₦airaland Forum

Obnoxious2001:
Do you capacity test your cells before you assemble them?

no I didn't do it myself, but tetralogyfallot did a test on them.

officialfestus:
no I didn't do it myself, but tetralogyfallot did a test on them.

Oh.
Does he test before he sells out?

[quote author=officialfestus post=134534772]Update on my 865w indoor and outdoor power station.
Comprising of 90 cells (3.7v 2.6a ~ 9.62w)




I think your series link isn't enough, just two nickel strip links, it would be better to add more to pass enough current.

like in the picture

Obnoxious2001:
Oh.
Does he test before he sells out?

he does, if you insist.

[quote author=Yemmyteespeed007 post=134538634][/quote]the strip is 0.15mmx8.
And also, what I intend to power with it isn't up to 300w.

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

What's your estimated max amp draw from the battery (your BMS)? if more than 40a, i would suggest you add one more strip of nickel per 3v pack to help beef up the amp handling capacity of the pack. Just thinking aloud....

[quote author=Yemmyteespeed007 post=134538634][/quote]I didn't even see this before posting, i agree with this narrative completely

saint2ace:
What's your estimated max amp draw from the battery (your BMS)? if more than 40a, i would suggest you add one more strip of nickel per 3v pack to help beef up the amp handling capacity of the pack. Just thinking aloud....

30 to 35A.

Jabez55:
What is the recommended current to charge a 12v 4s 70ah battery pack?

lifepo4 or lithium-ion?

Penuelseun:
lifepo4 or lithium-ion?

lithium battery @ 2.6ah 3.7v each

Jabez55:
lithium battery @ 2.6ah 3.7v each

13.8v to 14.0v

officialfestus:
he does, if you insist.

Boss do your testing by yourself.those sellers do random test and that does not mean that you may not get some faulty ones among them(from experience) I have seen 0v among what was sent to me.

My recommendation is still these,very reliable.

officialfestus:
he does, if you insist.

Thank you for this information

[quote author=Yemmyteespeed007 post=134538634][/quote]Please can you send a link or picture of your spot welder

okikigsm:
Boss do your testing by yourself.those sellers do random test and that does not mean that you may not get some faulty ones among them(from experience) I have seen 0v among what was sent to me.

My recommendation is still these,very reliable.

I don't think is necessary, because I only build pack at my spare time.

Penuelseun:
13.8v to 14.0v

I have a old Lumos battery... What voltage can I charge it to

Obnoxious2001:
Please can you send a link or picture of your spot welder

99gear model diy

I have done some modifications though.

okikigsm:
Boss do your testing by yourself.those sellers do random test and that does not mean that you may not get some faulty ones among them(from experience) I have seen 0v among what was sent to me.

My recommendation is still these,very reliable.

Pls how much is this tester now?

seunlayi:
I have a old Lumos battery... What voltage can I charge it to

4s li-ion 16.8v max

Penuelseun:
13.8v to 14.0v

I meant the maximum allowable input current to charge it

Jabez55:
I meant the maximum allowable input current to charge it

Depends on your total battery capacity

ajabani4allah:
Pls how much is this tester now?

$30 -$35 now sales is starting in 2 days time.

I saw exclusive price offer Lii 600 at $24.30 2 days ago but it does stay more than 24hrs.

When u are ready get Intouch,I will guide u.

Hi Guys,

Just finished building my battery bank. I must say that it is very strenous task especially when one is doing it at a spare time. Here are what I got

1. 12V 45Ah LiFePO4 Battery X 4
2. 12V 30Ah LiFePO4 Battery X 2
3. 24V 20 Ah LiFePO4 Battery X 1
4. 24V 30 Ah HLY 26650 Battery X 1

All have BMS and Active Balancer installed with Digital Voltage Display. All are enclosed in IP 65 plastic boxes for safe storage.

I also bought Hyundai 24v inverter (Modified Sign wave) X 2 as I tend to give out some some as a gift to my relatives.

I am just a DIY enthusiast. I spent at a point I was wondering if it's worth it.

I still have about 200 pieces of 18650 3.7v 2ah Battery cells. I intend to build 7S 12P X 2 from them.

My appreciation to
@Dollarnaira
@Officialfestus
@Penuelseun
And the rest of others whom I could not mention. We got lots of smart talented youths in Nigeria. Only that we have clueless criminals who are masquerading as leaders.

Why are they not building solar panel plants or even encourage private investors to do that. Why are we not investing in our lithium deposits. We should be building batteries.

Abeg no mind my rants! It is easy to generate small electricity for household!

9ijaprince:
My appreciation to
@Dollarnaira
@Officialfestus
@Penuelseun
And the rest of others whom I could not mention. We got lots of smart talented youths in Nigeria. Only that we have clueless criminals who are masquerading as leaders.

Why are they not building solar panel plants or even encourage private investors to do that. Why are we not investing in our lithium deposits. We should be building batteries.

Abeg no mind my rants! It is easy to generate small electricity for household!

There is a solar panel assembly plant in Nigeria.

You can check out auxano solar.

Proudly Nigerian made

9ijaprince:
Hi Guys,

Just finished building my battery bank. I must say that it is very strenous task especially when one is doing it at a spare time. Here are what I got

1. 12V 45Ah LiFePO4 Battery X 4
2. 12V 30Ah LiFePO4 Battery X 2
3. 24V 20 Ah LiFePO4 Battery X 1
4. 24V 30 Ah HLY 26650 Battery X 1

All have BMS and Active Balancer installed with Digital Voltage Display. All are enclosed in IP 65 plastic boxes for safe storage.

I also bought Hyundai 24v inverter (Modified Sign wave) X 2 as I tend to give out some some as a gift to my relatives.

I am just a DIY enthusiast. I spent at a point I was wondering if it's worth it.

I still have about 200 pieces of 18650 3.7v 2ah Battery cells. I intend to build 7S 12P X 2 from them.

Can you share information about where u got your LiFePO4 and Liion cells? How much are?

Thanks

9ijaprince:
My appreciation to
@Dollarnaira
@Officialfestus
@Penuelseun
And the rest of others whom I could not mention. We got lots of smart talented youths in Nigeria. Only that we have clueless criminals who are masquerading as leaders.

Why are they not building solar panel plants or even encourage private investors to do that. Why are we not investing in our lithium deposits. We should be building batteries.

Abeg no mind my rants! It is easy to generate small electricity for household!

congratulations on your build.

Jabez55:
What is the recommended current to charge a 12v 4s 70ah battery pack?

Use 7 to 10 amps. Don’t allow it to be more than ten

What if you're using a charge controller?
Is 20a safe?
Also what's the recommended float, absorption for 4s 16.8v lion battery

Inside of my 865w power station.

officialfestus:
Inside of my 865w power station.

Nice... Mobile and Portable.
What type of inverter did you use in this design.

cutefy:
Nice... Mobile and Portable.
What type of inverter did you use in this design.

Msw 1500va sachet inverter.