SoftHeart:
Greetings all,
I needed a solar inverter..., so after discussing with the seller, he recommends that 2.5kva would be best for the workload.

I'm a complete novice, so I want to be sure that I'm getting the best.

The seller gave me the system specs as follows; 2.5 kva, 2 batteries (200Ah), and 2 solar panels.
I was thinking that the solar panels should be more than 2. Is that correct?

Also, please what relevant questions should I ask the seller before making payment to be sure that I'm getting the best?

Thanks in anticipation for your help.
God bless!

Your load determines The number of panels likewise batteries for night-time use. Your panels should be able to serve your load and store enough power into the batteries for night time use.
You can call or chat us for proper load estimate and quote.

Call - 08117398294
Chat - http:///2348117398294

ojeysky:


It all depends on your load and what's the capacity of the panels?

Thanks for your response.
I will ask him about the capacity of the panels.

The house is 4 bedrooms with home office, we have the following (possible) loads;
3 laptops, 1 LaserJet printer, 1 refrigerator (not deep freezer), 2 standing fans, 2 TV and decoder sets, 1 submersible pump, about 10 bulbs or so.
I don't actually know the actual power needed for each of the loads, but I'm not particularly interested in powering all of them with an inverter.

So Sir, do you think the recommended system is ok?

SoftHeart:


Thanks for your response.
I will ask him about the capacity of the panels.

The house is 4 bedrooms with home office, we have the following (possible) loads;
3 laptops, 1 LaserJet printer, 1 refrigerator (not deep freezer), 2 standing fans, 2 TV and decoder sets, 1 submersible pump, about 10 bulbs or so.
I don't actually know the actual power needed for each of the loads, but I'm not particularly interested in powering all of them with an inverter.

So Sir, do you think the recommended system is ok?

Ah! This one na power house o it's certainly inadequate, you will need a budget of 6 digits to achieve this and 1 will not be the first number sef. So what was recommended to you is grossly inadequate. However if that is your budget then ditch the following:
Refrigerator, freezer and pump.

zeestone99:


Your load determines The number of panels likewise batteries for night-time use. Your panels should be able to serve your load and store enough power into the batteries for night time use.
You can call or chat us for proper load estimate and quote.

Call - 08117398294
Chat - http:///2348117398294

All right.
Thanks Sir

ojeysky:


Ah! This one na power house o it's certainly inadequate, you will need a budget of 6 digits to achieve this and 1 will not be the first number sef. So what was recommended to you is grossly inadequate. However if that is your budget then ditch the following:
Refrigerator, freezer and pump.

Thanks for your prompt response Sir.

Yes, the critical devices are the laptops, printer, TVs and bulbs. We can use generator for the others.

So with that, do you think the recommended system is ok?

Just curious, at the bolded, do you mean the budget be 6 or 7 digits?
Because the quotes I'm getting is already of 6 digits...

80a Fangpusun 150k
60a Fangpusun 125k
3.5kw/48v XTM 460k
5.5kw/48 XTH 930K

080-987-337-09

JUO:
100ah/12v lithium battery available
Maximum charge current 50A
Maximum discharge current 50A
Maximum charge voltage 14.8v
low voltage disconnect 10v
Series connection: yes
Parallel connection: yes
over 3000 on cycle at 80% DOD
Weight 13kg
Cell: 32650
Price 170k
080-987-337-09

Discount for bulk orders

ojeysky:
Someone expressed interest in my current 200AH LFP bank some time ago but I can't seem to find the post. It should be available from next week for 400k pere, you can reach me on whatsApp.
Current status:

1. 16 by 105 cells

2. It's deepest discharge I have done is 170AH

3. Its currently at about 150cycles or less. From the picture you will see 85cycles but I installed the BMV about 3months of usage.

4. Procured early this year, around Feb/march.

5. It has a reset button incase you do a deep discharge and trip the BMS but that button no longer works. So if your BMS trips, you will need to wake it up by charging from utility source the Daly BMS does not wake up by solar charging in hybrid systems unless you are using an external CC

I have attached some pictures for your reference

LFP bank now available for pickup, reach me if interested.

JUO:

Discount for bulk orders

Can it be connected in series?

please can anyone enlighten me on Noiseless generator?. thanks.

saint2ace:


Can it be connected in series?

yes

earthrealm:


Bad wuked man

I recall a thread where you were talking about a 3 stage 12v charger with pulse/restoration setting. On another thread, searched cudnt locate it again, can you help me?.
Also the infinitum desulphator, who knows where i can get it and how much?

