ojeysky:


@eleojo23 has said it will, before you go on this project you first need to be sure that you have at least a six digit budget. However there may be a cheaper option if you are only targeting 10hrs max

If we factor in 0.8 inverter efficiency that's at least 10.8Kwh of power storage that will be required assuming the 10hours is from backup and that will require 400AH of 24v Lifepo4. However if we can factor in 5 to 6hrs of sunlight then you can comfortably reduce your battery capacity by half. The following should be sufficient

- 270w panel 9 units
- 200AH Lifepo4 or 400AH lead acid
- 3kva hybrid inverter
- connection accessories

With a a little above a million you should be all set-up.

Disclaimer: These are rough estimates

millions ke!!!! I never belleful like that ooo. please what can be done to reduce the cost..

like 600watts for 8 hours

limpopo:


millions ke!!!! I never belleful like that ooo. please what can be done to reduce the cost..

like 600watts for 8 hours

I still see millions

How about you give an idea of the appliances you want to run on the setup?

Maybe gurus here can give you energy-efficient options or advice on how to best optimise the appliances for lower consumption.

600w continous for 8hours is still huge.

ojeysky:


Lol okay, I have ANT BMS on ground for sale if you are interested, though that is 320A

Yeah, I know you have that LFP/Li-ion BMS. But na shikini 30amp I'm in need of.

Thanks.

ojeysky:


You have a single 12v battery so the CC will charge based on[b] 12v peak even though you have 600w total so yes it's a disadvantage[/b]. When you have 2 batteries you can have them in series to make 24v to take full advantage of the CC charge current and maximize your panel hervest

Thanks.

In simpler terms, you mean I should continue with the current arrangement (4p) instead of 2s2p since I use 12V?

eleojo23:


I still see millions

Lol. This gat me.

Reminds me of one Nollywood movie like that.

Bàbá, please if I sacrifice my manhood, will poverty stop in my life?

Bàbá replied, even if you sacrifice your head today, I still see poverty chasing you o.

IYGEAL:


Thanks.

In simpler terms, you mean I should continue with the current arrangement (4p) instead of 2s2p since I use 12V?

You have better chances with 2s 2p than with 4p because of your use of MPPT. 4p on your MPPT will not give enough headroom for the CC to display its prowess to handle your 12v battery demands.

So for now, go 2s 2p. When you now have enough strength to go 24v system, you can consider getting two more similar rating panels to make a 3s2p.

..

eleojo23:


I still see millions

How about you give an idea of the appliances you want to run on the setup?

Maybe gurus here can give you energy-efficient options or advice on how to best optimise the appliances for lower consumption.

600w continous for 8hours is still huge.

This one that you are seeing millions now!!

okay, the breakdown.. I don remove some gadgets shaa

43inch TV - 80watts
sound bar --- 70watts
led bulbs (5watts) -- 8pcs -- 40 watts
decoder -- 30watts
phone chargers-- let's say 10watts(10* 5phones)--- 50watts
fans--- (4pcs *40watts)--- let's say 200watts

All the above calculation Na 470watts

So, 470watts for 8hours

cc
Valto
earthrealm
ojeysky
kiekie1
sathob
GeorgeD1

ceaser:


Lol. This gat me.

Reminds me of one Nollywood movie like that.

Bàbá, please if I sacrifice my manhood, will poverty stop in my life?

Bàbá replied, even if you sacrifice your head today, I still see poverty chasing you o.

That Baba na savage.

limpopo:


This one that you are seeing millions now!!

okay, the breakdown.. I don remove some gadgets shaa

43inch TV - 80watts
sound bar --- 70watts
led bulbs (5watts) -- 8pcs -- 40 watts
decoder -- 30watts
phone chargers-- let's say 10watts(10* 5phones)--- 50watts
fans--- (4pcs *40watts)--- let's say 200watts

All the above calculation Na 470watts

So, 470watts for 8hours

Now we are getting somewhere....

From your list, I don't think all these will run simultaneously for 8hours. For instance, your phones cannot charge continuously for 8hours so that knocks off the 50w from your continous load.
I assume your continous load will eventually be around 350w.

