NewStats: 3,263,450 , 8,180,177 topics. Date: Friday, 06 June 2025 at 12:36 AM 4l3ue

This is what I fear the most. Imagine spending millions of naira then one so called professional come mess your work up

bassdow:


How do you know.

Speaking of professional, the meaning of that word "professional" has really been diluted.
Currently in talk with a landlord who's been replacing batteriies and upgrading one thing or the other. Met him recenty, have known him for over 2-yyears but since he's a distant neigbour (12-streets away), our interaction is just greeting, though I sometimes buy things from their shop.

Something happened recently that brought us a bit closer, but before then, while buying something from their shop, already asked the wife why they run their freezer on solar (since I could see 2 small s on the roof), and would kill the battteries faster BUT she said No, that there are more s at other side of the roof. I argued a bit but left it at that.

Later (probably 1-month later) I got to learn of issues from the husband because He's been battling solar wahala.
Asking him, He gladly told me the individual capacities of all the s on his roof as 2pcs 150watts, and 2pcs 250watts and I was like wow. Did you install yourself and He said No, An installer bought and installed them, though they both went to the market to buy them.

I was like, what sort of installer is that that would do such rubbish job.

He said He heard from his wife that I know about solar, and that what I said about their solar seems true.

Further asking, i got to discover He has had to upgrade his inverter from 12-volts to 24-volts, upgrade his charge controller from PWM to MPPT. I was like wowww.

Further asking him while we were walking back since we met on the way, revealed that initially, he bought 1pcs brand new 200AH dryCell battery but when it became weak, he was adviced to buy another and add to it, so they bought a used 200Ah battery, and paired it in series to the already weak battery and again, I shouted in surprise, asking him Are you sure You are not the one who installed all these things to which hee asked would he lie to me.

So he begged I come next day to take a look and fix things. He somehow had faith in me despite not seeing anything i have done before. Just that, most things I said earlier without knowing anything about their setup was more than true + since I am like a ghost in my vicinity, people barely knows Me. if you don't see me By, you hardly would see me again till maybe I By aggain and e no dey greetings and I don waka.

Well next morning, I came and was just speechless. The charge controller of 140,000 naira was a used one with MPPT bolded written on it. it's very obvious it's been opened for repairs. it's equally obious it ain't MPPT.
Now the 2 batteries were 1 fake brand (alaba battery) and was bought brand new, the other was Ritar and was bought used.

i told him, even a secondary School student who ready physics knows you don't mix old and new battery, let alone this kind of nonesense.

At end of the day, made him realise the entire setuup was rubbish and the batteries would keep dying because the solar s are too small to fully charge the batteriies.

When I told him the battery has never filled, he disagreed but when He asked the wife, She said battery bar indicator keeps moving till 7pm when there's no more sun and it stops. And I told him that confirms the batteires are never fully charged.

Later he called the person and put phone on speak annd asked how much he solld the second MPPT charge controller and the man said 145,000 naira. he said he was making recommendations to a friend and wanted him to hear the price himself.

Right now, the man is just speechless. They no longer uuse freezer on it. Just 1 Tv with 1 standing fan and some energy saving bulbs, yet as soon as the sun is out, the inverter doesnt take up to 2-hours to start making noise. the next it goes off.

Now the man is making plans to start all over again. Just this time around, he wouldn't go through them

Penuelseun:
Do you have a multimeter? There is still a way to balance the cells manually

no I don’t Never thought I would have any need for it.

Amador1:

No I don’t have a voltage meter with me except I ask around or I place an order for one.
My location is Lagos surulere

Okay, you can reach out on 23481-323-94478, you don't need to buy.

I can help check if you don't get response from the pack builder.

Dam5reey1:


Okay, you can reach out on 23481-323-94478, you don't need to buy.

I can help check if you don't get response from the pack builder.

To collect money dey good, but na when issues arise we go know who be who.

Anything you sell, always have means to offer one way or another.

Emmypam:
PLEASE HELP
I have a 1KVA Hybrid inverter, it comes with 30 amps charge controller. I also have a 220Ah battery.
I use a total load of 100-150 watts
I'm planning on getting 200 watts s to enable me charge my battery to 100% daily, how many 200 watts s would i need?

I guess you have a PWM 30A controller

You can get 3 or 4, 150watt s, you need a with 17/18V VMP.
200w may not be suitable.

Amador1:

I’ve opened the battery and these are the pictures I took before closing it back. Please if anyone knows where Or who can help get it fixed, please do recommend. I have to revert back to my generator now in this current fuel scarcity wahala.