I can't recall the discussion on a charger with restoration seeing o, except it's the usual lead acid external charger which has 3 stage. But it does not have pulse/restoration setting.

omotoda:
Please expert in the house,is there really any difference in the efficiency of PWM CC compared to MPPT?I have attached 2 pictures of the current generated by both at about 10:30 am today.There isn't really any significant difference.The MPPT is connected to 260w x4 units of Felicity panels and is charging 2units of 200ah batteries in series while the PWM is connected to 160w x 4 units of Felicity panels charging 3 units of 105ah batteries in parallel.I really do not see much difference except there is something I am not analysing right.

Chai!

See as person dey waste energy with 4p1s connection on a good MPPT. You must be starving your 200ah series batteries.

That being said, with some experience of Lithium I can boldly say that your PWM will not measure up to the efficiency of the MPPT panel array for panel array, orientation for orientation, wire for wire, battery SoC for battery SoC and load for load.

Your comparison is a little flawed for the reason that the two set ups are not under the same condition. You need to have the two under the conditions I mentioned above. Besides your PWM with those gauge of wires I see on it will not survive a 4p 300 watts power at full blast. You will already get heat if not welding at the CC terminals.

When I had PWM harvesting power to my lithium batteries from a 4p 320w panel, it hardly charges past 26.2v despite the 60A PWM churning out around 40amps on most days. And mehn the wires at the DCB terminal were always warm that I am always fearful the times I am not home. The PWM just couldn't muster the strenght for that extra push/pressure to fill up the battery past its nominal 26.3v to the full 28.8v while the system is under load. Although it occasionally pushes to the 26.6v mark when there is NO LOAD on the system.

But the moment the long awaited 60A MPPT arrived and I did the needful (reconfigured to 2s2p), well the battery has always gotten charged to the recommended 28.8v despite having a 167 watts load constantly placed on it. And did I mention that the DCB terminal wires have been super cool. I could also add two more panels to make 6 panels in the array with rest of mind, something I couldn't do with the PWM cos the wires already get warm with 4 panels on.

Another scenario that is currently active:
Two set ups, the same solar panel orientation.
a. 2pcs 150 watts panel in series, 80AH LFP, 30amps MPPT, 40 watts load is almost always on it from 9am.

b. 2pcs 150 watts panels in parallel (same brand as above but purchased 2 months before), 60AH LFP, 20 amps PWM, 29 watts load occasionally on it during daytime.

Setup "a" charges to recommended 14.5v by 11:30 am on bright days while set up "b" in 9 out of 10 times never goes past 13.2v till sundown.

So for your 4pcs 300 watts panel, going MPPT rather than PWM was wise, however you're being unfair to that nice controller by going with a 4p solar panel array. The PWM cannot be compared to the MPPT for that size of system.

omotoda:


Batteries are in 2s2p.The voltage you see as 27.6v is the battery voltage not panel voltage

Below is panel voltage.

Okay, saw this after.

That notwithstanding, your MPPT's 52.4v at 21.3 amps will sure trump the PWM's "x" volts (I'm assuming around 49 volts) at 21.5 amps. We are even yet to put the battery's SoC into consideration yet o.

SoftHeart:


Thanks for your response.
I will ask him about the capacity of the panels.

The house is 4 bedrooms with home office, we have the following (possible) loads;
3 laptops, 1 LaserJet printer, 1 refrigerator (not deep freezer), 2 standing fans, 2 TV and decoder sets, 1 submersible pump, about 10 bulbs or so.
I don't actually know the actual power needed for each of the loads, but I'm not particularly interested in powering all of them with an inverter.

So Sir, do you think the recommended system is ok?

Bro, those bolded alone will gulp nothing less than 1,200 watts (1.2kw) simultaneous use. Either one can't be used comfortably on a system with two 300 watts solar panels (I'm assuming he'll supply you with 300 watts panel since he said 2 pcs). The pump (estimated 750 watts) and the laserjet (around 450 watts being conservative). My samsung laserjet draws 800 watts momentarily then throttles down to 180 watts per paper print.

You need to audit your load consumptions first. In addition, consider changing your standing fans to energy efficient ones and your bulbs to LED bulbs. Each laptop will take at least 60 watts so three is approaching 180 watts with simulateneous use. If printing is majorly for personal/home office use, you may consider getting a small budget inkjet printer (they consume less than 80 watts, some as low as 35 watts) as a side printer while you use your laserjet for times you have municipal power supply, you have your generator running or when you are able to upgrade your solar panels beyond the two units. However inkjet isn't cost effective for "photocopy business" where your monthly printing will be nearing 1,500/2000 copies.

