₦airaland Forum

TheCreatorVerse:
I need review on this Solar Panel

Type = 200W Mono
Price = ₦53,000
Brand = Sun Field

My questions are:
1. Is this panel genuinely mono?
2. Is the price reasonable?
3. How reliable are Sun Field products?
4. Overall, is this a good-quality Solar Panel?

MoNo panels are black in Color, while POLY panels are blueish in color. Of course there are other Solar panel designs BUT just stick to these popular 2.
Now if what you have above is Black in color, then it's Mono

kristien4:
When you used the word something "fishy". That was an attack on my person. I have no business defending growatt or jinko. You can say its impossible for panels to produce 100% of their watts, and you can say charge controllers show higher readings, that will be your opinion. Saying my marketing is fishy, is accusing me already. I have a dealership with Fouani, i can sell panels/inverter/acs/tvs for lower than the price you see on the fouani website. But you dont see me posting ads here everyday.i hardly post. Few days b4 i made that post, i noticed the sun was super bright, the brightest i have seen since i installed my growatt 5000spf. I'm like let me check, i noticed the harvest was super high, i snapped and posted with a little ad stating i was in benin, because i no get strength for ship here and there. All of a sudden someone says I'm being fishy. Anyways no vess, your comment annoyed me.

...but you ended up not proving to us how you got to the 100% tag

dollarnaira:
CNG wont be cheaper in the future maintain your petrol car. It is cheaper now because there are less cars using CNG. Time will tell.

Exactly reason why until Now, I still use a mixture of Kerosene stove, and Electric stove. People have advised me tire. I kept telling then soon, Cooking gas prices would rise. I was right after all; as usual.

Of course if anyOne had loaned me a Gas cylinder, I would have used GAS but wasn't willing to invest in something I knew I would drop sooner or later.

Looking to build an Oil stove which would make use of different types of oil. Just don't have time yet.

Wonder why You guys ain't using CNG for cooking yet ?

My own is, I fear for cars using CNG, as in, I hope it's adoption doesn't go round fully as Me go dey select Cars wey I go enter. Make dem no use person do Dynamite

adrusa:
What I have heard is that the inverter ACs are not as good in terms of cooling.

That's a completely wrong assertion/assumption. They are highly efficient in cooling. As good as the non inverter types. And even better, considering the power efficiency.

adrusa:
What I have heard is that the inverter ACs are not as good in terms of cooling.

Such debate could be similar to AC vs DC motors.

AmakaRuby:
Tnx sir, what of the quantity of 2.5mm wire?

You don't need AC cables as such in solar installation.
But that's a very huge amount of AC cables in that quotation. Maybe you asked him to do some worrying large scale wiring in your house that you are not telling us. You need to give more info on what you are doing. If not, for normal solar installation no AC cables needed as such

bassdow:
...but you ended up not proving to us how you got to the 100% tag

you did not follow the discussion from the start i guess, i posted a snapshot of my growatt inverter doing i think 4729watts with 8pieces 580watts.I think last week or earlier this week.

Iinnov8:
Hello bro,

It is a good idea, as a newbie, to start small and learn on the go, before upgrading and going big. Most of us started small as well, mostly for budget reasons though...

For your budget, i can offer you the following:

1. Powmr 12.8v 100ah (1280wh/1/29kwh) Lithium (LiFePO4) battery for 290,000 each. Battery will come with a free voltage indicator as shown in the picture below

You can watch the load capacity test video of the battery done by a very technical Nairalander and contributor to this thread:


https://www.youtube.com/watch?v=JTtdMd25__s

You can also visit our dedicated thread to see 2 other videos he did on the battery, and also check out a few reviews from current users of the battery:
https://www.nairaland.com/8194434/powmr-12.8v-100ah-lithium-lifepo4#131666850

---

2. EASun 1600w (800w) Pure Sinewave offgrid inverter for 69,000, capable of powering your house through the mains input and carrying significant normal everyday home appliances

You can check out this hobbyist and crude video i did showing the appliances the inverter can carry


https://www.youtube.com/watch?v=6KAuD7Bh9uk?si=CqzIQxmY5bmpRlGm

---

3. Dedicated 20A Lithium (LiFePO4) battery charger. It is a smart charger that can charge your battery to the maximum recommended charge voltage of 14.6v, and stop charging to prevent damage to your battery. And it can recharge your battery back to full capacity in 5hours.

