Diy Lithium Ion Like-minds - Technology Market (54)

Diy Lithium Ion Like-minds - Technology Market (54) - Nairaland

Nairaland Forum › Science/Technology › Technology Market › Diy Lithium Ion Like-minds (110431 Views)

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Re: Diy Lithium Ion Like-minds by officialfestus(m): 8:26am On Mar 02, 2025

dollarnaira:
This thread is NOT for ADVERTS but strictly for diy experience under building safe lithium ion battery packs. Cylindrical LifePO4 diy also included.

so this thread is more than a year now, I was thinking it was created last year. 😅

Re: Diy Lithium Ion Like-minds by dollarnaira(op): 8:42am On Mar 02, 2025

officialfestus:
no sir, they're 2.6ah.

Ok
But how did arrive at 865w?
Note that they can't be 2.6ah again since they are no longer new.

Probably they are now 2.2ah or 2ah.

W = 2.2×25×11.1= 610.5wh

Re: Diy Lithium Ion Like-minds by officialfestus(m): 9:23am On Mar 02, 2025

dollarnaira:
Ok
But how did arrive at 865w?
Note that they can't be 2.6ah again since they are no longer new.

Probably they are now 2.2ah or 2ah.

W = 2.2×25×11.1= 610.5wh

they are still 2.6ah.
30p 3s.

Re: Diy Lithium Ion Like-minds by dollarnaira(op): 9:51am On Mar 02, 2025

officialfestus:
no sir, they're 2.6ah.

Oh yeah 30
Didn't count well.
Am sorry

1 Like

Re: Diy Lithium Ion Like-minds by Ybholy(m): 10:50am On Mar 02, 2025

Really nice work y’all doing here.

Remember to join this platform to Buy/Sell solar products. God bless

Re: Diy Lithium Ion Like-minds by ajabani4allah(m): 1:21pm On Mar 03, 2025

Ademat7:
Link to the thread abeg🙏

https://www.nairaland.com/390522/solar-energy-complement-fta

Re: Diy Lithium Ion Like-minds by AdexAyanfe: 9:46am On Mar 04, 2025

Please I need 3s active balancer. Who's selling??

Re: Diy Lithium Ion Like-minds by dollarnaira(op): 11:23am On Mar 04, 2025

AdexAyanfe:
Please I need 3s active balancer. Who's selling??

@Tetralogyfallot

Re: Diy Lithium Ion Like-minds by okikigsm: 5:24pm On Mar 04, 2025

AdexAyanfe:
Please I need 3s active balancer. Who's selling??

If you dont want to experience delay atimes ,order things you needed directly from ae.with just $10 can buy something reasonable depending on the type u need.not only bms o

Re: Diy Lithium Ion Like-minds by officialfestus(m): 10:25pm On Mar 04, 2025

Is it normal for cells to get hot a bit after connecting them in parallel?

Below is the picture of the cell.

Re: Diy Lithium Ion Like-minds by dollarnaira(op): 10:33pm On Mar 04, 2025

officialfestus:
Is it normal for cells to get hot a bit after connecting them in parallel?

Below is the picture of the cell.

Very normal.
Moving and exchange of electrons from higher ones to lower ones in splits of seconds. The journey dey hot oo as internal resistance differs.

3 Likes

Re: Diy Lithium Ion Like-minds by officialfestus(m): 5:14am On Mar 05, 2025

dollarnaira:
Very normal.
Moving and exchange of electrons from higher ones to lower ones in splits of seconds. The journey dey hot oo as internal resistance differs.

greetings sir, thank you very much, I was thinking the cells were bad.

Re: Diy Lithium Ion Like-minds by okikigsm: 7:24am On Mar 05, 2025

officialfestus:
Is it normal for cells to get hot a bit after connecting them in parallel?

Below is the picture of the cell.

Oga there is diff btw hot and warm o.any battery with high internal resistance is bad.

It's painful to be discovering that one or more battery is not okay after coupling,that a battery maintained 4.20v and also over a period of time does not say it's good.

It's advisable to know your battery well b4 coupling,get a battery tester,this does that.

1 Like

Re: Diy Lithium Ion Like-minds by officialfestus(m): 1:06pm On Mar 05, 2025

okikigsm:
Oga there is diff btw hot and warm o.any battery with high internal resistance is bad.

It's painful to be discovering that one or more battery is not okay after coupling,that a battery maintained 4.20v and also over a period of time does not say it's good.

It's advisable to know your battery well b4 coupling,get a battery tester,this does that.

how much is it?

Re: Diy Lithium Ion Like-minds by saint2ace(m): 4:24pm On Mar 05, 2025

officialfestus:
Is it normal for cells to get hot a bit after connecting them in parallel?

Below is the picture of the cell.

What was the SOC of both batteries before you connected it? Cos if there's a difference in the SOC, power will move from high to low as stated by dollarnaira. Standard practice would be to charge all battery cells to a voltage of 4.2v, let it rest for awhile then weld together.

Re: Diy Lithium Ion Like-minds by officialfestus(m): 4:57pm On Mar 05, 2025

saint2ace:
What was the SOC of both batteries before you connected it? Cos if there's a difference in the SOC, power will move from high to low as stated by dollarnaira. Standard practice would be to charge all battery cells to a voltage of 4.2v, let it rest for awhile then weld together.