Need to say that with all the loads you outlined, simultaneous use, except maybe the laptops and fans (and maybe the fridge with increased system components majorly solar panel), will not be a luxury you should expect.

And please insist he uses an MPPT charge controller of no less than 60 amps rating for you as it will also help in future upgrades. A number of installers outside will wanna use "Roy solar-like" PWM for you. Of course with MPPT controller, you will pay more cos those little "efficos" are expensive. And considering your use of printer and refrigerator, insist he uses a Pure Sine Wave inverter for you, no no to a Modified Sine Wave inverter else you risk damage to those appliances. And also tell him not to tamper with (cut off) the MC4 connectors of the solar panels, puleeeeease!

SoftHeart:


Thanks for your prompt response Sir.

Yes, the critical devices are the laptops, printer, TVs and bulbs. We can use generator for the others.

So with that, do you think the recommended system is ok?

Just curious, at the bolded, do you mean the budget be 6 or 7 digits?
Because the quotes I'm getting is already of 6 digits...

Hah bro!

Before you commit yourself, instruct the installer to do this:

Outline the components he intend to use for your set-up according to the following:
1. Brand name
2. Ratings (watts, kilowatts, amp-hours, awg/mm, as the case may be)
3. The price of each - he may not be comfortable giving you this but it's not bad to try your luck.
4. He should whatsapp those and the pictures of the components to you.

Then kindly come here and table your findings to the honorables here in the house to debate on the proposal and see if they can pass the budget to that "executive" (your installer) who will execute your installation.

ojeysky:


LFP bank now available for pickup, reach me if interested.

Bàbá don upgrade.

Just thinking.
If I drop my 24/100 (3 months in use now) for you, collect that 24/200 and add shinkini money to am. After all na the same supplier assemble am.

Just thinking ni o, not even decided on it yet (In Mr Macaroni's voice)

durumibaka:
please can anyone enlighten me on Noiseless generator?. thanks.

The only noiseless electric generator I know is inverter. It converts direct current DC from batteries to alternating current (AC) which most equipment in our household uses.

SoftHeart:


Thanks for your prompt response Sir.

Yes, the critical devices are the laptops, printer, TVs and bulbs. We can use generator for the others.

So with that, do you think the recommended system is ok?

Just curious, at the bolded, do you mean the budget be 6 or 7 digits?
Because the quotes I'm getting is already of 6 digits...

Maybe i didnt learn my digits well, but shouldnt 6 figures be 100,000 to 999,999? So if he gives you a 6-figure price for a 2.5kva, 2×200ah batteries and 2 panels (you need to clarify the watts rating), it isn't a bad idea, as long as it is within the lower range.

Please correct me, if possible

ceaser:


Bro, those bolded alone will gulp nothing less than 1,200 watts (1.2kw) simultaneous use. Either one can't be used comfortably on a system with two 300 watts solar panels (I'm assuming he'll supply you with 300 watts panel since he said 2 pcs). The pump (estimated 750 watts) and the laserjet (around 450 watts being conservative). My samsung laserjet draws 800 watts momentarily then throttles down to 180 watts per paper print.

You need to audit your load consumptions first. In addition, consider changing your standing fans to energy efficient ones and your bulbs to LED bulbs. Each laptop will take at least 60 watts so three is approaching 180 watts with simulateneous use. If printing is majorly for personal/home office use, you may consider getting a small budget inkjet printer (they consume less than 80 watts, some as low as 35 watts) as a side printer while you use your laserjet for times you have municipal power supply, you have your generator running or when you are able to upgrade your solar panels beyond the two units. However inkjet isn't cost effective for "photocopy business" where your monthly printing will be nearing 1,500/2000 copies.

Need to say that with all the loads you outlined, simultaneous use, except maybe the laptops and fans (and maybe the fridge with increased system components majorly solar panel), will not be a luxury you should expect.

And please insist he uses an MPPT charge controller of no less than 60 amps rating for you as it will also help in future upgrades. A number of installers outside will wanna use "Roy solar-like" PWM for you. Of course with MPPT controller, you will pay more cos those little "efficos" are expensive. And considering your use of printer and refrigerator, insist he uses a Pure Sine Wave inverter for you, no no to a Modified Sine Wave inverter else you risk damage to those appliances. And also tell him not to tamper with (cut off) the MC4 connectors of the solar panels, puleeeeease!