Now, lets wait for the gurus to come and give you figures in hundreds of thousands, shey that is Ok?

eleojo23:


Now we're are getting somewhere....

From your list, I don't think all these will run simultaneously for 8hours. For instance, your phones cannot charge continuously for 8hours so that knocks off the 50w from your continous load.
I assume your continous load will eventually be around 350w.

Now, lets wait for the gurus to come and give you figures in hundreds of thousands, shey that is Ok?

Sigh!!! sure!!!

limpopo:


This one that you are seeing millions now!!

okay, the breakdown.. I don remove some gadgets shaa

43inch TV - 80watts
sound bar --- 70watts
led bulbs (5watts) -- 8pcs -- 40 watts
decoder -- 30watts
phone chargers-- let's say 10watts(10* 5phones)--- 50watts
fans--- (4pcs *40watts)--- let's say 200watts

All the above calculation Na 470watts

So, 470watts for 8hours

cc
Valto
earthrealm
ojeysky
kiekie1
sathob
GeorgeD1

there are low wattage standing/ceiling fans that consumes less than 20w. u may have to invest in them, to bring your fan energy consumption, down to less than 80w.

IYGEAL:


Thanks.

In simpler terms, you mean I should continue with the current arrangement (4p) instead of 2s2p since I use 12V?

Am saying you should reconfigure to 2s2p so you have early wake up and late shutdown

Valto:
there are low wattage standing/ceiling fans that consumes less than 20w. u may have to invest in them, to bring your fan energy consumption, down to less than 80w.

Noted... thanks...

Abeg make una help me calculate ooo

ojeysky:


Am saying you should reconfigure to 2s2p so you have early wake up and late shutdown

Merci beaucoup!

I'd be rearranging this evening or tomorrow morning.

ceaser:


You have better chances with 2s 2p than with 4p because of your use of MPPT. 4p on your MPPT will not give enough headroom for the CC to display its prowess to handle your 12v battery demands.

So for now, go 2s 2p. When you now have enough strength to go 24v system, you can consider getting two more similar rating panels to make a 3s2p.

Thanks a lot. I appreciate.

PS. By the bolded, I guess you meant 3s3p.

IYGEAL:


Thanks a lot. I appreciate.

PS. By the bolded, I guess you meant 3s3p.

Nope with 6 panels it's either 3s2p or 2s3p

Valto:
SOROTEC 3kva 24V 80A Mppt wifi enabled Hybrid inverter for sale @ 270k whatsapp:080-8541-5985
Key Features:
1. Touch screen display
2.PV and utility power take the load at same time(can setting)
3.Output power factor PF=1.0
4.On&Off Grid with energy storage
5. Energy generated record,load record,history information and fault record
6.Language and time setting
7.Structure with dust filter
8.AC charging and AC output time setting
9.Charging voltage and charging current timing
10.External Wi-Fi device optional(android phone monitoring)
11.Parallel operation with up to 6 units only available
12. batteryless function
13.Wide PV input range 120-450VDC
14.Independent CPU
15.MAX PV Array power 4500W
16.Solar and Utility supply power to the load when solar power is not sufficient to load
17. 90A mppt solar controller
18 60A utility charger
19. dedicated lithium battery profile
20. all functions adjustable and programmable.

Can you explain number 13 please. I don't understand what you mean by wide range for Voc. Normally it's just one figure.

Also what's the individual utility charge current and that for the MPPT. Which of them has this 80A? Thanks.

Leopantro:


How long does your 45A battery last?
What total watt load do you put on it?
Your inverter is 24V?
Why did you not use a BMS on it?
How do you know when it gets to the minimal cut out voltage?
What did you use to check ththe capacity of each Li-ion?
I believe that is a 6P18S setup?
Did you use spot welding or soldering?
How did you differentiate between good and bad batteries for them to have lasted 2 years?

- I have a 180Ah Battery and it lasts about 15hrs depending on what i run on it which i always keep to least minimal
- Max about 500w
- Yes, @24v 1.5kva
- I have my inverter set to a Min and Max voltage operation.
- I have the Opus battery tester.
- No, its 7s100p
- I used soldering
- Physical Check + Capacity Check

ojeysky:


Nope with 6 panels it's either 3s2p or 2s3p

Oh, I just realized this. Thanks for the clarification.

essegis:


Can you explain number 13 please. I don't understand what you mean by wide range for Voc. Normally it's just one figure.