I have this same BMS, I see 24 batteries, I'm interested to know what voltage you running. If it's 48v, how did he pull it off with 24 batteries?

Side note: BMS cable management is too poor.

Dam5reey1:


I guess you have a PWM 30A controller

You can get 3 or 4, 150watt s, you need a with 17/18V VMP.
200w may not be suitable.

it's a PWM 60A charge controller.
If i may ask, why won't 200 watts be suitable? Because i already have bought two 200 watts few months back

Dam5reey1:


Okay, you can reach out on 23481-323-94478, you don't need to buy.

I can help check if you don't get response from the pack builder.

Okay thanks a lot. Let me wait till this weekend to see if he will reply or not so that later he won’t come online and say I was impatient. Will give you a call first thing next week if he doesn’t respond. Once again thanks a lot

TechGeek777:


To collect money dey good, but na when issues arise we go know who be who.

Anything you sell, always have means to offer one way or another.

Exactly Why people still prefer patronizing known companies like Felicity

mctfopt:


I have this same BMS, I see 24 batteries, I'm interested to know what voltage you running. If it's 48v, how did he pull it off with 24 batteries?

Side note: BMS cable management is too poor.

It’s 48v. On the battery I have “charging upper limit - 58vdc ~ 58.5vdc” written on the sticker pasted on it. He also advised that I set my inverter charge settings to 57.5v and that’s what I’ve been using since I got the battery

24v 4KWh battery from isangjohnson.

So far so good.

Emmypam:
it's a PWM 60A charge controller.
If i may ask, why won't 200 watts be suitable? Because i already have bought two 200 watts few months back

Your information self, you said 30A, and planning 200w.. now it's 60A, and you have 2, 200w already na wa oo.

Anyways you need a with 17/18V VMP for best efficiency. If your 200w is similar then it's fine.
Post the spec sheet.

Amador1:

Okay thanks a lot. Let me wait till this weekend to see if he will reply or not so that later he won’t come online and say I was impatient. Will give you a call first thing next week if he doesn’t respond. Once again thanks a lot

Hence my response, I believe he will reply, just be patient.

Dam5reey1:


Hence my response, I believe he will reply, just be patient.

If na payment him want receive, he for don reply since.

Most Nigerian sellers almost get same attitude.

Amador1:

It’s 48v. On the battery I have “charging upper limit - 58vdc ~ 58.5vdc” written on the sticker pasted on it. He also advised that I set my inverter charge settings to 57.5v and that’s what I’ve been using since I got the battery

Reach out to the man who dropped his so he can help. I hate when people who DIY for people don't do the right thing.

TechGeek777:


If na payment him want receive, he for don reply since.

Most Nigerian sellers almost get same attitude.

Very fast for payment like you know who here

But when it comes to deliver on warranty or even do small customer care it'll be taking them days to reply your chat.

oh, we definitely know who

mctfopt:


Very fast for payment like you know who here

But when it comes to deliver on warranty or even do small customer care it'll be taking them days to reply your chat.

mctfopt:


Very fast for payment like you know who here

But when it comes to deliver on warranty or even do small customer care it'll be taking them days to reply your chat.

My brother, na nasty attitude be that.

It's well.

litaninja:
oh, we definitely know who

You mean 101% Ready to Purchase man?

I have bought four packs in all from him over the years. Transactions were unpressured and he responded to the issues with one of the packs as professionally as possible. Sometime he will be offline for days, placing a normal call or text message will make him check his whatsapp.
We all have our peculiarities and while he is the best person to explain his actions in this case, "quick-grab-money " attitude is not one of his vices!.
Is it possible he is on site outside network area?

TechGeek777:


If na payment him want receive, he for don reply since.

Most Nigerian sellers almost get same attitude.

durodee:
I have bought four packs in all from him over the years. Transactions were unpressured and he responded to the issues with one of the packs as professionally as possible. Sometime he will be offline for days, placing a normal call or text message will make him check his whatsapp.
We all have our peculiarities and while he is the best person to explain his actions in this case, "quick-grab-money " attitude is not one of his vices!.
Is it possible he is on site outside network area?

If this is the case then our assumptions might be wrong.

Why OP no call him?

Amador1:

I’ve opened the battery and these are the pictures I took before closing it back. Please if anyone knows where Or who can help get it fixed, please do recommend. I have to revert back to my generator now in this current fuel scarcity wahala.