Hah bro!

Before you commit yourself, instruct the installer to do this:

Outline the components he intend to use for your set-up according to the following:
1. Brand name
2. Ratings (watts, kilowatts, amp-hours, awg/mm, as the case may be)
3. The price of each - he may not be comfortable giving you this but it's not bad to try your luck.
4. He should whatsapp those and the pictures of the components to you.

Then kindly come here and table your findings to the honorables here in the house to debate on the proposal and see if they can pass the budget to that "executive" (your installer) who will execute your installation.

Lol...Boss, as long as na one-man installer, there is now way in hell he will agree to do that. I once asked a seller that sells battery to send me a pic of his luminous battery so that i can make some decisions, the baba was just tossing me about until he eventually jokingly told me to come to his shop and see it so that i can buy it at once. I just weak.

ANEB:
My Journey into Renewable Energy.

That's a huge amount of power to generate considering that Calabar falls under a 4.5hour full sunlight per day region. I decided to cut down on some load... replaced all the light bulbs with LED bulbs. And  the load dropped to 15KWH in 24 hour usage. 


NOTE: Due to the peculiar nature of house, I had to make some concessions.
Trading high angle 19° for a 3.5 hour shading from 2pm. I figured the losses would be less with high inclination compared to 3.5 hours of shading.

Hello Gurus,
Please how many full sunlight hours per day region does abuja fall into?

odimbannamdi:


Lol...Boss, as long as na one-man installer, there is now way in hell he will agree to do that. I once asked a seller that sells battery to send me a pic of his luminous battery so that i can make some decisions, the baba was just tossing me about until he eventually jokingly told me to come to his shop and see it so that i can buy it at once. I just weak.

The one man installer should be able to give you a breakdown of what you are paying for. Failure to do that means he's up to no good. Note, installation costs varies, the experts do not shy away from giving you their cost (they are experts for a reason and will deliver quality job). Eg Installer A can collect 20k for installation, while installer B will collect 50k for the same job. It does not make installer B to be the greedy person as he may plan to use more quality items to do the job. I've seen the likes of installer A use components that will surprise you, eg I saw one use a 4mm² single core aluminium cable as the battery link!

Please do not engage any installer (it's your money you have the right to know how it's going to be spent ) that refuses to give you a breakdown, especially when you asked for it, as they may not even know what they are doing!

SoftHeart:


Thanks for your prompt response Sir.

Yes, the critical devices are the laptops, printer, TVs and bulbs. We can use generator for the others.

So with that, do you think the recommended system is ok?

Just curious, at the bolded, do you mean the budget be 6 or 7 digits?
Because the quotes I'm getting is already of 6 digits...

That was typo I meant 7digits but a lot have been said already about how you can reduce the cost by reducing your load

durumibaka:
please can anyone enlighten me on Noiseless generator?. thanks.

There is nothing like "noiseless generator". It is a marketing term employed by solar sellers and installers to "deceive" the unwary. There is "sound-proof" generators that are neither sound-proof nor noiseless. They are just less noisy than their non-sound proof ones. So, many times "noiseless generators" are just solar/inverter setups. While a typical solar setup makes so very little noise compared to power generators, it is not entirely noiseless; the fans on inverter and charge controllers make varying degree of noise depending on make and age. But, you are guaranteed not to disturb your neighbors with noise from solar setups.

odimbannamdi:


Lol...Boss, as long as na one-man installer, there is now way in hell he will agree to do that. I once asked a seller that sells battery to send me a pic of his luminous battery so that i can make some decisions, the baba was just tossing me about until he eventually jokingly told me to come to his shop and see it so that i can buy it at once. I just weak.

Good afternoon, can you pls post a picture of the dc watt meter you bought as the one I saw in the place you bought yours looks inferior to me

@ceaser
Thanks so much.
I will ask him the questions, and feed the house back with his response.

About the load issue, the priority now is on the laptops, TVs and decoders, and the bulbs, and of course charging of phones.

I can still be using generator for pump, printer and co.

I asked him earlier about the rating of the panels, he said 280W.
I will ask him the other questions now, and get his response back here.

Thanks and God bless.

odimbannamdi:


Maybe i didnt learn my digits well, but shouldnt 6 figures be 100,000 to 999,999? So if he gives you a 6-figure price for a 2.5kva, 2×200ah batteries and 2 panels (you need to clarify the watts rating), it isn't a bad idea, as long as it is within the lower range.

