NewStats: 3,263,994 , 8,182,192 topics. Date: Monday, 09 June 2025 at 08:24 AM 6m546f

dollarnaira:


This is even bigger.
The one I used was 500w

Is it pure sine wave

obinna37:
can I get higher wattage, like 3000w

NO

cutefy:


Is it pure sine wave

Yes

dollarnaira:


NO

ok

50p 3s in progress.

officialfestus:
50p 3s in progress.

Can you pls show the spot welding material you used. And the price too. Thanks

officialfestus:
50p 3s in progress.

Looking good

BigDickProblems:


Can you pls show the spot welding material you used. And the price too. Thanks

this is my most used spot welder, I also use the 99 gear spot welder too.
$21 with coupon, while 99 gear was $18.

saint2ace:


Looking good

thank you.

officialfestus:
this is my most used spot welder, I also use the 99 gear spot welder too.
$21 with coupon, while 99 gear was $18.

Thanks Chief

BigDickProblems:


Thanks Chief

the first welder I bought doesn't go to sleep mode when not in use, but this current one goes to sleep when not in use, ensure to read the description before purchase.
And handle with Care when using, it doesn't tolerate dropping, that was how my first one got spoilt.

What could cause a 12v 4s 70ah lithium battery pack not to charge to full capacity. The charging cut off at 15.8v

Jabez55:
What could cause a 12v 4s 70ah lithium battery pack not to charge to full capacity. The charging cut off at 15.8v

Bro!
No way a 12v system can charge up to 15.8V. It’s either you are not using a BMS, or that’s a false reading.

Jabez55:
What could cause a 12v 4s 70ah lithium battery pack not to charge to full capacity. The charging cut off at 15.8v

Which of the lithium chemistry, lithium ion or lithium iron phosphate

BigDickProblems:


Bro!
No way a 12v system can charge up to 15.8V. It’s either you are not using a BMS, or that’s a false reading.

Guy, at 4s you charge up to 16.8v at 4.2v per cell. The authority of your comment above amuses me. No vex.

The only issue is to get a compatible inverter that can work at 16.8v.

dollarnaira:



Guy, at 4s you charge up to 16.8v at 4.2v per cell. The authority of your comment above amuses me. No vex.

The only issue is to get a compatible inverter that can work at 16.8v.

Then it’s no longer a 12V system. That’s my point.

BigDickProblems:


Then it’s no longer a 12V system. That’s my point.

The meaning of 12v is : 9v to 15/16v

Observe this room, ask and learn.

dollarnaira:


The meaning of 12v is : 9v to 15/16v

Observe this room, ask and learn.

Bro, I don’t agree. Lai Lai.
15V to 16V is no longer a 12V system.

You can tell me that you will use a bulk converter and set it to maybe 12.6V or 12.8V depending on the battery type. But telling me that a 16V or 15V is a 12V system is false.

BigDickProblems:


Bro, I don’t agree. Lai Lai.
15V to 16V is no longer a 12V system.

You can tell me that you will use a bulk converter and set it to maybe 12.6V or 12.8V depending on the battery type. But telling me that a 16V or 15V is a 12V system is false.

Bros calm down, most 12v inverter systems safely run BTW 10.5v - 15v, the sachet inverters do BTW 9.5v - 15v, while victron does BTW 9v - 17v and they're all 12v systems.

A quick question though,if you don't put them under 12v where would you fit it?

BigDickProblems:


Bro, I don’t agree. Lai Lai.
15V to 16V is no longer a 12V system.

You can tell me that you will use a bulk converter and set it to maybe 12.6V or 12.8V depending on the battery type. But telling me that a 16V or 15V is a 12V system is false.

dollarnaira:

Lols Bro, this is an inverter. And it’s understandable why an inverter should come with a safety margin.

The bone of contention here is that a 12V system is not the same as a 15V or 16V systems. Never! The 15V or 16V is possible to get from your configuration, and it can only work as a 12V system when you use a converter to step it down.

BigDickProblems:

Lols Bro, this is an inverter. And it’s understandable why an inverter should come with a safety margin.

The bone of contention here is that a 12V system is not the same as a 15V or 16V systems. Never! The 15V or 16V is possible to get from your configuration, and it can only work as a 12V system when you use a converter to step it down.

I will leave you to your knowledge.
I have stopped doing this.
Enjoy your new found knowledge and hopefully you will get the light later.
Bye

dollarnaira:


I will leave you to your knowledge.
I have stopped doing this.
Enjoy your new found knowledge and hopefully you will get the light later.
Bye

No Chief, apologies. I don’t mean to disrespect your knowledge or anything like that.
I can always ask you questions and you give me a convincing answer, which I will always appreciate. But this one, I am not convinced, that’s all. I am talking about battery system and not inverter. This is what I just realized is the confusion here. Even the other guy mentioned inverter when I just checked his comment again.

Inverters will always have a safety margin in case of a higher voltage issue so that it doesn’t get damaged. If that’s what you mean by 16V or 15V inverter for 12V battery systems, yes, I totally agree. But if you say that a 12V battery is the same as 15/16V then me and should organize an avenue where we can fight it out 😂😂😂😂. Cos that one, I no go gree.

BigDickProblems:


No Chief, apologies. I don’t mean to disrespect your knowledge or anything like that.
I can always ask you questions and you give me a convincing answer, which I will always appreciate. But this one, I am not convinced, that’s all. I am talking about battery system and not inverter. This is what I just realized is the confusion here. Even the other guy mentioned inverter when I just checked his comment again.

Inverters will always have a safety margin in case of a higher voltage issue so that it doesn’t get damaged. If that’s what you mean by 16V or 15V inverter for 12V battery systems, yes, I totally agree. But if you say that a 12V battery is the same as 15/16V then me and should organize an avenue where we can fight it out 😂😂😂😂. Cos that one, I no go gree.

Na inverter na...
Cells built to above are mean for inverters.

dollarnaira:


Na inverter na...
Cells built to above are mean for inverters.

Now I understand you better. Thanks Chief 🙌

It's a lithium ion battery sir

saint2ace:


Which of the lithium chemistry, lithium ion or lithium iron phosphate

dollarnaira:


Final result:
68.4ah
759.24wh

How much did you buy the meter you used for the test .

I will like to get one

officialfestus:
50p 3s in progress.

Boss how do you calculate the gauge/size of your battery strips?

Obnoxious2001:


Boss how do you calculate the gauge/size of your battery strips?

I don't buy strips less than 0.15x8x10. Because it get burnt easily when welding.
My choices of strips is between 0.15x8mmx10m to 0.2x8mmx10m.

@ dollarnaira please what's the usefulness of the shunt?
I plan on getting without a shunt.

officialfestus:
@ dollarnaira please what's the usefulness of the shunt?
I plan on getting without a shunt.

Without a shunt you can only measure voltage but not amperage. So if u're using for just voltage display then it's fine but if u need to measure capacity then you need a shunt.

Note that based on the amount of current u'll be ing through the meter, you should endeavor to get an adequately spec'ed one for the purpose. Cheers

saint2ace:


Without a shunt you can only measure voltage but not amperage. So if u're using for just voltage display then it's fine but if u need to measure capacity then you need a shunt.

Note that based on the amount of current u'll be ing through the meter, you should endeavor to get an adequately spec'ed one for the purpose. Cheers

Oga don answer.
Thanks