₦airaland Forum

TCD:
Hello Chief.
I'm curious. If batteries have short shelf life, how do manufacturers and sellers store them in their stock before sale which may take months?

That's why some batteries fail prematurely even when you buy them as New, dead of long storage!

Xanderone:
Hi. Please can I get the link for this "Sako" guys? I want to check it their solar panel offerings and prices.

I'm hearing of them for the first time though.

oh my, see how product reviews turn advertisement for SAKO .
It was shared here
https://www.nairaland.com/390522/solar-energy-complement-fta/1675#129600884

Parser:
Sounds good. Pls how much did you get your Sako and the panels. Can you give us a breakdown of the cost implication of your setup. Are you using Lithium of Lead.

2 Million Naira, 24V 3KVA Inverter, 4X 410W panels, 5KWH LFP pack. all Sako
check the previous post for Sako details, prices are not fixed.

jonescosmos:
Abeg make una help me look at this again, maybe na my eye dey pain me or some cells are hidden under that bar. If so, who would do such a DIY? Anything that would cross the terminals of a battery cell is bad, no matter how insulated you might make it. Except say that Bar na plastic.

It's obvious that cells were under the bar, that space cannot be empty, because all cells are welded.
Its to hold the cells from moving around.

[quote author=jonescosmos post=129770407][/quote]its left side has 2p8s, right side 2p6s.. that's 28 cells, there was a cell holder at the center of the pack. Note, that these are laser-welded packs.

mctfopt:
Whosoever goes to this location should update us on how this abracadabra was done as I've asked this same question.

Did they do 16s and decided to run 8 cells in parallel to 8 leaving out 8 cells with no parallel?

Interesting what some DIY has under the hood the main reason I do ALL MY DIY from beginning to end.

there is no Abracadra here, he is running 2p14s. that's a 14s NMC cells

there are several types of Lithium packs. 48V
Li-on/NMC - 14s
LFP - 15s (48V) 16s (51.2)
LTO - 20s
Sodium ion -15s

odimbannamdi:
What is/are the function(s) of the AVR/current limiter in this particular setupm

Attached is one of the functions.
its a Voltage regulator, Current limiter, Grid Delay, volt and current meter, and shortcircut protection.

zeestone99:
I hope you have Avr/current limiter installed sir

Dem no dey tell person oo, I just dey observe am.

Amador1:
Hello good morning everyone.
I’ve just spoken to the Jos guy this morning and he said I should take the battery to someone on his team here in Lagos to help check it out. He has sent me the persons numer.
I Will be updating the group on the outcome. Thanks to everyone for their concern and advice.

perfect

Amador1:
Hello good morning everyone. Please I need you advise.
Yesterday I noticed the display on my battery was blank and immediately I opened the jk bms app on my phone and attached is the screenshot what i saw. Since yesterday my battery has refused to charge and I don’t know what to do. I got the battery from the Jos guy two years ago and I’ve messaged him on WhatsApp and tried calling him too but he’s not responding. The battery is reading low voltage on my inverter now but on the jk app the battery voltage is high.

What voltage is the Inverter displaying?
wait on Jos guy to also reply, he might be busy.

One Cell is high than your Charge Mosfet is OFF, so no matter what BMS wont allow Charge, so allow the batteries discharge.

Danibestguy:
Wow. Abeg what's the Voc of the panels and how many panels?

I provide on pages back..

Danibestguy:
So, no need for me to have the nominal voltage of 240dc? Na the nominal dey gimme headache.
See this data sheet as well. According to this data sheet, I can even use the inverter with just a panel right?

I have shown you a picture where charging is well with 113V and even less.
and 1.64KW panel deliver 1.47KW at that 111V..
so your 240V nominal headache I don't understand

swagifted:
to be honest , if nigeria had net metering and the grid was highly reliable and also the agreement is 1kwh for 1kwh (i supply the grid 1kwh with my solar in the afternoon and the grid gives me back the 1kwh in the night), i will not take a hybrid over an ON grid inverter, the grid is essentially my battery so why spend so much on batteries?....as much as i love hybrids(because nepa too de take light), they don't last as long as on grids only.

your Don't last is too generic. Provide detailed information.

Danibestguy:
Alright. Thanks.
But can 2 500w panels start those inverters? If it can, will it charge at all?

There are low Voltage MPPT and there are High Voltage MPPT.
you select based on your needs.

there is 100V MPPT, 2 panels works
150V MPPT, 2 panel works
30-400v MPPT, 2 panels works
60 - 450v MPPT, 2 panels works
90v - 450v MPPT 4 panels or more
120-450v MPPT 6 panels or more.

options plenty.