Please correct me, if possible

Thanks Sir.
He said the panels are 280W.
The quote is actually in the mid range (around 500) but I'm yet to negotiate, I want to get an accurate information about the reliability of the system first, before negotiating the price.

SoftHeart:


Thanks Sir.
He said the panels are 280W.
The quote is actually in the mid range (around 500) but I'm yet to negotiate, I want to get an accurate information about the reliability of the system first, before negotiating the price.

better contact professional solar system sellers/installers here, than this your seller that is suggesting 2pcs 280w panels, for a 24V 200ah system, he will end up giving u substandard 200ah batteries, modified sine wave inverter and a crappy 20A PWM CC. he is probably an inexperienced seller who just want to sell his market and nothing more

Valto:
better contact professional solar system sellers/installers here, than this your seller that is suggesting 2pcs 280w panels, for a 24V 200ah system, he will end up giving u substandard 200ah batteries, modified sine wave inverter and a crappy 20A PWM CC. he is probably an inexperienced seller who just want to sell his market and nothing more

Thanks Sir.
So I asked some questions from the man as advised by @ceaser and I got the following information from him.

Brand: Soccer Power Inverter

Type: 2.5KVA Pure Sine Wave Inverter

Battery: Altimate Agm 200Ah, 12VDC High Quality. 2 batteries.

Panel: 2 panels (280W)

Are you going to use MPPT charge controller?
No. I will use PWM Charge Controller
The MPPT is meant for multiple solar panels, like 16panels, While the PWM is meant for 2 or more.
Is this information about the charge controller correct?

Also, please what's your advice on this?

SoftHeart:


Thanks Sir.
So I asked some questions from the man as advised by @ceaser and I got the following information from him.

Brand: Soccer Power Inverter

Type: 2.5KVA Pure Sine Wave Inverter

Battery: Altimate Agm 200Ah, 12VDC High Quality. 2 batteries.

Panel: 2 panels (280W)

Are you going to use MPPT charge controller?
No. I will use PWM Charge Controller
The MPPT is meant for multiple solar panels, like 16panels, While the PWM is meant for 2 or more.
Is this information about the charge controller correct?

Also, please what's your advice on this?

Hi,
Pls RUN!!

In fact, I just came from Ilorin, I gave someone estimate, I guess it was too much!
So he went down the route u are about to take, exactly same quote and system, for about 500k too.
Sadly, batteries are now dead, 20a pwm, wires from panels to CC and to batteries, 2.5mm, etc. Installation was in March, I was there yesterday to look at it, after serious begging ni o. But the deed as being done. He is asking me now, what do we do?

Oshomo12:


Hi,
Pls RUN!!

Thanks. So what will you recommend?

SoftHeart:


Thanks. So what will you recommend?

For your 2.5kva with two 200ah
1. Mppt CC, 50A, 100V or 150v
2. 1,000w solar(recommended)
3. wires, 6mm(panel to cc) 13/16mm cc to batteries
4. Never chop off panel MC4 connectors
5. Circuit breakers for panels, fuse, both dc and ac SPD's. Etc etc

Just to add, buy a better battery and inverter

Oshomo12:


For your 2.5kva with two 200ah
1. Mppt CC, 50A, 100V or 150v
2. 1,000w solar(recommended)
3. wires, 6mm(panel to cc) 13/16mm cc to batteries
4. Never chop off panel MC4 connectors
5. Circuit breakers for panels, fuse, both dc and ac SPD's. Etc etc

Thanks so much for this.

Please do you know of any person that can get this done for me? And can I have a rough idea of the total cost?

SoftHeart:


Thanks Sir.
So I asked some questions from the man as advised by @ceaser and I got the following information from him.

Brand: Soccer Power Inverter

Type: 2.5KVA Pure Sine Wave Inverter

Battery: Altimate Agm 200Ah, 12VDC High Quality. 2 batteries.

Panel: 2 panels (280W)

Are you going to use MPPT charge controller?
No. I will use PWM Charge Controller
The MPPT is meant for multiple solar panels, like 16panels, While the PWM is meant for 2 or more.
Is this information about the charge controller correct?

Also, please what's your advice on this?

i talk am say na quack . imagine recommending unknown brand of 200ah agm(probably 150ah in reality) and
just 2pcs of 280w panels and a 20A PWM, with the usual 2.5mm wire ,
the elders are coming to recommend a good setup for you, only if u will agree to save up, and go for durability. u need atleast 800k.