 220/12v turbular battery and a 1100/12v volts inverter for my small work space only. The owner is about to collect his set up back.

Can you guys recommend a better option or quality batteries and inverters I can use. Please.

drizzle0007:
Please guys this is urgent... I've been testing out a 220/12v turbular battery and a 1100/12v volts inverter for my small work space only. The owner is about to collect his set up back.

Can you guys recommend a better option or quality batteries and inverters I can use. Please.

Lol...what are the appliances (and their watts rating) of your workspace? And where is your location?

microgiant:
"The danger of half-educated people cannot be underestimated. Their incomplete knowledge, false confidence, and lack of critical thinking skills makes them more susceptible to manipulation, misinformation, and propaganda as they cannot discern reliable sources from unreliable ones." - Henry Johnson LR

People are mentioning Lithium, but someone is processing it as portable power battery AKA Powerbank.

Bros make una try, e no easy.

Abeg me no really understand this comment of yours. You fit help me break am down ?

drizzle0007:
I meant portable power station. Like Eden power products and jackery.

I asked to be sure my guess is as good as what I guessed you meant.

See eh, to best of my knowledge, most All-in-One ain't [always] good enough. As for the brand you mentioned which is Eden, I know nothing about them BUT I am sure you would do yourself much good just buying Inverter + battery + Solar Panel (should in case you want to use the sunLight).

Those portable setups are meant for those whose locations are mobile or unable to contain the main setUp e.g Hostels, small shops, etc BUT for anything serious, and to get value for money, leave them alone.

I intentionally chose not to comment on quality of the batteries. Some people harvest Lithium cells from laptop batteries to use in them

Hello Guys,

Good day..

Our product offerings include, but are not limited to, the following:

JA 580 Mono Solar Panels
5kWh/48V BYD Lithium Batteries
Leoch Lead Carbon 12V 200Ah Batteries
Voltronic Hybrid Inverters-3KW & 5KW
Victron Battery Inverters-3KVA/5KVA/8KVA/10KVA( Multiplus & Quattro brand)
String Inverters-20KW/50KW/60KW/100KW ( Huawei & Goodwe brand)
We believe that these high-quality products would be an excellent fit for your business. We would be thrilled to have you join our list of esteemed dealers and work together to expand the reach of these products.
Please let us know if you are interested in exploring this partnership further. We also sell Perkins, MTU and Gas Generators ranging from 15kva-2500kva.

580w Panels = ₦165,000 EACH
Battery = ₦400k each

Whatsapp or Call: 08033664334

GloryJoyeux:
Hello,

When sizing your system an energy consumption audit is one of the most crucial steps. I can see that you also listed the electrical loads you intend on carrying in a latter post. Although this is different from a comprehensive energy consumption audit, I will work with that figure.

Firstly, you must understand there is always a strong tendency to improve on a solar system after it has been installed so a lot of folks just go big from the get go if they are able to afford it.

A crucial question is: are you sure you really do not ever want to run that air conditioner? I’m asking because it seems like you really want it included, but the truth is, if you want it down the line, you will have to upgrade your system. Now, the ability to upgrade your system down the line is also a major advantage of residential ess, it means you can do what you can afford now and with time get to were you want it to be.

Answering your questions:

I will assumes you are comparing 48v batteries because using a 7.5kw inverter with anything less than 48v batteries system is poor design choice.

Battery size : Two paralleled 200ah battery is 51.2v x 400ah = 20kwh. That is over double the capacity of a single 7.5kwh battery. Both of these can power your air conditioner and other systems mentioned during the day with your 7.5kw inverter. However, at night, if you use the air conditioner with the 7.5kwh battery, you will quickly run out of stored energy. But the 20kwh battery will be more than enough to run your ‘inverter’ air conditioners over night.

By now I’m sure you are understanding the concept? Bigger batteries mean more energy stored for when there is no sunlight, it means longer run time of electrical load and means an extra day or two of autonomy.

Days of Autonomy : this is also a major factor when designing systems. In Nigeria right now we are at the raining season and this means poor solar yield. You therefore need to design a system that can go through at least a day of poor solar yield i.e. a full raining day where your batteries would just add 10 percent charge.

The larger 20kwh battery will enable you to plan 12kwh for the night, and the balance 8kwh for the next night incase there is poor solar yield due to rainfall.

The 7.5kwh battery means you will have to plan 4.5kwh for the night and 3kwh for the next night incase of poor solar yield.

