₦airaland Forum

Justice629:
Yes! If enough pv power is available or connected to grid

How's Calabar weather?

WILUG:
Quick question for all the gurus in the house...

I'm seriously looking at changing to lithium batteries. My challenge is the cost. I've also seen people advice that you can start small and add more later.

My questions are

1. Can multiple brands be coexist? for example, if i get a good deal on a 10kwh felicity battery today, and a deal on a 10kwh blue carbon tomorrow, can I add them?

2. can multiple power capacities coexist? say I can only afford 5kwh today, and tomorrow i'm able to buy 10 or 15kwh, can I add them together? or will I be stuck with 5kwh increments?

3. What's the maximum period between such additions? if I buy a lithium battery today, Can I add another maybe in a year or two? for tubular batteries, people usually say that it's not advisable.

Thank you.

1. YES.
There is no problem mixing different battery pack in parallel provided they have the same chemistry and voltage. LFP is LFP and gets along with its family regardless of relationship (manufacturer).
2. YES.
You can use pack with different AH ratings but there are a few things to prepare for, mostly how the EndAmps/Tail current is handled which is what takes the charger from Absorb/bulk mode to Float. If you have identical bms, it's much easier but if you mix bms, trying to match all settings and functions might be difficult.
Again, you're better off getting matched and batched grade A cells with Factory Test Reports that shows the Full Test Cycle. That way you can be certain that the cells will have an identical IR throughout the working voltage range.
3. Even after a year.

You can use

Hero2t:
Buy the capacity you can afford now and add more units later

There are new products in the markets for 12v 220ah tubular batteries @ the range of 270-300k. He can go for this if he's on tied budget.

Xtein:
Price difference is huge for lithium though. Don’t know if I can afford that.

I disagree with you.
Someone advertised quanta 12v 200ah battery (1,200wh 50% DOD) in this forum last week for 400k.
You can get a fully build 12v 130ah lithium battery (1,331wh 80% DOD) for 430k. This is for the Jbd or Daly smart bms.
If you decide to go for Jk bms with 1a balance current, then you will push your budget further to 450k.

Xanderone:
So I checked on them Monday and explained my situation. But it isn't all good news jàre. Cos of the relationship we've had for a while, they know that my appliances are on solar, so if I complain of a faulty item, they know that it's most likely a factory defect and not due to misuse or NEPA surge. They've replaced for me before FOC a 32 inch TV on warranty within 2 years.

On the AC, they said they can't take it back cos it's been installed already. But they promised to help me get a buyer in no distant time. They said something however that caught my attention. That their AC sales (demands by customers) are mostly Hisense and that before they get to sell one unit LG, they've already cleared like 10 units Hisense ACs.



OMG! 1.5hp, and it's doing 900w peak. And that my own ńa just 1hp and even though the room is well cooled, I go dey hot for inside as I see am dey chop 1000w from my much coveted battery storage. Aswear, I don seriously miss road on top this one.

Dam5reey:
These are typical Cell characteristics based on what you posted on that screenshot.
A standard 100Ah Cell has about 107AH capacity from 2.5V to 3.65V.
Rated capacity is from 3.00V to 3.400V so you have 100AH usable from this range.
I maintained this you can use up to 90% (90AH) of the capacity which means you are cycling within 3.40 V down to about 3.1V range.
Now is this advisable or not?

What some people have are 90AH being sold as 100AH, because it is close to 100Ah from 2.5V to 3.65V
Hence they cant recommend someone doing 90% from the batteries because it will mean they will discharge below 3.0V
Hope readers learnt something, I didn't mean any harm I just recall you build packs

Your advice is very well in order, Boss.
I'm always loyal

Dam5reey:
you get energy!
90% DOD is above 3.0V, you came and complicate matter!

Boss, no be energy matter be this. 90% is above 3.0v. This is a simple observation and not to look down on others. Lol

Dam5reey:
A cell Discharged at 0.5C will have a certain internal temperature due to a chemical reaction at that discharge rate.

well, that was my cells, and I use from 3.5V to 3.1V which gives me over 90%+ DOD. I don't need to post any reference, I have had my cells in good condition for over 3 years and counting, not the regular Grade B cells you guys touts around and use to make general statements!

and if you read the information on the picture you shared, you will see that 3.00v to 3.4V is where 100% capacity is, same you say don't discharge below 3.00 that is use 100% of the capacity.