Price is 48,000

---

A major benefit of this system is that it is modular (meaning, its components are stand-alone), easily mobile and very easy to connect as you can see in the 3rd picture, so you have opportunities to manipulate the system for learning purposes, easily upgrade in the future and you can even use it for other purposes.

For instance, i can easily detach the battery voltage indicator and use it to check the voltage of my car battery as part of troubleshooting if my car refuses to start on a morning. I also, occasionally, use the system to quickly start my car if my car battery is flat.

With an extra 16k, I can also offer you a customized bag with which you can easily carry the system from place to place.

I am in Lagos, and you can get the system within 24hours.

Reach me on: 091-6043-7395

Hi, a lithium charger that charges to max 14.6v is destroying the lithium battery fast.
It's not good to charge lithium that high, and that's what many don't know and they killing their battery like that and it won't last for years as expected. It's tubular and gel that can go that high.

For lithium, it's advised not to go higher than 14.2 (which is even till high). Best voltage charge setting is 13.9v or 14.0v.

True your lithium won't charge full, but you are sure your lithium will do 15 - 20 years with that. If your battery has editable bms, you can charge it so that 3.5v (which is 14.0v) be 100%.

This is an info many Nigerian lithium dealers and installers don't know.

bassdow:
Exactly reason why until Now, I still use a mixture of Kerosene stove, and Electric stove. People have advised me tire. I kept telling then soon, Cooking gas prices would rise. I was right after all; as usual.

Of course if anyOne had loaned me a Gas cylinder, I would have used GAS but wasn't willing to invest in something I knew I would drop sooner or later.

Looking to build an Oil stove which would make use of different types of oil. Just don't have time yet.

Wonder why You guys ain't using CNG for cooking yet ?

My own is, I fear for cars using CNG, as in, I hope it's adoption doesn't go round fully as Me go dey select Cars wey I go enter. Make dem no use person do Dynamite

Have you considered using a kerosene gas cooker?

swagifted:
this is the only CNG i know oo 😂

Bros hmmm
Real CNG
enjoy!!!!!!

Obnoxious2001:
Have you considered using a kerosene gas cooker?

Make una come up with options ooo.
Which one be kerosene gas. Is kerosene still in existence? No vex o. E don tey.
Update me biko

dollarnaira:
Make una come up with options ooo.
Which one be kerosene gas. Is kerosene still in existence? No vex o. E don tey.
Update me biko

Yes it's in existence.
Just that the demand is low.

For the kerosene gas cooker, it existed at the early stage before cooking Gas became very popular.

ask4bk:
Hi, a lithium charger that charges to max 14.6v is destroying the lithium battery fast.
It's not good to charge lithium that high, and that's what many don't know and they killing their battery like that and it won't last for years as expected. It's tubular and gel that can go that high.

For lithium, it's advised not to go higher than 14.2 (which is even till high). Best voltage charge setting is 13.9v or 14.0v.

True your lithium won't charge full, but you are sure your lithium will do 15 - 20 years with that. If your battery has editable bms, you can charge it so that 3.5v (which is 14.0v) be 100%.

This is an info many Nigerian lithium dealers and installers don't know.

Many Nigerians?
No ooo
Most us are are fully aware here too.
LifePO4 is regarded full from 13.7v sef. I do 13.9v though.

HeavenlyBang:
Nothing supports this theory. My inverter ACs perform as well as any AC can. In fact, my Hisense inverter outperforms my older Samsung non-inverter.

increase the room size and see

Feedback are often helpful

ask4bk:
You don't need AC cables as such in solar installation.
But that's a very huge amount of AC cables in that quotation. Maybe you asked him to do some worrying large scale wiring in your house that you are not telling us. You need to give more info on what you are doing. If not, for normal solar installation no AC cables needed as such

House is wired, it is to install solar. I have inverter, battery & panels I bought

ask4bk:
Hi, a lithium charger that charges to max 14.6v is destroying the lithium battery fast.
It's not good to charge lithium that high, and that's what many don't know and they killing their battery like that and it won't last for years as expected. It's tubular and gel that can go that high.

For lithium, it's advised not to go higher than 14.2 (which is even till high). Best voltage charge setting is 13.9v or 14.0v.

True your lithium won't charge full, but you are sure your lithium will do 15 - 20 years with that. If your battery has editable bms, you can charge it so that 3.5v (which is 14.0v) be 100%.