Now, it all depends on energy consumption. Someone might be very okay on 7.5kwh inclusive of days of autonomy, while another will be okay with 20kwh, some have up to 90kwh as home ess.

Solar generation : I see you listed 4 units of 580w solar panels. This is 4 x 580w =2,320 W. Now, you must understand that you will hardly get a sustained 2,320w of solar yield. Always aim for 90 percent solar yield which is 0.9 x 2320w =2,088 W. Now you must consider inefficiencies when converting current and voltage to charge the batteries. Expensive inverters and solar charge controllers like those made by victron offer way higher conversion efficiency. But, most cheaper inverters we use offer poor efficiency. So let’s go with 85 percent conversion efficiency. We have 0.85 x 2088w=1,774.8 W. Since you battery is 51.2v, it will charge at average of 53v so we have, 1,774.8w / 53v = 33.4 amps.

Take note of the figure 33.4 amps. If you go with the 7.5kwh battery which is 150ah. It will take up to 150ah / 33.4amps = 4.5hrs sunlight to charge. Now notice if you go with the 20kwh battery which is 400ah it will take up to 400ah / 33.4amps = 12hrs sunlight to charge

This above is only accurate if you are not running a single day time load. Once you are running a load during the day eg your freezer is turned on. Then, your 1,774.8w from solar panel will need to power those loads first, before sending the balance to the battery, meaning you will be looking at 27amps or even just 25amps charging current.

Now, not all sunlight is equal. Just because it’s daytime doesn’t mean you will be generating such high sustained figures. For a fact, you can only expect such sustained performance all day only during the dry season in the south, except you are living up north in Nigeria.

We can therefore conclude that your solar panel is completely underpowered.

How to size your solar panels : I will give you my personal calculation that works for me always. If you are resident in the south of Nigeria, size your panels to fully charge your batteries with just 1.8hrs of sunlight i.e 1hr 48mins of sustained peak solar pv should charge your battery to full. If you are in the North use 2.5hrs of sunlight for your calculation.

This means that, to size your panels divide your total battery capacity by 1.8 if you live in the south and 2.5 if you live in the north. So 20kwh battery / 1.8 = 11,000w total panels and 7.5kwh battery / 1.8 = 4,160w total panels.

I can assure you, if you size your panels this way and factor in days of autonomy for battery size. Come rain come sun, out of 365 days a year, you will always get full charge for a minimum of 340 days. The remaining less than 25days which translates to 4 times a month in the rainy season, you can expect minimum of 50 percent charge.

Regarding questions 2 and 3. Do not buy from some alaba marketers, to be safe just go straight to their official distributors and buy from them. I have seen situations where they print new stickers with higher capacity and paste on their batteries to deceive unsuspecting customers. Do you research and ensure you purchase from the right source or you will not get value for your money. For the inverter part, you can maybe google search the name of the inverter and add words like ‘repair’ , ‘fault’ , ‘common issues’, ‘problems’ and see if you can find any known issues documented online. This is a neat trick for researching any electrical device you intend to buy.

*sorry for any typos, I didn’t proofread this.

That's a very comprehensive answer. Thank you!

odimbannamdi:
Lol...what are the appliances (and their watts rating) of your workspace? And where is your location?

1 45w laptop
1 50w monitor.
Charging phones and mifi.

Total watts I need is not up to 300.
What I'm really concerned about is battery life.

I need something that I can use for two days or more (8hrs)on a single charge.

bassdow:
I asked to be sure my guess is as good as what I guessed you meant.

See eh, to best of my knowledge, most All-in-One ain't [always] good enough. As for the brand you mentioned which is Eden, I know nothing about them BUT I am sure you would do yourself much good just buying Inverter + battery + Solar Panel (should in case you want to use the sunLight).

Those portable setups are meant for those whose locations are mobile or unable to contain the main setUp e.g Hostels, small shops, etc BUT for anything serious, and to get value for money, leave them alone.

I intentionally chose not to comment on quality of the batteries. Some people harvest Lithium cells from laptop batteries to use in them

When you say battery what type do you mean?

drizzle0007:
1 45w laptop
1 50w monitor.
Charging phones and mifi.

Total watts I need is not up to 300.
What I'm really concerned about is battery life.

I need something that I can use for two days or more (8hrs)on a single charge.

300w X 8 X 2 = 4.8kwh

Accounting for losses and all, you'd need a 5.12kwh battery.

They generally go for about 1.1m.

drizzle0007:
When you say battery what type do you mean?

Any type you intends using

Latest review of our 3000w EAsun pure sine wave inverter.

