₦airaland Forum

generationz:
What's the difference between 12v, 24v and 48v?

Nominal battery voltages that most DC systems are built around.

GeorgeD1:
bro,
firstly, we all know that c rating (as regards battery capacity) is the safest maximum continuous discharge rate the battery
will support.
a carefully calibrated load is applied until the voltage gradually depletes to 1.75v/cell (lead acid) or 1.0v/cell (nicd/nimh)
and 3.0v/cell (for li-ion}
having said that, while i wouldn't want to pick holes in trojan's claims, i do understand that battery c ratings and capacity
are not cast in stone.
for instance take the case of two batteries with 200ah c10 and 200ah c20 respectively. the first battery with a capacity and
rating of 200ah c10 may turn out to be actually 250ah when discharged at c20 depending on battery chemistry and quality
of materials used to produce it while at c100 it could go higher to 320ah in capacity as an example.
i do see most of our sellers here bandying all sorts of batteries for sale. they put out a lot of info but leave out the most
relevant which is the c rating of the battery. i guess they are either ignorant themselves or perhaps they are feeding fat on
the ignorance of potential customers. if i buy a c100 rated 200ah battery unknowingly thinking it is c20, i'm invariably
buying a 170ah battery. no wonder many peeps here keep complaining of dead battery after just a few months of usage.

You are 101% correct...the same way lithium chemistry battery sellers quote capacity of battery in mAh and deftly hide the working voltage of the system...

eleojo23:
Ok, but the 50% DOD rule still applies to all regardless of C rating?

Yup

For those of us looking at cheap alternatives in getting Lithium DIY cells. This video may be useful.
https://youtu.be/6Ai5IRQbLcc

eleojo23:
I've been trying to understand the difference between this C10 and C20 stuff. I've read some conflicting and vague info about it online.

Can the gurus please explain which is better and why?

From my understanding, the lesser the C rating of a battery the more durable it is, as regards deep discharge. Ie it handles higher currents without much effect to the battery itself.

Usually the thickness of plates, quality of material used, total surface area or electrodes and some finer details used to make the Insides of a LA battery determines how it performs with regards to high charge/discharge. This tranlates into its C rating.

earthrealm:
Ship freight
Alibaba prices.
The price no good??
Abeg gimme link for cheaper prices

The group buy doesnt have any comparative advantage/savings as seller doesnt offer serious discount, on the projected quantities we would be purchasing....
, so i would [b]suggest all man for himself ;[/b]D ..... This is nigeria, its a bit unnerving giving a faceless stranger upto 500k, and waiting for 3months or more b4 knowing if you hv been defrauded or not

Edited again

We can still create the whatsapp group to assist with links and suggestions.

stevebond007:
Thanks.
Which battery do you recommend?

We use Shoto brand and Narada.

stevebond007:
Thanks.
Which battery do you recommend?

We use Shoto brand.

Onyeka90210 what's going on bro?...no need to spam na.....be like you stubborn small for real life o

Guys, I have transacted with him before and the transaction went well. I'm not saying what he is doing is ok? But atleast I know he is actually selling stuff.

Peace

Ojukokoro will not kee me...

So I saw a deal of an Eastman 850va, 12v inverter and 2×100ahr Double tech batteries few months used, for less than 120k.

I grab am, because reason for disposal was due to system upgrade of the previous owner.

Well, I just took delivery and I discovered that the self consumption, on no load is about 25watts!

Summary of this message be say, I WAN SELL ONLY INVERTER O....I never even install am yet.

Asking prize is 45k. (Slightly negotiable)

INVERTER has LCD screen, shows real time load percentage, inbuilt charger, etc etc.

Reason for my own disposal is that, my system is very small, my 600Wp PV installation is also heavily shaded and this inverter will simply be wasting energy for me...

Hit signature let's talk.

Update SOLD

Valto:
dem say, dem de know taste of shit from the smell of fart
i advertised 8pcs for several weeks here, which was even negotiable and yet there was no serious interest on it.is it when i tied down serious funds on several quantities for complete 4 to 5months, that buyers will line up? let me come and be going >>>

Lol..
Dis analogy mad gan.

stevebond007:
Thanks sir.


techfine 3.5kva inverter 150000
200ah techfine ba3. 12v (4) 480,000
solar panel (12). 360,000
solar charge controller. 100,000
surge protector. 60,000
earthing. 40,000
kits. 60,000
service charge. 40,000
cabinet for battery. 45,000

total. #1,335,000

All the places we use techfine batteries as stop gap replacement, in the past 6months have either packed up or are limping, waiting to be decommissioned.

They saw about 50%DoD, C3 to C4 max discharge rates....
There was enough solar and Diesel gen backup to ensure DoD was adhered to.

