dollarnaira:


Lol.
5 or 2 pieces are no deal definitely but at least considerable numbers of cells.
At 3s a:
24A pack = 36 cells
60A pack = 90 cells
100A pack = 150 cells.
Note that this 24A pack powered a 32 inches for 7hrs and a 32' tv plus gotv decodere for 5hrs. Now, imagine hours on just 3 5w bulbs plus few phones charging on this 24A pack.

wow! Incredible.

My packages arrived today, and I decided to continue with the diy battery pack.

Imagine buying soldering lead for 2k.😔

The advantage of using pvc pipe as a battery bracket, is that you can change any cell without dismantling the whole pack.

I'm almost done.

I can't seem to solder wires on my batteries
Any suggestions

officialfestus:
My packages arrived today, and I decided to continue with the diy battery pack.

Imagine buying soldering lead for 2k.😔

that's good, which of the wire is ethernet cable

obinna37:
that's good, which of the wire is ethernet cable

the black coiled wire.

@fesstus
Good job!
But have you balance charge all cells before running as 3s? It is VERY IMPORTANT.

officialfestus:
the black coiled wire.

ok what is it use for

dollarnaira:
@fesstus
Good job!
But have you balance charge all cells before running as 3s? It is VERY IMPORTANT.

I charged them, but not fully charged, I have solder all of them together, but only in parallel connection.
While in parallel connection, they'll balance themselves.
This morning when I tested the voltage, they were.
3.8
3.7
3.69

@dollarnaira
I thought it was the function of a bms to balance the cells by itself.

Buying a liitokla 18650 battery charger is too expensive.

officialfestus:
I charged them, but not fully charged, I have solder all of them together, but only in parallel connection.
While in parallel connection, they'll balance themselves.
This morning when I tested the voltage, they were.
3.8
3.7
3.69

Not bad but you need to know the voltage of each cell. Since you didn't have the right devices to work this process effectively, disconnect all negative terminals and observe again for self discharged cells after some days. IT IS VERY IMPORTANT.

Without needed patience your build will turn bad.

I waited for more than 3 weeks in my case just to be sure of things.

Who dey build lithium ion pack no dey hurry o.

officialfestus:
@dollarnaira
I thought it was the function of a bms to balance the cells by itself.

Buying a liitokla 18650 battery charger is too expensive.

Bms will balance only what is right.

dollarnaira:

Not bad but you need to know the voltage of each cell. Since you didn't have the right devices to work this process effectively, disconnect all negative terminals and observe again for self discharged cells after some days. IT IS VERY IMPORTANT.

Without needed patience your build will turn bad.

I waited for more than 3 weeks in my case just to be sure of things.
Who dey build lithium ion pack no dey hurry o.

Thanks.
But before soldering, I tested all cells and removed the ones that self discharged within that 2 weeks frame of waiting for my package from aliexpress.

dollarnaira:


Bms will balance only what is right.

how many amps is your build?

@dollarnaira
Can I get the charger here in Nigeria?

officialfestus:
how many amps is your build?

My amp hmmm?
348 pieces
Amp is roughly 230A or more bc i got tired of capacity testing..

officialfestus:
@dollarnaira
Can I get the charger here in Nigeria?

If u have access to a buck converter u can build an adjustable charging system.

dollarnaira:


My amp hmmm?
348 pieces
Amp is roughly 230A or more bc i got tired of capacity testing..

wow!
How's the performance, and how did you source for the cells?

dollarnaira:

If u have access to a buck converter u can build an adjustable charging system.

thank you very for all the information you've fed me with.

officialfestus:
wow!
How's the performance, and how did you source for the cells?

Full house:
All electronics
Except Ac and iron.

Note at 11.0 or slightly below it won't power freezer due to surge. Every others work even at 10v

officialfestus:
thank you very for all the information you've fed me with.

Ywc sir.

dollarnaira:

Full house:
All electronics
Except Ac and iron.

Note at 11.0 or slightly below it won't power freezer due to surge. Every others work even at 10v

omo! 🙂 lithium sweet be that.
Though my house setup is still performing wonders since after two years.
But I just want to build this 12v 40ah system for outdoor use.
DIY power station, I'll be making use of the ups I bought from valto since 2020 for the setup, I'll meet a furniture to build me the case.

dollarnaira:

Ywc sir.

this our guy price too high per cell, if not I for like buy 100pcs.

officialfestus:
omo! 🙂 lithium sweet be that.
Though my house setup is still performing wonders since after two years.
But I just want to build this 12v 40ah system for outdoor use.
DIY power station, I'll be making use of the ups I bought from valto since 2020 for the setup, I'll meet a furniture to build me the case.

Hello, bro. Keenly following this thread. Is it advisable to use UPS to power li-ion batteries? I read in a blog that most Nigerian UPS are built for lead-acid batteries. Please, throw more light on this, so I can continue from where I left off

officialfestus:
this our guy price too high per cell, if not I for like buy 100pcs.

Chat him up

officialfestus:
omo! 🙂 lithium sweet be that.
Though my house setup is still performing wonders since after two years.
But I just want to build this 12v 40ah system for outdoor use.
DIY power station, I'll be making use of the ups I bought from valto since 2020 for the setup, I'll meet a furniture to build me the case.

Nice

NACE13:


Hello, bro. Keenly following this thread. Is it advisable to use UPS to power li-ion batteries? I read in a blog that most Nigerian UPS are built for lead-acid batteries. Please, throw more light on this, so I can continue from where I left off

the UPS is no powering the li-ion batteries, the batteries is the one powering the UPS.
Any battery can serve as far it's the rated voltage for the UPS.

NACE13:


Hello, bro. Keenly following this thread. Is it advisable to use UPS to power li-ion batteries? I read in a blog that most Nigerian UPS are built for lead-acid batteries. Please, throw more light on this, so I can continue from where I left off

DO NOT TRY IT!!!

You can use lithium batteries with your UPS but you will need a compatible battery charger. Don't charge with the UPS

dacool1:
You can use lithium batteries with your UPS but you will need a compatible battery charger. Don't charge with the UPS

Dis will work

officialfestus:
My packages arrived today, and I decided to continue with the diy battery pack.

Imagine buying soldering lead for 2k.😔

Where u buy d soldering lead?

Bought this at alaba for #1400.

Buying soldering lead from AliExpress is always costly.i have tried it many times.