Please, go back and check my post again. I didn't say we can't charge lifepo4 battery or discharge above the working voltage ranges. Whatever charging and discharging method you adopt is good for you.
On the issue of grade A and B cells, it's very wrong to look down on other people's choice. I've always being in the frontline here condemning the activities of labelling grade B cells as A or telling people we sell grade A cells when it's not. This is a faceless forum, coming here to boast about having grade A cells while others are having B is very wrong.
Drop you manufacturer test report and I will drop mine.
There is a link where we can contact EVE on Alibaba. There is also an email where we can reach out to EVE for verification.
If I see it and verify to be true, then I'll believe otherwise you're lying.

Dam5reey:
Why is it, not advisable, Una self?
A company produce Cells and simulated them, charge and discharge @0.5C from 3.65V to 2.5V and the cell came out with 3000+ Cycle and dropped to 80% capacity.
The reason una dey conservative is that most of you guys are doing packs with grade B cells that are poorly balanced and matched.
3.5V to 3.1V is 90%+ DOD. you are at ~15% when cells hits 3.2V norminal

A company produce cells and simulated them, charge and discharge @ 0.5C from 3.65v to 2.5v without data to backup your claim.
At what temperature was it charged and discharged @ 0.5C?
Drop your manufacturer test report and let's asses your grade A cells.

Dam5reey:
Chai, you initially plan to use a 600w load on Tasha.
~3 hours to 4 hours, you can use up to 90% DOD on LFP.

It's always good and advisable to have a moderate profile which keep Lfp within the working voltage ranges without stressing any cells.
Discharging below the knees of 3.0v for each cell is not really advisable.

mctfopt:
Thanks a lot, this exactly what I'd love to see; real life based experienced backed assertions. So thermocool while giving you that energy efficiency may just not cool as well as Hisense.

Is it because of this lower cooling capacity of the thermocool AC that made you replace it with Hisense? Secondly, between the Hisense and LG which of these two is more power efficient in your experience?

LG is more power efficient than the Hisense.
LG dual inverter is better than LG Smart inverter.

swagifted:
yes o. Its not brand new

That's very good but that 99m is for VIPs
The ones for ordinary people like us will arrive in 5 years time.
We're patiently waiting

:

swagifted:
99MILLION o

swagifted:
Foreign used 2019 tesla model 3.
5,000 miles
Standard range Plus version.

Do I hear you say foreign used?

Tinubu bans purchase of petrol-dependent vehicles
9 hours ago
Vanguard News

idsolar:
@Swagifted. Ur phone or wasap line make we talk iro of green cars - Toyota.

This is the only serious person I'm seeing here. I hope to join your team in the nearest future

durodee:
Solar panels, EV batteries to be manufactured in Nigeria-Tinubu https://nairametrics.com/2024/05/11/solar-panels-ev-batteries-to-be-manufactured-in-nigeria-tinubu/

Everyday promise on papers and nothing to show physically.

swagifted:
as na green car there is no special treatment, the rates de charge is same with petrol cars

Customs is loosing nothing here, just there to implement the policy by making sure that the appropriate duty is paid....... The duty should even be cheaper for the green cars but the government fiscal policy left it that way

litaninja:
I promise you, electric cars are more than battery and motors.

Your future software engineers to build the brains of the electric cars are being arrested / kidnapped by your police for owning computers and eventually leave the country frustrated sir.

Nigeria is trying to build a house from window level.

No electricity, no steel industry, no structured vocational sector to write home about, no water, no health care, no security, no roads / access to raw materials, no communication backbone but wants to jump to manufacturing electric cars. How?

Dantata, mining / processing and then what next, lithium is taken away to where value is added and then @Valto re-imports as already manufactured cells, imports manufactured BMS, puts together and sells at a markup. What next? Nigeria has been doing that for decades, still sliding backwards economically.

Auxano imports everything puts together and sells at a markup, still leaving naija net shortchanged. How does that help?

Until those fundamentals I listed earlier are sorted, the country will country dance around in the mud pit. No be curse, na fact.

Those issues will never be sorted out because our leaders are benefitted more from the current situation.

swagifted:
Electric cars na battery and electric motors... You are telling me that this two things are more complex than everything we have achieved in this country? Dantata group have just launched a lithium mining and procesing plant... That is a step... Auxano Nigeria limited assembles solar panels in Nigeria.... That is another step.... Valto for this thread de couple battery... Little steps here and there and soon we will be running. I believe in the endeavours of Patriotic citizens....some years ago i know people that never believed in solar... Steady diesel burning.... Now things have changed.... If Nigerians don't drive electric cars, our future engineers won't have one to work on and gather experience till we get it right like the chinese.

The highest we can do is to assemble and repair.
It will be very hard for us to manufacturer not because we can't do it but simple because there is no enabling environment including the negative government's policy.
Boss, there are a lot of barriers

swagifted:
Nigerian customs no get joy na why o, but this one na plug in hybrid.... When u add the range from driving on only fuel it will increase...