3rd recurring purchase from the customer within the last 2months+. He acknowledges how energy-efficient the inverter is. I was a little surprised to hear him say it powers the 1hp pumping machine of his customer. I have asked him for video or i dont believe it... . As always, i advised that such loads should be powered at peak sunlight to avoid pulling soo much juice from the battery.

Still looking for a budget and durable inverter that does the job well and carries significant load compared to its size? Consider the 3000w Easun pure sinewave inverter. We also have parts available in case of repairs, and we have achieved a 100% repair rate of the inverter

Price: 100,000

drizzle0007:
1 45w laptop
1 50w monitor.
Charging phones and mifi.

Total watts I need is not up to 300.
What I'm really concerned about is battery life.

I need something that I can use for two days or more (8hrs)on a single charge.

How did you go from 90w (the wattage of your laptop and monitor) to 300w for just your work space?

Also, how do you intend to charge the batteries? Grid (nepa or gen) or solar?

Available


Bestcom solar panels !


700w ..... 189,000
590w ..... 156,000
480w ..... 140,000
420w ..... 120,000
320w ..... 100,000
180w ..... 60,000

Order can be dispatched from Lagos to any state at buyers expense .

O8O35O31951

HeavenlyBang:
300w X 8 X 2 = 4.8kwh

Accounting for losses and all, you'd need a 5.12kwh battery.

They generally go for about 1.1m.

just to charge laptop and on monitor?

Iinnov8:
How did you go from 90w (the wattage of your laptop and monitor) to 300w for just your work space?

Also, how do you intend to charge the batteries? Grid (nepa or gen) or solar?

I believe 150 watts is enough for him

drizzle0007:
1 45w laptop
1 50w monitor.
Charging phones and mifi.

Total watts I need is not up to 300.
What I'm really concerned about is battery life.

I need something that I can use for two days or more (8hrs)on a single charge.

If money na issue. Go and buy 100ah battery, psw sachet inverter 1kva, 10amps battery charger. This should keep your work station on for 8hrs. If you want to spice it up, buy 180watts solar panel and small charge controller. You are good.. All these marketers here just want to sell their products.

Gshems:
just to charge laptop and on monitor?

He said 300w for 16 hours. It is what it is.

Iinnov8:
How did you go from 90w (the wattage of your laptop and monitor) to 300w for just your work space?

Also, how do you intend to charge the batteries? Grid (nepa or gen) or solar?

300 is like highest estimate. I probably won't get up to 200 on a normal day.

I intended to charge with NEPA mostly

The most power I've gotten from a 1.74kw array so far. 93%. Considering temperature, perfectly in line with what Jinko rates the panels at.

Point is, you can't go wrong with Jinko panels.

GloryJoyeux:
Hello,

When sizing your system an energy consumption audit is one of the most crucial steps. I can see that you also listed the electrical loads you intend on carrying in a latter post. Although this is different from a comprehensive energy consumption audit, I will work with that figure.

Firstly, you must understand there is always a strong tendency to improve on a solar system after it has been installed so a lot of folks just go big from the get go if they are able to afford it.

A crucial question is: are you sure you really do not ever want to run that air conditioner? I’m asking because it seems like you really want it included, but the truth is, if you want it down the line, you will have to upgrade your system. Now, the ability to upgrade your system down the line is also a major advantage of residential ess, it means you can do what you can afford now and with time get to were you want it to be.

Answering your questions:

I will assumes you are comparing 48v batteries because using a 7.5kw inverter with anything less than 48v batteries system is poor design choice.

Battery size : Two paralleled 200ah battery is 51.2v x 400ah = 20kwh. That is over double the capacity of a single 7.5kwh battery. Both of these can power your air conditioner and other systems mentioned during the day with your 7.5kw inverter. However, at night, if you use the air conditioner with the 7.5kwh battery, you will quickly run out of stored energy. But the 20kwh battery will be more than enough to run your ‘inverter’ air conditioners over night.

By now I’m sure you are understanding the concept? Bigger batteries mean more energy stored for when there is no sunlight, it means longer run time of electrical load and means an extra day or two of autonomy.

Days of Autonomy : this is also a major factor when designing systems. In Nigeria right now we are at the raining season and this means poor solar yield. You therefore need to design a system that can go through at least a day of poor solar yield i.e. a full raining day where your batteries would just add 10 percent charge.

The larger 20kwh battery will enable you to plan 12kwh for the night, and the balance 8kwh for the next night incase there is poor solar yield due to rainfall.

