₦airaland Forum

tchijioke:
Good evening all,
Has anyone connected these lithium phosphate batteries in series

Did the manual say you can?

mangolpupa:
Alright. Which of the market please?

Check Arena Oshodi.

mangolpupa:
Thanks boss. 1500w would be too much for the application. 500w or 700w should be adequate. What is the name of the tokunbo market?

You won't get a PSW 700w UPS. The APC 1500VA is the least you can.

mangolpupa:
My people, I am looking for tokunbo uninterrupted power systems (UPS) system with pure sine wave output. Is there a used tokunbo market for it in lagos? If yes, does anyone have a sure plug.

Get the APC 1500VA UPS, it's Pure Sine Wave and should be available in the tokunbo market.

dollarnaira:
Brand new?

Brand new Samsung 18650 cell for N1800?

2000+ mah Capacity tested Samsung cells available.

Max available - 50pcs
Price - N1800 per cell.
Location - Lagos

officialfestus:
Good evening to y'all.
Please why is the first connection in this video wrong?
Cc penuelseun dollarnaira ewizard1
https://youtube.com/shorts/6roZMISf79Q?si=zo4drcrN2xA_zILj

The first connection is correct. SPD is looped with Solar input on the MCB not output.

obinna37:
your number

234 8I4 896 6464

obinna37:
ok, one love

Whatsapp me if you're still interested.

obinna37:
I'm not a seller ooo,I b end-user

But you dey sell stuffs I know.

Anyway... na 45k last.

obinna37:
35k

Oga!!! How much you dey sell new one?

Trippledots:
A quick hack to the dust issue could be just lying the stab on it's side rather than standing it upright. That is if the heavy coils are well secured inside for that orientation though.

That way dust would take a very long time to settle in the contact surfaces.

Not advisable.

Wizyoung:
Please, anyone who has lithium Spot-welding tool for sale, kindly quote me.

I want to start building lithium walls like my bosses dollarnaira , officialfestus , pennuel (not sure I got that right) and others whose username is a tremendous task to spell out

Any local (Nigerian) source to buy reliable lithium cells will be appreciated.

You can DIY a spot welder.

Wizyoung:
Yes boss, like placing two or more cells side by side and soldering the metallic connection at the top and button of the cells

You need cell holders first. Then welding.

For welding, you could either go for soldering or spot welding. You can get away with soldering the negative side but extreme care and right tools is required to solder the Positive side.

Codedzng:
Anymore with a used Pure Sine Wave Inverter? If you want to sell pure sine wave inverter pls quote me !

Sachet 24v 800w/1600w... 48k Lagos

okikigsm:
Google that battery inscription to know d more abt it especially d capacity

There isn't need. Cells like those obviously don't have data online.

jonescosmos:
No sir, you are wrong on this one. Except it's a quack, manufacturers will not cross a bar on top of opposite battery terminals carrying high currents. they cross it between the terminals clamping the cells in equal halves. There ought to have been two bars in that pack, one holding each cell rows respectively. And the bars will act as rails for cells cable management. That's how we do it.

Would share images of cell clamping when I get them.

sholikay:
please sir,I want to embark on this kind of diy project,and I want to source for laptops battery to extract this smaller batteries from....
Will I be able to achieve this assembling with these kind of batteries?...
I also need help with necessary steps and mentoring.. could you please put me through sir?..

- Know the basics.
- Get your cells.
- Test them! RIGOROUSLY!!!
- Design
- Build.
- Install. With necessary protection in-place.
- Enjoy.

Xanderone:
Please do you have lithium battery available? I'm interested in purchases.

I have a 24v 200Ah Lithium-ion. Contact in signature.

officialfestus:
I noticed one of series was self discharging.
Others will be at 4.15, while the serie with the bad cell will be at 3.59.
For that reason, it wasn't performing very well because the bms will cut flow when the pack hits a certain voltage, I had to dismantle the pack to spot the bad cell, after dismantling, I decided to charge the serie that was self discharging via a buck converter connected to a laptop charger, then I spotted the cell that was bad, it was getting hot, Asap I disconnected the cell from the serie and boom the serie was able to charge to 4.15 without stress.

(Connected a multimeter to the bad cell, with a minute it drained from 3.59 to 0.2v).

That's usually the issues when you don't perform what I term "Self-discharge test"

Like I said previously, building requires patience. But I understand the excite-rush when first assembling .

Been there, done that.

Valto:
we no de hide our own it is plain and professionally coupled!

Nicely done.

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

Can take a look at it if still interested.

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.

That bar is a clamp. There are cells under it. Its how most battery designer holds their cells in place.

I see lots of that.

Still have this going for 50k.

24v, 800w continous power.

officialfestus:
bro go youtube oh, like this my pack never still they alright.

What happened to your pack?

Building lithium battery takes a lot of patience to have a good build.

Amador1:
No I didn’t. It has always been showing 14 cells from day 1 I got the from the Jos guy

Okay, you probably have a Li-ion system coupled. But the balancer was suppose to take care of that?

Amador1:
I didn’t change any settings on the app because I can’t even remember when last I made use of the app. I only noticed that the display on the battery was blank yesterday which was odd because it has never done that since when I’ve been using the battery and that was what prompted me to make use of the app to confirm if anything was wrong with the battery. This is a screenshot of the settings. I will post pictures of the inverter voltage reading when I get back home.

Why do you have 14S set? Should be 16

Anyone knows if gotok still work?

Good evening House.

Been a while being here. Please what options are available for AE payments?

Thanks.

eghos12:
How is the msw doing does it give bad sound

What are the appliances you are using it for

A MSW inverter would ALWAYS give bad sound to inductive loads.

eghos12:
So my diy enthusiast wast the suppose cut off voltage of 3s li ion battery pack when connected to an inverter

A 3s Li-ion is at 0% at 9v (3v per cell). However, you won't find and inverter that'll go that deep before it shutdown.

24v 800/1600W Pure Sine Wave Sachet inverter for sale @ N50k

Location = Lagos.