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Solar Energy Logbook. - Technology Market (4) - Nairaland

Nairaland ForumScience/TechnologyTechnology MarketSolar Energy Logbook. (4655 Views)

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Re: Solar Energy Logbook. by Drgreatone: 7:06pm On Jun 23, 2025
Obnoxious2001:
Happy Sunday pals and oga I get plenty for here grin grin grin .

So in the spirit of technicality and sharing knowledge, I have finally decided to create a YouTube channel where I post just repair videos(while offer last) but you know Wetin weak me pass?

Na the video editing undecided, for now we just need to manage what we see cry.

By the way it's going to be purely Pidgin English for the voice over( I am obviously going to stress other folks who are not Nigerians)

Then I will also be providing a PDF free downloadable documents guiding with images every points/parts that needs to be checked.


Why have I decided to do this?

I couldn't find a Nigerian YouTube channel that successful taught repair (the technicality) we have lot explaining block diagram and all....

But I go cast everywhere for free grin meanwhile I go need still tender official apology to all the senior men whey dey the business....

But till then, you can always ask your questions and I will definitely find ways to help out if possible
Thanks boss.
So i wanna ask, I have this 2kva sms inverter that i have returned to the service center about 4 times now and same issue still remains. Its over estimating the panel input, imagine 3pcs of 300w giving out 2kw on the inverter plus batery isn't charging still. Ur help/advice would be highly appreciated.
Re: Solar Energy Logbook. by Obnoxious2001(op): 10:13pm On Jun 23, 2025
Drgreatone:
Thanks boss.
So i wanna ask, I have this 2kva sms inverter that i have returned to the service center about 4 times now and same issue still remains. Its over estimating the panel input, imagine 3pcs of 300w giving out 2kw on the inverter plus batery isn't charging still. Ur help/advice would be highly appreciated.
If it's over estimating input PV power, it's likely a sensor error tolerance fault or a microcontroller based fault (it's usually a bug in the programme)

When you say battery is not charging, do you mean it's not pushing amps?
Re: Solar Energy Logbook. by Drgreatone: 7:04pm On Jun 24, 2025
Obnoxious2001:
If it's over estimating input PV power, it's likely a sensor error tolerance fault or a microcontroller based fault (it's usually a bug in the programme)

When you say battery is not charging, do you mean it's not pushing amps?
Battery got drained while supposedly charging with the inverter.
Re: Solar Energy Logbook. by Tdoctor(m): 8:26am On Jul 17, 2025
Good morning. I am having a problem with my victron 150/45 MPPT. It's showing error #40 input internal error. I was asked to contact you. Looking forward to your response
Re: Solar Energy Logbook. by 3ace(m): 9:15pm On Jul 23, 2025
Obnoxious2001:
If it's over estimating input PV power, it's likely a sensor error tolerance fault or a microcontroller based fault (it's usually a bug in the programme)

When you say battery is not charging, do you mean it's not pushing amps?
Hi chief, please I need your advice. Can a 4kva 48v inverter work with three 220ah 12v tubular batteries? If four batteries are compulsory for the setup as suggested by a friend, can I just buy a new 220ah 12v tubular battery and add it to the three batteries? Note that the three other batteries are fairly used for two years but still has a decent power backup. I hope combining old and new batteries will not speedily wear out the new one.
Re: Solar Energy Logbook. by Obnoxious2001(op): 10:54pm On Jul 23, 2025
3ace:
Hi chief, please I need your advice. Can a 4kva 48v inverter work with three 220ah 12v tubular batteries? If four batteries are compulsory for the setup as suggested by a friend, can I just buy a new 220ah 12v tubular battery and add it to the three batteries? Note that the three other batteries are fairly used for two years but still has a decent power backup. I hope combining old and new batteries will not speedily wear out the new one.
The old ones will pull down the new one to its owns internal resistance (the capacity of the previously acquired 3 might have reduced)

Since the inverter is 48v(it will require 4 batteries in series) where as, the 3 batteries in series will only give you 36v.

If the inverter even manage to work, it will not output the complete AC voltage.
Re: Solar Energy Logbook. by 3ace(m):
Obnoxious2001:
The old ones will pull down the new one to its owns internal resistance (the capacity of the previously acquired 3 might have reduced)

Since the inverter is 48v(it will require 4 batteries in series) where as, the 3 batteries in series will only give you 36v.

If the inverter even manage to work, it will not output the complete AC voltage.
Good afternoon boss, thank you for your swift response yesterday. Let me give you a little back story. Those three used batteries were given to me and that gesture stimulated my interest in installing an inverter. Appliances to power are plasma TV, dstv decoder, 3 ceiling fans, deep freezer and five 5 watts bulbs(although all these appliances will not be used at the same time). The plasma and the freezer(140w) are the reason why I'm considering a 4kva 48v inverter. But with your comment about adding a new battery(for series connection) which will negatively impact its performance because the other batteries are used, should I downgrade the inverter to 2.5kva 24v so that the 3 used batteries can be run in parallel and series connections to make 24v? Would this setup still power the above appliances? Which inverter model would you suggest? Note that the system will be charged with the grid and sometimes, generator(3.5kva)-no panels.
Re: Solar Energy Logbook. by Obnoxious2001(op): 5:28pm On Jul 24, 2025
3ace:
Good afternoon boss, thank you for your swift response yesterday. Let me give you a little back story. Those three used batteries were given to me and that gesture stimulated my interest in installing an inverter. Appliances to power are plasma TV, dstv decoder, 3 ceiling fans, deep freezer and five 5 watts bulbs(although all these appliances will not be used at the same time). The plasma and the freezer(140w) are the reason why I'm considering a 4kva 48v inverter. But with your comment about adding a new battery(for series connection) which will negatively impact its performance because the other batteries are used, should I downgrade the inverter to 2.5kva 24v so that the 3 used batteries can be run in parallel and series connections to make 24v? Would this setup still power the above appliances? Which inverter model would you suggest? Note that the system will be charged with the grid and sometimes, generator(3.5kva)-no panels.
Get a 12v sachet inverter and a separate charger, it is easier to manage and has low entry cost.