This is an info many Nigerian lithium dealers and installers don't know.

Where is your evidence? show us real life LFP battery failed because it was charged to 3.65V.

The Manufacturer tested them for 1C 2.5V to 3.65V, so where your evidence it wont last long?

Its Like saying those making 14.6V chargers don't know what they are doing, or the want to purposely degrade your batteries.

Dam5reey1:
Where is your evidence? show us real life LFP battery failed because it was charged to 3.65V.

The Manufacturer tested them for 1C 2.5V to 3.65V, so where your evidence it wont last long?

Its Like saying those making 14.6V chargers don't know what they are doing, or the want to purposely degrade your batteries.

I follow lifepo4 contents a lot. I'm member to some lifepo4 online communities in the USA. The general consensus for top users and engineers in this area is that lifepo4 be changed at max 13.9-14.0v. Some even go lower. Some go higher. But I only shared the consensus.

I asked Chatgpt now, and here's the answer they gave.

Charging a LiFePO4 battery to 14.6V can be problematic because it places the battery near its maximum safe voltage, which can stress the cells and shorten the battery's lifespan. Here are some reasons for avoiding 14.6V as a charging limit:

1. Increased Stress on Cells: Charging to the upper voltage limit can push the cells close to overcharge, increasing stress and leading to premature aging.


2. Reduced Cycle Life: LiFePO4 batteries have a longer lifespan when not charged to the maximum voltage. Lowering the float charge (e.g., to 14.0V as you've set) can help maintain the battery's cycle life, potentially reaching or exceeding the 4000 cycles.


3. Minimal Capacity Gain: Charging from 14.0V to 14.6V typically only adds a few percent to the overall capacity. The slight gain in capacity does not compensate for the loss in lifespan caused by regular charging to the higher voltage.


4. Heat Generation: Charging at higher voltages can cause the battery to heat up slightly, which also contributes to wear and tear over time.


Keeping the voltage lower (like 14.0V) balances capacity with longevity, making it a good choice for extending your battery's useful life

ask4bk:
I follow lifepo4 contents a lot. I'm member to some lifepo4 online communities in the USA. [/b]The general consensus for top users and engineers in this area is that lifepo4 be changed at max 13.9-14.0v. Some even go lower. Some go higher. But I only shared the consensus.

I asked Chatgpt now, and here's the answer they gave.

[b]Charging a LiFePO4 battery to 14.6V can be problematic because it places the battery near its maximum safe voltage, which can stress the cells and shorten the battery's lifespan. Here are some reasons for avoiding 14.6V as a charging limit:

1. Increased Stress on Cells: Charging to the upper voltage limit can push the cells close to overcharge, increasing stress and leading to premature aging.


2. Reduced Cycle Life: LiFePO4 batteries have a longer lifespan when not charged to the maximum voltage. Lowering the float charge (e.g., to 14.0V as you've set) can help maintain the battery's cycle life, potentially reaching or exceeding the 4000 cycles.


3. Minimal Capacity Gain: Charging from 14.0V to 14.6V typically only adds a few percent to the overall capacity. The slight gain in capacity does not compensate for the loss in lifespan caused by regular charging to the higher voltage.


4. Heat Generation: Charging at higher voltages can cause the battery to heat up slightly, which also contributes to wear and tear over time.


Keeping the voltage lower (like 14.0V) balances capacity with longevity, making it a good choice for extending your battery's useful life

Isorite... USA..

Leave story evidence no dey....

What will be like cycle if i charge to 3.65V vs 3.5V
Show me real life batteries in use.. not Chatgpt which realies on what people are saying.

dollarnaira:
Many Nigerians?
No ooo
Most us are are fully aware here too.
LifePO4 is regarded full from 13.7v sef. I do 13.9v though.

Hmmm. I bet you that 90% of lithium users in Nigeria have their inverter or solar charger set to default settings of 14.6v or higher.

I've checked many lithium application systems and in all I've never seen one set correctly. I always help them by resetting it to 13.9v charge and float (we force the float though lithium don't need float, because if you don't, after your battery is charged during the day, your appliances begin to run from your battery and not from the panels).

Bro, many are damaging their lithium without knowing especially as many installers don't even know, like the guy above arguing on why the manufacturer made the charger with 14.6v, asking if I know more than the company. Lol

ask4bk:
Hmmm. I bet you that 90% of lithium users in Nigeria have their inverter or solar charger set to default settings of 14.6v or higher.