Also what's the individual utility charge current and that for the MPPT. Which of them has this 80A? Thanks.

it means the pv voltage must be from 120vdc minimum to 450vdc maximum
utility charge current is 60A
inbuilt mppt cc is 80A

limpopo:


This one that you are seeing millions now!!

okay, the breakdown.. I don remove some gadgets shaa

43inch TV - 80watts
sound bar --- 70watts
led bulbs (5watts) -- 8pcs -- 40 watts
decoder -- 30watts
phone chargers-- let's say 10watts(10* 5phones)--- 50watts
fans--- (4pcs *40watts)--- let's say 200watts

All the above calculation Na 470watts

So, 470watts for 8hours

Abeg, which decoder dey chop 30 watts? Na those old type of decoders Una dey use?

Except it's DSTV PVR decoder which I believe won't even fully gulp more than 15w to 20w consumption, most other decoders are in the range of 3 watts, 4 watts

If your 43 inch TV has energy saving option and you get it activated, you can end up with lower consumption of between 40 watts to 45 watts.

APPLIANCES:
Approx. 500w (8 hours) Day time loads = 4kwh
1. 1kva 12Vdc Inverter
2. 4# 300w solar panels
3. 60A CC (Capable of charging Lead Acid or Lithium)
4a. 2# 200Ah 12V dc nominal Lead Acid bank or
4b. 2# 100Ah 12V dc nominal Lithium bank
5. Isolation and protection accessories

Energy Storage @ 12V dc nominal: (8hr DayTime Use)
400Ah @C10 - Lead Acid: 4kwh (50% - Useable = 2kwh) or
200Ah @C2 - Lithium: 2.5kwh (80% - Useable = 2kwh)

Pv Array:
4kwh generated in 4 hours of sunshine = 1000w (4# 300w panels)

Source Priority:
1. Solar
2. Battery
3. Grid
4. Gen

You can comfortably get away with 1# 100Ah 12V dc Lithium battery and 2# 300w PV if the array performs at 4kwh/kw efficiency.

limpopo:

okay, the breakdown.. I don remove some gadgets shaa

43inch TV - 80watts
sound bar --- 70watts
led bulbs (5watts) -- 8pcs -- 40 watts
decoder -- 30watts
phone chargers-- let's say 10watts(10* 5phones)--- 50watts
fans--- (4pcs *40watts)--- let's say 200watts

All the above calculation Na 470watts

So, 470watts for 8hours

Good day,

Please who can help me with specification to build a small inverter system. Inverter and two batteries. No solar in the system for now. It will all be powered by mains electricity for now. Maybe Solar will be in the picture in future.

What is important to me is that I have an inveter with like 3kva capacity, cos I plan to gradually increase the amount of batteries i have because I plan to occasionally use 1hp AC and microwave in future.

I'm asking so that I dont fall prey to unscrupulous installers.

I've read the thread but so many terminologies to catch up with.

What is a hybrid inverter?

MPP?

12v vs 24v?

What brand should I go for?

Lithium vs Lead?

So many questions.

Thanks

Valto:
still available

That inverter is badass. Happy sales.

Just arrived 300w kartel solar panels.

45k each, bulk order 43k

Call 08117398294

Chat - http:///2348117398294

free delivery for Lagos residents.

Barezzi:
APPLIANCES:
Approx. 500w (8 hours) Day time loads = 4kwh
1. 1kva 12Vdc Inverter
2. 4# 300w solar panels
3. 60A CC (Capable of charging Lead Acid or Lithium)
4a. 2# 200Ah 12V dc nominal Lead Acid bank or
4b. 2# 100Ah 12V dc nominal Lithium bank
5. Isolation and protection accessories

Energy Storage @ 12V dc nominal: (8hr DayTime Use)
400Ah @C10 - Lead Acid: 4kwh (50% - Useable = 2kwh) or
200Ah @C2 - Lithium: 2.5kwh (80% - Useable = 2kwh)

Pv Array:
4kwh generated in 4 hours of sunshine = 1000w (4# 300w panels)

Source Priority:
1. Solar
2. Battery
3. Grid
4. Gen

You can comfortably get away with 1# 100Ah 12V dc Lithium battery and 2# 300w PV if the array performs at 4kwh/kw efficiency.