Just incase their might be need to upgrade, it's easier to sell off the inverter (You can work on a swap deal if you buy from people on this thread), battery(obviously can be sold as scrap) and even charger(charger might be what may take a longer time anyway).

If you decide to use a 24v setup, you will be forced to use just 2 units of those batteries or you but an extra one and add to the one not in use
Re: Solar Energy Logbook. by Blissfularray: 2:43am On Jul 25, 2025
Obnoxious2001:
Get a 12v sachet inverter and a separate charger, it is easier to manage and has low entry cost.

Just incase their might be need to upgrade, it's easier to sell off the inverter (You can work on a swap deal if you buy from people on this thread), battery(obviously can be sold as scrap) and even charger(charger might be what may take a longer time anyway).

If you decide to use a 24v setup, you will be forced to use just 2 units of those batteries or you but an extra one and add to the one not in use
Your contact details is in Morse code.

I've been trying to decode it for several days now.

I need to reach out to you soonest.


'lie, lie lie' is where the problem seems to be.
Re: Solar Energy Logbook. by Obnoxious2001(op): 3:38am On Jul 25, 2025
Blissfularray:
Your contact details is in Morse code.

I've been trying to decode it for several days now.

I need to reach out to you soonest.


'lie, lie lie' is where the problem seems to be.
999
Re: Solar Energy Logbook. by 3ace(m): 5:40am On Jul 25, 2025
Obnoxious2001:
Get a 12v sachet inverter and a separate charger, it is easier to manage and has low entry cost.

Just incase their might be need to upgrade, it's easier to sell off the inverter (You can work on a swap deal if you buy from people on this thread), battery(obviously can be sold as scrap) and even charger(charger might be what may take a longer time anyway).

If you decide to use a 24v setup, you will be forced to use just 2 units of those batteries or you but an extra one and add to the one not in use
Thank you so much. I really appreciate-I’ll work on this.
Re: Solar Energy Logbook. by Obnoxious2001(op): 8:10am On Jan 01
Happy new year.
Welcome to a new phase smiley
Re: Solar Energy Logbook. by Obnoxious2001(op): 5:58pm On Jan 27
Time to review this thread undecided.

I don get small chance now grin
Re: Solar Energy Logbook. by Thazard(m): 7:45pm On Jan 31
Obnoxious2001:
This is just a simple logbook kind of post. The aim is actually to help me keep stock of solar gig, installation and problems that am able to attend to.

I will as much as possible try to be very honest. though my methods might be questionable, but yeah am open to critism.

By the way I was thinking, is this thread category not supposed to fall under dairy undecided
Hello please can 300k sort out solar solution for charging appliances, light bulbs and fans?
Re: Solar Energy Logbook. by Obnoxious2001(op): 10:48pm On Jan 31
Thazard:
Hello please can 300k sort out solar solution for charging appliances, light bulbs and fans?
Yes.
If you can do it yourself (diy) and manage your expectations.

I have attached a picture of a set up that cost around 300k(less than 300k around 250k).

It consists of a ups, battery, charge controller, solar panel and an external charger

Re: Solar Energy Logbook. by Obnoxious2001(op): 10:52pm On Jan 31
Thazard:
Hello please can 300k sort out solar solution for charging appliances, light bulbs and fans?
By the way I don't really know how much load you intend to run,

But the 300k will likely get you a back up of less than 500wh
Re: Solar Energy Logbook. by Thazard(m): 10:54pm On Jan 31
Obnoxious2001:
Yes.
If you can do it yourself (diy) and manage your expectations.

I have attached a picture of a set up that cost around 300k(less than 300k around 250k).

It consists of a ups, battery, charge controller, solar panel and an external charger
Sorry if what I'm about to ask you is unprofessional but please can you help me list the specific items to get and how to connect them?
Re: Solar Energy Logbook. by Obnoxious2001(op): 11:22pm On Jan 31
Thazard:
Sorry if what I'm about to ask you is unprofessional but please can you help me list the specific items to get and how to connect them?
Sure
1. 300w Solar panels less less than 35k for fairly used within Lagos State.

2. Satchet inverter around 40k
(If you have ups, it saves you more money)

3. Battery, BMS and casing budget 120k

4. Charge controller & external charger around 60k

5. Cables and other peripheral & unforeseen expenditure can be offset with the remaining balance.

Meanwhile you can follow this thread for battery building
https://www.nairaland.com/7902446/diy-lithium-ion-like-minds
Re: Solar Energy Logbook. by Obnoxious2001(op): 7:34am On May 13
Drgreatone:
Thanks boss.
So i wanna ask, I have this 2kva sms inverter that i have returned to the service center about 4 times now and same issue still remains. Its over estimating the panel input, imagine 3pcs of 300w giving out 2kw on the inverter plus batery isn't charging still. Ur help/advice would be highly appreciated.
Boss greetings sir.

Please try reaching me on offline call.
I couldnt find your contact
Re: Solar Energy Logbook. by Obnoxious2001(op): 3:30pm On Jun 11
New generation of hybrid inverter flooding the market

Just putting this out purely for documentation.

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