I've checked many lithium application systems and in all I've never seen one set correctly. I always help them by resetting it to 13.9v charge and float (we force the float though lithium don't need float, because if you don't, after your battery is charged during the day, your appliances begin to run from your battery and not from the panels).

Bro, many are damaging their lithium without knowing especially as many installers don't even know, like the guy above arguing on why the manufacturer made the charger with 14.6v, asking if I know more than the company. Lol

How many damaged LFP batteries have you examined?

Dam5reey1:
Isorite... USA..

Leave story evidence no dey....

What will be like cycle if i charge to 3.65V vs 3.5V
Show me real life batteries in use.. not Chatgpt which realies on what people are saying.

I just told you it's a SCIENTIFIC CONSENSUS in the area of lifepo4. Use your Google and search on life experiences of long time users of lifepo4 charging at high voltage like 14.6v.
Don't take my silly words. Go do your research and maybe come back to tell me thank you for opening your mind.

You are free to keep charging at 14.6v or even 15v if you want. Shey you need full battery. You'll get it.

ask4bk:
I just told you it's a SCIENTIFIC CONSENSUS in the area of lifepo4. Use your Google and search on life experiences of long time users of lifepo4 charging at high voltage like 14.6v.
Don't take my silly words. Go do your research and maybe come back to tell me thank you for opening your mind.

You are free to keep charging at 14.6v or even 15v if you want. Shey you need full battery. You'll get it.

Show here the battery that died because it was charged to 14.6V

Cause all these theories does not old any waters.

Battery can be charged/Discharged from 3.65V to 2.5V.
This is how all Cells were tested out of factory..

Practically nothing happens after cells reaches 3.65V. current will reduce drastically once it approaches 3.5~3.65V

I have not seen a video or anyone with practical test showing cell Charged to 3.65V vs Cell charged to 3.5V and capacity left after 5 years.

HeavenlyBang:
12 hours.

Two jinko 555w panels - 250k
Find a small 12v hybrid inverter to buy from brands like Sako, Welion, CWorth - 250k
Powmr 100aH battery -290k
Accessories and installation - 150k

Put the inverter in power saving mode so it doesn't invert if it doesn't detect a load, then buy a timer for the freezers.

You can run on solar from 8 am - 5 pm, which is 9 hours.

Set the timer to come on at midnight and go off by 3 am.

My ~200L chest freezer draws just 110w. Even a 300L freezer shouldn't take more than 150W. Two of them 300w. Three hours of use should have the battery down to about 25% of charge.

Twelve hours of runtime daily, and your freezers remains frozen for 24 hours.

Thank you so much for taking your time to provide this much info.
I really appreciate 🙏.

Ferdiwar:
If you can afford the inverter freezers great go for them.

You can go for any of these;

1. LG (confirm if fouani has the normal type in stock as they only had the tall standing ones the last time I checked.
2. Haier Thermocool (check around for their authorized dealers)
3. TCL or Aeon (check jamara homes website).

If you can't afford the inverter models at this time, buy the normal/non inverter ones and reduce the thermostat from 7/8 to 5 this way you won't need to manually turn them off all the time and with a small battery bank you are sure of constant power to the freezees and enough battery juice to start your day with.

I prefer a higher wattage Solar panel as it reduces the need for bigger roof space and hybrid inverters with high voltage PV.

Thank you, I will check the recommendations out.

mctfopt:
Felicity not bad. Transformerless hybrids are cheaper but often, in general terms, not as rugged as transformer based inverter in handling surges. Felicity IVPS/IVPM series are transformer based. The Felicity IVPM has hybrid series. The Felicity IVEM hybrid models are transformerless and of course cheaper. So you can check out Felicity's IVPM hybrid series.

I'm just super grateful for the info you guys are willing to share here.

Not easy to get brain and be willing to help with it.

I salute you. I will check the IVPM series out.
Hopefully I can find the genuine one

Dam5reey1:
Show here the battery that died because it was charged to 14.6V

Cause all these theories does not old any waters.

Battery can be charged/Discharged from 3.65V to 2.5V.
This is how all Cells were tested out of factory..

Practically nothing happens after cells reaches 3.65V. current will reduce drastically once it approaches 3.5~3.65V

I have not seen a video or anyone with practical test showing cell Charged to 3.65V vs Cell charged to 3.5V and capacity left after 5 years.

