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.

I have this spare 24v 800/1600 Pure Sine wave sachet inverter for sale.

Price - 50k.
Location - Oshodi/Isolo, Lagos

I have this spare 800/1600 Pure Sine wave sachet inverter for sale.

Price - 50k firm.
Location - Oshodi/Isolo, Lagos

Debroslink:
I have a bluetti power station and wanna pair it with an external lifepo4 battery. The aim is to increase the Wh capacity.

1. Is it a good combination?

2. How will I charge the battery since I don't have an inverter?

3. Will I need a charge controller for the battery?

If your location is Lagos, I can look at it for you.
Contact details in sig.

officialfestus:
Good evening to y'all, please I need your help. My diy 1kw trips off whenever it tries to power the UPS, but the 44ah is doing well.
Please what could be the problem?
Cc penuelseun dollarnaira

Check the voltage as it tries to power the ups. See if there's a rapid voltage drop before the trip.

madaleeda:
See the battery

Would be nice if you compress these batteries. They are polymer pouch cells and tend to swell as they cycle.

officialfestus:
My build powers my blue gate UPS now, thanks to you all.
Dollarnaira, penuelseun and ewizard1.

Nice!

Welcome on-Lithium-board.

mvphenryeto5:


Bro you are using sachet inverter to power Ac while some people here said sachet inverter can't power a freezer

A true rated power sachet inverter can power AC.

dollarnaira:


With the right mosfets replaced,it will work

Not always Mosfet... could be the oscillating driver circuit is fried, and most technicians don't bother much with that.

If it has visited several technicians and still didn't work, then it's past Mosfet issue.

gifted65:


What do you suggest I do now?

Pay a better installer for rejuvenation.

Trippledots:



The installer did this for you free?? Why are cables flying everywhere?

Meanwhile your system is too small for the load you are putting on it.

A proper installation might cost too much for him.

mvphenryeto5:


Yes

I was glad I didn't!

mvphenryeto5:


There's no how you can enjoy a used sealed lead acid battery cos you don't know how it was used, it might have only 20-30% efficiency left, to enjoy Lead acid you have to buy it brand New from reputable brand

Okay, you meant I should have gone for brand new Lead Acid?

Reading these several Lithium vs Tubular takes...

Sincerely, not everyone can afford Lithium at a go, but my worry is the way these Tubular now flood our market. It leaves something to be worried about.

If not exaggerating, there'll be over 200 different brands of these Tubulars available in Nigeria currently and that's where a lot would simply sink there hard earned money on thrash.

I also started with 2 pcs used Sealed Lead Acid battery few years back before I tried assembling a small Lithium battery for myself and currently see those LA batteries as simply waste of money.

So my honest opinion is people going for these Tubulars should reach for reputable brands to effectively enjoy their invested worth.

800V - 1000V HVDC.

We don't want to start reading news like "Solar Installer electrocuted while working." ooo!!!

jonescosmos:


I am unapologetically a hybrid fan, till next life, Take it or leave it, standalone systems are gradually becoming obsolete.

E be like you dey produce Hybrid!

Because...