Thanks for this.... I really appreciate...

the excel I saw online calculated something else though I used 350watts for 6 hours for the calculation.

find attached

ceaser:


This seems to be the whole concept behind inverter freezer too; that is, when appropriate temperature is reached and maintained for long time, consumption drops significantly.

My recently purchased inverter freezer is on a 24v system (24v100ah LFP) and I have not gotten enough comprehensive observation fit enough to file the report to this noble thread. It has held my wattmeter hostage since and so far, I have not observed that "breathtaking drop" in consumption when freezing temperatures are reached. Because of poor solar insolation at this time, the LVD device switches it off at around 5 am when the battery voltage reaches 24.2v and comes online at around 9am, so maybe I will still hold on the full comparison with the 24/7 always on non-inverter freezer for now.

NB: I realized my wattmeter may have recently been overestimating recorded consumption by as much as 12 watts. So I relied on the reading on the inverter which has been tested against at least four different appliances with good reproducibility of result.

So I recorded 102 watts on the 319L inverter freezer (nameplate 115 watts) this morning after it worked for 36hrs non-stop. Then it increased to 115 watts when a bucket of fresh unfrozen fish was put inside. One hour later, it had dropped to 113 watts.

ewizard1:

- I have a 180Ah Battery and it lasts about 15hrs depending on what i run on it which i always keep to least minimal
- Max about 500w
- Yes, @24v 1.5kva
- I have my inverter set to a Min and Max voltage operation.
- I have the Opus battery tester.
- No, its 7s100p
- I used soldering
- Physical Check + Capacity Check

Thanks a lot.
No wonder you don't need the BMS
Have ordered for a battery tester

ceaser:


NB: I realized my wattmeter may have recently been overestimating recorded consumption by as much as 12 watts. So I relied on the reading on the inverter which has been tested against at least four different appliances with good reproducibility of result.

So I recorded 102 watts on the 319L inverter freezer (nameplate 115 watts) this morning after it worked for 36hrs non-stop. Then it increased to 115 watts when a bucket of fresh unfrozen fish was put inside. One hour later, it had dropped to 113 watts.

Tell me more about that inverter freezer, thermocool? Or LG?

Morning bosses...
I have to admit, I have learnt and still learning Sha so many things on this thread After my post here yesterday..
When I woke up this morning, I decided to do addition and subtraction based on some suggestions here..

I later discovered that what I really need is 350watts for 7hours max.
So I started going through the thread from beginning, middle and end, even though the more I read, the more I get confused (first time in history.. me wey like to learn new things)..

So my Calculation goes thus;
350watts for 7hours
=2450wattshour

SOLAR PANEL =
Daily energy requirement/average sunlight/system efficiency
2450/4/0.75
=815 watts

BATTERY BANK=
Total load*days of storage/system voltage* efficiency after system losses
2450×1/12×0.8
= 255Ah

INVERTER=
350×25/100
= 90 watts
350+90 = 440watts

I DON'T KNOW ABOUT THE CC CALCULATION YET

Please, can it be safe to say all I need;
1. 900watts solar panels (3*300)
2. 255Ah 12v Battery (or should I increase it)
3. 0.5kva 12vdc inverter
4. Charger; I don't know yet
5. Accessories

Thanks to the following people for their inputs yesterday
Barezzi
ceaser
Valto
eleojo23
ojeysky

limpopo:
Morning bosses...

I DON'T KNOW ABOUT THE CC CALCULATION YET

Please, can it be safe to say all I need;
1. 900watts solar panels (3*300)
2. 255Ah 12v Battery (or should I increase it)
3. 0.5kva 12vdc inverter
4. Charger; I don't know yet
5. Accessories

simply double the highlighted, and u will have a perfect system. 700k can do this..