Oga, shey we agreed you should keep charging your lithium to full 3.65V. I don't know else to say, since I've told you to go research.

HeavenlyBang:
12 hours.

Two jinko 555w panels - 250k
Find a small 12v hybrid inverter to buy from brands like Sako, Welion, CWorth - 250k
Powmr 100aH battery -290k
Accessories and installation - 150k

Put the inverter in power saving mode so it doesn't invert if it doesn't detect a load, then buy a timer for the freezers.

You can run on solar from 8 am - 5 pm, which is 9 hours.

Set the timer to come on at midnight and go off by 3 am.

My ~200L chest freezer draws just 110w. Even a 300L freezer shouldn't take more than 150W. Two of them 300w. Three hours of use should have the battery down to about 25% of charge.

Twelve hours of runtime daily, and your freezers remains frozen for 24 hours.

Nice detailing Bro.
But why do you need to put on the freezer at night again?
My freezer runs from 8am to 5pm. At 8am next day, freezer and contents are still frozen.

ask4bk:
Hmmm. I bet you that 90% of lithium users in Nigeria have their inverter or solar charger set to default settings of 14.6v or higher.

I've checked many lithium application systems and in all I've never seen one set correctly. I always help them by resetting it to 13.9v charge and float (we force the float though lithium don't need float, because if you don't, after your battery is charged during the day, your appliances begin to run from your battery and not from the panels).

Bro, many are damaging their lithium without knowing especially as many installers don't even know, like the guy above arguing on why the manufacturer made the charger with 14.6v, asking if I know more than the company. Lol

Well, it is a about our choices. All I know is that Samsung 26J lithium ion sheet discouraged 12.6v full charge to extend battery life. This was applied to my LifePO4 as a caution. By July next year, it will b 4yrs. It will degrade to 80% its capacity after 10 to 12years at least. So the journey of degraded lithium in still in the future where the remaining 80% will now begin another fresh journey. What a chemistry?

ask4bk:
Oga, shey we agreed you should keep charging your lithium to full 3.65V. I don't know else to say, since I've told you to go research.

These are battery makers
Not a random chatgpt.. did you see where Charge voltage is mentioned here.


https://www.felicitysolarstore.com/understanding-the-lifespan-of-lifepo4-batteries-a-detailed-guide#:~:text=Ans%3A%20On%20average%2C%20a%20LiFePO4,Cycle%20Life%2C%20and%20proper%20Maintenance.

Go and check the charging voltage on Felicity batteries, they have 15 years+ experience..

dollarnaira:
Well, it is a about our choices. All I know is that Samsung 26J lithium ion sheet discouraged 12.6v full charge to extend battery life. This was applied to my LifePO4 as a caution. By July next year, it will b 4yrs. It will degrade to 80% its capacity after 10 to 12years at least. So the journey of degraded lithium in still in the future where the remaining 80% will now begin another fresh journey. What a chemistry?

Every lithium company discourages charging at 14.6v. Instead of Dam5reey1 to learn from this community he is insisting in his wrong opinion.

I bought cworth 20kwh lithium battery the other day, and it clearly said to set charging voltage to 55.6v which corresponds to 13.9v.
The Aurora lithium I'm selling said same. Sako, Anker, even Japanese Samsung lithium outside the country insist on same. Lithium doesn't like being charged to 100%.

When you buy a new Samsung phone now, it tells you, you can charge your phone to 100% oh but we don't advice it. Every phone and laptop has a charging option to charge only to 80-85% so that your phone lasts for long.
My S21 is going to 4 years now, and I always charge only to 80%. My phone still stays a whole day like new, compared to my older phones I always charged to 100% and after 2 years battery is a mess. Phones and pc lithium ion.
Lithium ion and lithium phosphate should never be charged to 3.65V.

Dam5reey1:
These are battery makers
Not a random chatgpt.. did you see where Charge voltage is mentioned here.


https://www.felicitysolarstore.com/understanding-the-lifespan-of-lifepo4-batteries-a-detailed-guide#:~:text=Ans%3A%20On%20average%2C%20a%20LiFePO4,Cycle%20Life%2C%20and%20proper%20Maintenance.

Go and check the charging voltage on Felicity batteries, they have 15 years+ experience..

Told you to go research, see wetin you go de search.
Watch...


https://www.youtube.com/watch?v=lEW6m-iKH8w