The SOC of all cells are different, some are 3.9v, 3.2v, 3.5v and 4v.

Re: Diy Lithium Ion Like-minds by saint2ace(m): 6:41pm On Mar 05, 2025

officialfestus:
The SOC of all cells are different, some are 3.9v, 3.2v, 3.5v and 4v.

And the reason shows itself grin

2 Likes

Re: Diy Lithium Ion Like-minds by Intellab(m): 12:01am On Mar 06, 2025

officialfestus:
I finished building it today, 24v 7s 2.59kwh.

Where did you buy the battery holder? I need 620 pieces.

Re: Diy Lithium Ion Like-minds by officialfestus(m): 5:12am On Mar 06, 2025

Intellab:
Where did you buy the battery holder? I need 620 pieces.

I bought them from Aliexpress.

Re: Diy Lithium Ion Like-minds by Jabez55: 6:40pm On Mar 07, 2025

House please refer me to someone that can build lithium battery pack in Abuja, kaduna or Niger state. Thanks

Re: Diy Lithium Ion Like-minds by raski04(m): 6:51pm On Mar 07, 2025

Jabez55:
House please refer me to someone that can build lithium battery pack in Abuja, kaduna or Niger state. Thanks

Message or call this guy ( +234 916 131 5322)
He's in abuja

1 Like

Re: Diy Lithium Ion Like-minds by psucc(m): 9:40pm On Mar 12, 2025

This thread had the last update on the 7th of March, 2025. Please, gurus in the house, how busy are you to allow this thread suffer so much?
@Tetralogyfalot
@OfficialFestus
@Intellab
@Okikisgm
@saint2ace
@Dollarnaira

And others

Re: Diy Lithium Ion Like-minds by okikigsm: 6:32am On Mar 13, 2025

psucc:
This thread had the last update on the 7th of March, 2025. Please, gurus in the house, how busy are you to allow this thread suffer so much?
@Tetralogyfalot
@OfficialFestus
@Intellab
@Okikisgm
@saint2ace
@Dollarnaira

And others

Apologies

Re: Diy Lithium Ion Like-minds by okikigsm: 6:42am On Mar 13, 2025

Some people will come here to seek for a solution/ a way-out but will never come back here to tell d house if d problem is solved or not,and or how it was solved.

Some will not bring new discovery or experience on board here.

Many here are not into diy as before again ,they have migrated to premium product,but their contribution is needed here for we that are still carry diy for head

I think these are some of the reasons

psucc:
This thread had the last update on the 7th of March, 2025. Please, gurus in the house, how busy are you to allow this thread suffer so much?
@Tetralogyfalot
@OfficialFestus
@Intellab
@Okikisgm
@saint2ace
@Dollarnaira

And others

Re: Diy Lithium Ion Like-minds by officialfestus(m): 11:03pm On Mar 13, 2025

psucc:
This thread had the last update on the 7th of March, 2025. Please, gurus in the house, how busy are you to allow this thread suffer so much?
@Tetralogyfalot
@OfficialFestus
@Intellab
@Okikisgm
@saint2ace
@Dollarnaira

And others

I've been busy to update the thread lately, but I'll be doing that soon.

Re: Diy Lithium Ion Like-minds by officialfestus(m): 11:05pm On Mar 13, 2025*

Currently building 4 portable and movable powerstations.
2 12volts. 1.5kw and 865w
2 24volts. 2kw and 1kw.

1 Like

Re: Diy Lithium Ion Like-minds by cutefy: 11:19pm On Mar 13, 2025

Good day house.

Please where can I get this LiFePo cells.

Re: Diy Lithium Ion Like-minds by officialfestus(m): 4:44am On Mar 14, 2025

cutefy:
Good day house.

Please where can I get this LiFePo cells.

Contact valto

Re: Diy Lithium Ion Like-minds by cutefy: 5:35am On Mar 14, 2025

officialfestus:
Contact valto

Ok, thanks.

Re: Diy Lithium Ion Like-minds by officialfestus(m): 11:55am On Mar 14, 2025

Update on my 865w indoor and outdoor power station.
Comprising of 90 cells (3.7v 2.6a ~ 9.62w)
Brass Terminals.
12x12 adaptable box.
Wires.
Bms.
3s battery equalizer (balancer).
Switch.
1500va msw sachet inverter.
Handle.
Voltmeter

Note: All parts except Switch and wire were bought from one of us here @tetralogyfallot

4 Likes

Re: Diy Lithium Ion Like-minds by Obnoxious2001(m): 3:26pm On Mar 14, 2025

officialfestus:
Update on my 865w indoor and outdoor power station.
Comprising of 90 cells (3.7v 2.6a ~ 9.62w)
Brass Terminals.
12x12 adaptable box.
Wires.
Bms.
3s battery equalizer (balancer).
Switch.
1500va msw sachet inverter.
Handle.
Voltmeter

Note: All parts except Switch and wire were bought from one of us here @tetralogyfallot

Do you capacity test your cells before you assemble them?

Re: Diy Lithium Ion Like-minds by Jabez55: 3:44pm On Mar 14, 2025

What is the recommended current to charge a 12v 4s 70ah battery pack?

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