Wetin Nigerian customs do you?

Valto:
u should start from electric bike na just like i did. i have a hummer type electric bike , with 48v 17.5ah lithuim battery, 60km/hr speed

I never reach your level. Please I'm interested whenever you want to sell it. Lol

swagifted:
there is a charging station in apo next to dansville plaza after apo Bridge... Its inside one government auto office..... There is another one in jabi lake mall... That one six cars can charge at the same time.... There is another one in wuse 2 near exclusive Stores.... Its inside a restaurant... Sterling bank have one in lagos... Every House with socket is a potential charge point... It may be slow but its still cheaper than petrol

Nice to hear this.
When we start buying the tokumbo versions, the charging stations will spread across other states.
Please give us update on the toks versions. I reject the bicycle version in totality.

kristien4:
Does anyone have experience with flooded vs dry cell battery(Agm) which has a longer lifespan.. someone need help with deciding which to buy, dey dont want lithium.

They are the same. The issue of lifespan can only be considered when you factor in maintenance culture, quality of products like Quanta and Full river batteries gotten from an authorized dealers and not from the Alaba boys.

RickyM:
Can I use 16 pieces of 625W jinko panel with this inverter? 8 in series twice and then parallel the two pairs of 8panels together.

Though the pv Voc is unknown but I believe it should fall within the range of 51v to 53v, 8s2p config should be your best config.
Just as Dam5reey earlier said, I still suggest buying the hybrid inverter first and going through the manual before buying the pv will help us to know the best configuration that will yield better result for the system. Hybrid inverters are designed differently....
.

odimbannamdi:
Demand for Fuel following increased prices is inelastic in nature, meaning even if they sell fuel for 2000/litre today, people will still buy. But the demand will be very elastic in the future as people will actively look for and be more receptive to alternatives to fuel.

We are already seeing a lot of adoption of solar energy as an alternative to fuel for domestic application. Next in line are solar-powered or electric vehicles. One good thing this whole fuel crisis is going to do for us is eventual uncoupling or reduced dependence on fuel, at least for the transportation sector. It may look impossible, but it is doable.

I forsee an EV/solar energy company producing vehicles suitable for our market, especially as regards budget. It will definitely open up new opportunities as well.

We will start with used/tokumbo electric cars. We don't like new products in Nigeria because they don't last. Some say the new ones are too expensive. We prefer grade A used ones otherwise known as original tokumbo electric cars

Hybrid600:
This car no go wave go one side after Dangote truck speed pass am? 😁

Are there even charging stations for EV cars in 9ja Or na use of PV and NEPA?

When the big truck is coming, just clear it by the road side .
I doubt if there is any charging station in Nigeria. I'm sure people are working on that project and I'm also waiting to hear the cost and the materials used.
I guess people are charging their electric cars at home now using PV and NEPA light.
Pv is the best option
ẞom

mctfopt:
Wuling EV dey for you

This mini bus is very good for business/commercial purpose.
Please, update me when the price reduce to about $2000.

swagifted:
i have one electric bicycle for 950k...

You've finished me..... Unto poor man level, na electric bicycle I supposed drive....
God's time is the best

swagifted:
changan E-star fully electric hatch back full battery is about 32.2kwh....33 million.

Do they have 10kwh in the range of 6m for beginners like us?

Dam5reey:
Well, going by 10KWH LFP Sunking, 3.5KVA, and 4500W panels, for 11M is not bad, similar prices on Sumec Fireman, Prag, Pylontech, Fouani LG, and co.

I wouldn't conclude that the battery is too expensive and I'll only be convinced about quality when I see a practical testing/examination review for this Sunking Lfp battery.
Most of the claimed EV Automotive Grade Cells used for RE are actually the auctioned (re-labelled) reseller Grade A Cells.
We look beyond the claimed capacity of cells......
People's eyes are now opened.

durodee:
Please house help me solve this issue o. A neighbour came to my place and loved my setup . He has an hotel and he wished the following loads to be carried for 12-16hours :
All lights-about 100 pieces of 10watts
Three freezers ( I don't know Capacity but medium capacity)
27 fan -ceiling type
28 big tv - about (36inches I think)
And borehole pumping machine 1.5hp for @2-3hrs per day
I estimated 6-7kwh of load at full capacity
Na so installer brought:
12x450w panels
4x2.5kwh (10kwh total) Sunkings batteries
3.5kva inverter.

I have advised my neighbour to request for his money on, because Na fight go end that relationship!

Only the 10w bulbs, 100 pcs of them running for 11hrs from 7pm to 6am is 11kwh and 10kwh battery bank is proposed for this project?