These are definitely used lithium ion cells, as i surmised earlier..josboy has a thing for them ..
Chk that each of the 14 bms cell leads are tight and firmly attached to the cell pair...though from the resistance values..they appear to be.

I suspect a failing bms...does the bms have an ON bitton?.
U can try power it down/disconnecting the sense and power leads and then powering it back up again..
I dentify the cells reading above 4.2v and attach a car headlight bulb to it..for 10 to 20 mins....that wud drain the energy to acceptable values...allowing the charge and discharge fxn of the bms....then connect the inverter to it and observe.

If the bms has failed..then a simple bms swap shud get u back and running again

Amador1:

I’ve opened the battery and these are the pictures I took before closing it back. Please if anyone knows where Or who can help get it fixed, please do recommend. I have to revert back to my generator now in this current fuel scarcity wahala.

Well, you are lucky that this didn't cause a fire outbreak before it shut you off.

The cable management i just saw is the worse i have ever seen in any DIY, Please know it that just water does not put out Battery Fire oooo.
Any of those web of wires could have snapped, bridged or even be having partial .
By the way, you have got 24 cells in total, some 2 cells are paired connection and some cells are single, i am wondering how you want to achieve a 16S setup with this. I also doubt these cell are new neither are they LiFePo4 Cells. I thought we are DOING IT OURSELVES because we are trying not to fall prey to China's deceptions, then what the hell did I just see here?

I appeal to someone who is within this guys proximity to go rescue this looming calamity ASAP. At least trace out them wires and Zip tie all the cables neatly.
It would have been better to package a (16s + BMS) + (16s + BMS) or even a (16S2P + BMS ) than this setup you have. that

Dam5reey:


Not 260V.
we have High voltage starting at 36V now.
this is Sako 1.64KW watts s producing 1.43KW with only 4 s rated at 31Vmp
total input is 113V from PV

What brand of s are these? And what time of the day was this taken?

Amador1:

I’ve opened the battery and these are the pictures I took before closing it back. Please if anyone knows where Or who can help get it fixed, please do recommend. I have to revert back to my generator now in this current fuel scarcity wahala.

I think there are 28 cells there, the others are hidden under that bar

M

Eagba:

Thanks , but remove the battery in this equation. Is there a way around?
Let cloudy day be cloudy.

Put a battery. You could damage a phone or something if you don't.

Running a DC fan off PV directly is a totally different case from charging phones off of PV only. Not to talk of multiple phones

Emdee590:
This is what I fear the most. Imagine spending millions of naira then one so called professional come mess your work up

that is my worry too

Emdee590:
This is what I fear the most. Imagine spending millions of naira then one so called professional come mess your work up

The landlord has a share of the problems too. Whenever I hear or read about a client that went with an Installer to market, or went to market themselves and then wants an installer to come install, especially when the client has little to no knowledge of market tricks or installation experience, I just feel they are setting themselves up for trouble.

I recently had a client that wanted to install a 5kva, 15kwh lithium system. I was recommended to him.

I went there did audit, discussed different options bla bla bla. I drew up three different quotes later and sent to this guy, after days of market searching and what not.

After sending him the quotes, my guy said he has run low on cash and is waiting for salary for the month. Month end camd and went still no response, so I sent some messages but he didn't reply after reading my messages. I ed the wife to ask if he was ok, she said yes that he is just having car issues and is repairing it. I was wondering why car problems will make you not reply simple Whatsapp chat.

I just went silent and went about my normal life.

Few days later, baba called that he is in Alaba, he has gotten the battery, the inverter, this, that...I was like 😳...then he said he wants to pick up s that should speak with tye seller to confirm if they are original etc. I turned down the request that's I don't do that, especially since that is someone's business and I didn't direct him there.

Long story short, he bought fake s (likely 250w rebadged as 400w), over priced protection devices setup, not very original PV cables etc etc. At the end of the day, he was still complaining that he spent more than his budget. I just 🤐

Trippledots:


Put a battery. You could damage a phone or something if you don't.

Running a DC fan off PV directly is a totally different case from charging phones off of PV only. Not to talk of multiple phones

ok now I understand

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Emmypam:
it's a PWM 60A charge controller.
If i may ask, why won't 200 watts be suitable? Because i already have bought two 200 watts few months back

200w is a 24V s, with voltage between 31.5v to 36v. The best way to charge battery with pwm charge controller is to keep the voltage battery voltage to avoid power losses hence 80w-180w s are recommended for a 12v system. But if the charge controller is mppt you are good to go.