Jefferyzz:
2 440w - 260k
1 powmr mppt - 103k
3000w easure sachet inverter - 92k
Cables n odas - 70k
Transport - 10-20k
This is most likely Ur cheapest route

so he won't use grid or charge with the grid?
he will have to use ATS or changeover just like generator

Danibestguy:
Hello. I have a 24v 100ah lifepo4 battery.
Constant load - 240w which is just a fridge and a fan.
I want to get an inverter to match it. I'm also planning on getting panels later on.
Please note that we get up to 8hrs of grid light daily.
Is it advisable to get an hybrid inverter ?
Considering that I'm staying in a rented apartment(limited space), will 2 500/550w panels in series be enough?


Budget is 500k.

Hybrids are here to stay and have stood the test of time already. why are people still contemplating?
Hybrid gives you an Inverter, Charger, and MPPT, cheaper than any standalone.

example with 250K. you can have
a 3kva inverter with 60A charger,
80A MPPT, go and price stand-alone equivalent.

Hybrid allows you to customize slightly when grid charge, how much grid charge, when Solarcharge, Only Solar charge during the day and Grid charge in the night, etc. with standalone, you need to have good know-how and other tools to achieve these.

Eagba:
Please house I need answers er with this;
My wife is running on a budget, so she's thinking of getting solar panels for charging to complement her pos bizness.
Now the thing is, she want to know if she can get only solar, no batteries and maybe charge controller for charging of customers phones and devices.
Thanks sirs and mas

You want to charge 25 phones simultaneously, that's 250 watts of energy if each phone takes 10w. that's base charging 2A 5V.
Plan at least a small battery to serve as a buffer for cloudy periods.
Plan for LFP backup 12V, 50AH, or lead acid 12V 100AH will do for a start.
500w Sachet inverter, you can't run DC-DC due to the number of phones.
12V 60A PWM charge controller,
2PC of 180W Solar panel.
with 500K you will reach somewhere!

durodee:
I am not aware that CC goes bad because it was not used for a number of years.
It does not have an internal Battery that runs flat or anything like that.

Once they gather dust, you will see rust and all.

obinna37:
I'm not doubting you,the guy himself just they reason where him go see #150k to buy one more panel now, already his plan is to buy three panel, but due to finance,he decided to mount this two, maybe later he add the remaining one,now the two no work.abeg our elders in the house make ona put mouth for this matter and help a brother

Sorry I was in a rush to reply without complete information, I have attached the manual showing how many panels he needs, he can push for one more panel.

obinna37:
pls tell me it's true,he should add one panel,I don even tell him,he will need more four panel,my guy cut phone for hear

he should check what his manual says if in doubt..
this is the manual attached.
they used minimum 4 panels 250watts, of 30Vmp.. meaning 4 X 30 = 120V..
the 545 has more than 40Vmp X 3 is 120V.

bbally:
He needs panels in series that will produce 260v and above, that's the disadvantage of these HV hybrid inverter compare to the standalone CC for small size installation.

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

obinna37:
My friend hybrid solar inverter is 3.2KW, its nominal operating voltage are 240VDC, he has 2 solar panels of 545W which produces 96V, but batteries are not getting charged, what is the issue?I told him to add more solar panel

This model required 120V... If he adds one more 545W it will work fine.

the 30-400V type works with 1Panel..

Danibestguy:
I'm about dealing with them(a rep on the flier) to send it over to my location. Just a bit sceptical.

I was at their Physical Warehouse anyway, they have the product and will use a logistics company to send your goods, they assume how things are done in China, and they use Speedaf, If you have ordered something from China and got through Speedaf you will understand.
Still, perform your due diligence I do not have affiliation with them.

Danibestguy:
Did you deal remotely or you went there physically to pick the products up?

Both!
you can contact them for more information, I am not a marketer, lol

Danibestguy:
Can you share your contact?

It was shared here
https://www.nairaland.com/390522/solar-energy-complement-fta/1675#129600884

Sapiosexuality:
That means I have to sell it. Got from Odinnamdi more than a year or so ago but yet to use it. Power Mr 60A.

You may keep it anyways,but if the cost may be needed for the upgrade, sell it.

Danibestguy:
What is the max voltage of each panels

410W
VMP 31.36V Imp 13.08A
VOC 37.32 ISC 14.00A
108 half cell

Danibestguy:
What was the configuration of the panels you used?

Sako 410w, 4s configuration. 1640W total capacity

Sapiosexuality:
I've been seeing some very high prices here and it made me take it out of my order of things. For this 2.5 KVA 24v hybrid system, do I still need my old MPPT charge controller or it's inbuilt into the inverter? Thanks.

The inbuilt Solar charge controller is more suitable as it is 80A.

luvlyoracle:
Just asking if you use all these dumb inverters without editable settings and you don’t have solar what’s the best way to charge your lithium battery.
Would really appreciate y’all input it’s been giving me issues lately

External charge controller.

Deluxe8000:
Shomolu, bariga, yaba area installer with[b] 2s2p experience needed.[/b]
Zero 7zero3eight9nine9three6three

Interesting requirement.