These were 1000ahr/2v cells anyway.

Maybe that info will help in your decision making.

tonididdy:
How to identify authentic distilled water fams?
Or can one just use any water


(These products in the market are scary).
Pls contribute

Due to nature of my job I can actually get some guys to harvest ac drain water for you. At a little token too, and gallon and transport on you oh. I think I saw some gallons of distilled water already collected sef.

If you are interested or anyone else for that matter, hala me at my signature.

earthrealm:
So the following have indicated interest.

1. odimbannamdi
2. Adrusa
3. Trippledots
4. earthrealm. 48v 400ah to 500ah
.
Lets reply with proposed sizr of batt bank required.
We can wait till say 10days time to see if more people would join.meanwhile, we can choose our cordinator and co cordinator..
We can then take it off forum and finetune detals

I'm looking at 24v / 300ah-400ah. Depending on total cost price.

BrickDevo:
Still selling

Hit my signature lets talk on whatsapp...I'm close to agor

earthrealm:
2 or 3 trusted people is enuff for the group buy. Is the shipper on nairaland?
Care to share his name?

Nope, do I share their contact with you? Maybe hit my whatsapp from link below let's talk there..

I have used tugrow also who is on nl and is an old timer here. He is quite reliable but delays with EDD sometimes.

JUO:
just turn the raw egg into the radiator and that will be end to leaks

E no go smell? That's like having cooked egg debris floating in your engine coolant.

earthrealm:
First, we need to locate a good, trusted, reliable and efficient china shipper.
Anybody knows any shipper that fits the bill?

I know a shipper that is trusted...good, reliable. Efficient is another thing since I haven't used them and they are new.

earthrealm:
A [b]group buy [/b]of lifepo4 batts for make sense on this forum.
Valto seems to have a sure and cheap china shipping connect
I wonder why e no buy plenty cells sef

If bolded happens pls sign me up.

SoftHeart:
Thanks for your response.

It's actually 280w each, but I've decided not to go with the guy again, because of the responses I've gotten so far.

You are wise

odimbannamdi:
Wow! So there is actually a device that can measure all 3 vitals!?

I just checked on Youtube now and it does exists! Make i go find am.

Baba, what requirement would they need of my system to design one for me? My system will be a 12volt system (1 12v battery and a 12v inverter).

It's sold as is....just get one

odimbannamdi:
Guys, please who sells the two items in the attached picture?

The first one with light is a voltmeter. It has been permanently attached to the battery.

The second one is clamp also permanently attached to the inverter line.

I also need a Wattmeter to use in checking the actual power consumption of my devices.

If you have them, kindly signify so that i can reach out to you. Thanks

You get a wattmetre designed for your need at arena oshodi....displays all you stated and more. Shouldn't be more than 5k (see attached of what I mean)

olopan:
Thanks,
So the package is #70,000 excluding transport.

The package includes;
100Ah battery,
500W inverter/charger
2.5mm wire to connect
And
A miniature 32A knife-edge to switch between Utility and the inverter.

Kindly follow up with contact on profile �

Bolded should be in watt hours to make sense or volt/amphr

GeorgeD1:
charge rate hovered between c5 and c10 in some instances and discharge rate was between c12 and c50
all depending on the time of day and equipment in use.

Nice....thanks baba

ojeysky:
I think he said they don't go below 12.5 per cell, that will keep SOC at 70% and above.

Yeah i got that, but seeing he is using it for elongated periods, I'm curios as to the amps value during charging and discharging.

odimbannamdi:
Dollarnaira, na me buy am ooo...no vex, baba...

Saint2ace even brought it down to Arepo for me. Very nice guy! the bros is very passionate about renewable energy.

We later discovered that the inverter has a dedicated feature for charging tubular batteries. Can wait to test it with my tubular battery arriving this monthend.

I will be selling my Suoer 2000w inverter soon sef...i never even use am.

1

I think that was a steal....but what is the idle current draw?

saint2ace:
Jumia global

Link pls

adrusa:
YES! It actually has a lithium profile in the settings.

thanks boss

GeorgeD1:
i tend to agree with the dod bit as part of a wider range of factors that helped prolong the life of my zenith...

Boss, pls at what average C rate did you charge and discharge those zeniths with while they were in service?

ojeysky:
Certainly since it has adjustable settings

Thanks baba

Hi guys,

Pls anbody knows if fangpusun charge controller can actually handle lithium battery.

It's on the manual, but I want to be sure oh since the manual is a copy of victron's own.

queenfav:
That's cool o.thanks to you guys here,i keep learning new things about solar energy.We plan to upgrade to a bigger set up next year,i will tell Hubby about going for a hybrid inverter with this function.

Hubby is trying oh.....na you de see na him de hear.