The 7.5kwh battery means you will have to plan 4.5kwh for the night and 3kwh for the next night incase of poor solar yield.

Now, it all depends on energy consumption. Someone might be very okay on 7.5kwh inclusive of days of autonomy, while another will be okay with 20kwh, some have up to 90kwh as home ess.

Solar generation : I see you listed 4 units of 580w solar panels. This is 4 x 580w =2,320 W. Now, you must understand that you will hardly get a sustained 2,320w of solar yield. Always aim for 90 percent solar yield which is 0.9 x 2320w =2,088 W. Now you must consider inefficiencies when converting current and voltage to charge the batteries. Expensive inverters and solar charge controllers like those made by victron offer way higher conversion efficiency. But, most cheaper inverters we use offer poor efficiency. So let’s go with 85 percent conversion efficiency. We have 0.85 x 2088w=1,774.8 W. Since you battery is 51.2v, it will charge at average of 53v so we have, 1,774.8w / 53v = 33.4 amps.

Take note of the figure 33.4 amps. If you go with the 7.5kwh battery which is 150ah. It will take up to 150ah / 33.4amps = 4.5hrs sunlight to charge. Now notice if you go with the 20kwh battery which is 400ah it will take up to 400ah / 33.4amps = 12hrs sunlight to charge

This above is only accurate if you are not running a single day time load. Once you are running a load during the day eg your freezer is turned on. Then, your 1,774.8w from solar panel will need to power those loads first, before sending the balance to the battery, meaning you will be looking at 27amps or even just 25amps charging current.

Now, not all sunlight is equal. Just because it’s daytime doesn’t mean you will be generating such high sustained figures. For a fact, you can only expect such sustained performance all day only during the dry season in the south, except you are living up north in Nigeria.

We can therefore conclude that your solar panel is completely underpowered.

How to size your solar panels : I will give you my personal calculation that works for me always. If you are resident in the south of Nigeria, size your panels to fully charge your batteries with just 1.8hrs of sunlight i.e 1hr 48mins of sustained peak solar pv should charge your battery to full. If you are in the North use 2.5hrs of sunlight for your calculation.

This means that, to size your panels divide your total battery capacity by 1.8 if you live in the south and 2.5 if you live in the north. So 20kwh battery / 1.8 = 11,000w total panels and 7.5kwh battery / 1.8 = 4,160w total panels.

I can assure you, if you size your panels this way and factor in days of autonomy for battery size. Come rain come sun, out of 365 days a year, you will always get full charge for a minimum of 340 days. The remaining less than 25days which translates to 4 times a month in the rainy season, you can expect minimum of 50 percent charge.

Regarding questions 2 and 3. Do not buy from some alaba marketers, to be safe just go straight to their official distributors and buy from them. I have seen situations where they print new stickers with higher capacity and paste on their batteries to deceive unsuspecting customers. Do you research and ensure you purchase from the right source or you will not get value for your money. For the inverter part, you can maybe google search the name of the inverter and add words like ‘repair’ , ‘fault’ , ‘common issues’, ‘problems’ and see if you can find any known issues documented online. This is a neat trick for researching any electrical device you intend to buy.

*sorry for any typos, I didn’t proofread this.

Crash course on solar sizing. Good job.

GloryJoyeux:
The advantage of my properly sized ess. It has been raining since morning, however the rain has just stopped for an hour but you can see that in that 1 hour of less than ideal solar irradiation, the inverter has been able to store 100ah into the battery. Now, surely the rain will continue in the next hour or two, but between now and that time, I would have a full charge. This is despite 5 days straight of daily rainfall, I still get 100 percent charge within the very few windows of sunshine when the rain stops then continues.

The other thing is to make sure you always use quality panels, you can see my jinko PV1 is producing 5,156w out of a rated 5,280w. PV2 is also producing similar and all these is with the heavy loads in the house turned on.

This your coloumbmetre de enter my eyes. But rx don make am cost like kilode.

Ithream:
Very true. I totally agree. I can’t regret my decision cos my money is invested. I just hope I can raise another money to get an inverter system soonest b4 the prices gets worse off.

Thanks for the advice though 🙏

But then one investment doesn't directly impact your present quality of life, which IMO should take priority over another that simply seeks to hedge against loss of value of funds.

I had a full solar installation done before I even bought a car. Why spend millions on an equipment that depreciates, I don't sleep in, and I can have other options if the need arises instead of something that actually helps me sleep better, work more effectively, and benefits everyone in the house always.

To me, i'ld rather be a solarlord first before a landlord anyday.

You are officially invited to our stand!