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Diy Lithium Ion Like-minds - Technology Market (70) - Nairaland

Nairaland ForumScience/TechnologyTechnology MarketDiy Lithium Ion Like-minds (111719 Views)

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Re: Diy Lithium Ion Like-minds by obinna37(m): 9:33am On Jun 06, 2025
officialfestus:
Is it feasible to use 550w panels instead of 300w for a 24v system?
so far your controller is mppt,any of the solar panels are good to go
Re: Diy Lithium Ion Like-minds by dollarnaira(op): 9:42am On Jun 06, 2025
officialfestus:
soldering is a tedious task and often times very rough, unlike welding.
Probably you need to know the act of soldering.
Re: Diy Lithium Ion Like-minds by dollarnaira(op): 10:19am On Jun 06, 2025
officialfestus:
Is it feasible to use 550w panels instead of 300w for a 24v system?
The controller min/max input voltage will ans d question.
Re: Diy Lithium Ion Like-minds by officialfestus(m): 11:32am On Jun 06, 2025
obinna37:
so far your controller is mppt,any of the solar panels are good to go
thank you.
Re: Diy Lithium Ion Like-minds by officialfestus(m): 11:33am On Jun 06, 2025
dollarnaira:
Probably you need to know the act of soldering.
it still wouldn't give the feeling and look of welding.
Re: Diy Lithium Ion Like-minds by officialfestus(m): 11:33am On Jun 06, 2025
dollarnaira:
The controller min/max input voltage will ans d question.
OK, thank you.
Re: Diy Lithium Ion Like-minds by dollarnaira(op): 12:02pm On Jun 06, 2025
officialfestus:
it still wouldn't give the feeling and look of welding.
Definitely it will not but cost, materials,and availability is guaranteed though will little technique and stress.

Note that a good battery goes beyond aesthetic.

Someone here spot welded over 600 cells at 7s but still cannot power 1hp sumo. Sth is wrong somewhere.
Re: Diy Lithium Ion Like-minds by saint2ace(m): 2:17pm On Jun 06, 2025
officialfestus:
I thought that the function of the bms if we use chargers or inverters meant for lead acids batteries.
The function of the BMS is to cut off at set points, but to achieve that one has to be conservative, unfortunately the parameters we use is to squeeze out every ounce of power from the battery, so at the end of the day we charge it like a lead acid battery.
Re: Diy Lithium Ion Like-minds by officialfestus(m): 4:03pm On Jun 06, 2025
dollarnaira:
Definitely it will not but cost, materials,and availability is guaranteed though will little technique and stress.

Note that a good battery goes beyond aesthetic.

Someone here spot welded over 600 cells at 7s but still cannot power 1hp sumo. Sth is wrong somewhere.
I think the cells he used are extracted from dead laptops battery or probably fake Chinese cells.
Re: Diy Lithium Ion Like-minds by dollarnaira(op): 4:17pm On Jun 06, 2025
officialfestus:
I think the cells he used are extracted from dead laptops battery or probably fake Chinese cells.
Probably
Are your builds for sale?
Re: Diy Lithium Ion Like-minds by iraybuju: 11:02pm On Jun 06, 2025
officialfestus:
Is it feasible to use 550w panels instead of 300w for a 24v system?
This your question shall get as e be oh, only one 550w panel is not even enough
Re: Diy Lithium Ion Like-minds by Fremlin: 11:36pm On Jun 06, 2025
Good day guys....

Between 24v 2.5kwh and a 12v 4kwh setup, which is better?

In charging (from grid) and length of usage (assuming they both power thesame load).

Also in terms of number of panels needed, which needs more?
Re: Diy Lithium Ion Like-minds by officialfestus(m): 11:41pm On Jun 06, 2025
iraybuju:
This your question shall get as e be oh, only one 550w panel is not even enough
panels, not panel.
Re: Diy Lithium Ion Like-minds by officialfestus(m): 11:43pm On Jun 06, 2025
dollarnaira:
Probably
Are your builds for sale?
At first I was building it for fun, but now I'm selling them.
Re: Diy Lithium Ion Like-minds by officialfestus(m): 11:45pm On Jun 06, 2025
Fremlin:
Good day guys....

Between 24v 2.5kwh and a 12v 4kwh setup, which is better?

In charging (from grid) and length of usage (assuming they both power thesame load).

Also in terms of number of panels needed, which needs more?
the 24v will charge faster,while the 12v will power the load longer than the 24v.
Re: Diy Lithium Ion Like-minds by officialfestus(m): 11:50pm On Jun 06, 2025
24v 2.4kw

Re: Diy Lithium Ion Like-minds by Fremlin:
officialfestus:
the 24v will charge faster,while the 12v will power the load longer than the 24v.
Thanks chief
Re: Diy Lithium Ion Like-minds by dollarnaira(op): 2:49am On Jun 07, 2025
officialfestus:
Is it feasible to use 550w panels instead of 300w for a 24v system?
Yes
Re: Diy Lithium Ion Like-minds by dollarnaira(op): 2:56am On Jun 07, 2025
officialfestus:
24v 2.4kw
Super neat and beautiful.
Re: Diy Lithium Ion Like-minds by officialfestus(m): 7:47pm On Jun 07, 2025
dollarnaira:
Super neat and beautiful.
thank you sir.
Re: Diy Lithium Ion Like-minds by Obnoxious2001(m): 9:11pm On Jun 07, 2025
officialfestus:
24v 2.4kw
Very nice build smiley

This will be faster for commercial build
Re: Diy Lithium Ion Like-minds by edobor108(m): 4:40am On Jun 08, 2025
good morning, please i need this spot welder very urgently, ordering it from AliExpress will take a long time before arrival and i need it before tuesday

Re: Diy Lithium Ion Like-minds by officialfestus(m): 7:09am On Jun 08, 2025
Obnoxious2001:
Very nice build smiley

This will be faster for commercial build
thank you.
Re: Diy Lithium Ion Like-minds by officialfestus(m): 7:09am On Jun 08, 2025
edobor108:
good morning, please i need this spot welder very urgently, ordering it from AliExpress will take a long time before arrival and i need it before tuesday
I have one for sale.
It hasn't been use, because I bought it alongside the 8000w spot welder I'm using currently.

Re: Diy Lithium Ion Like-minds by 9ijaprince(m): 1:01pm On Jun 09, 2025
officialfestus:
24v 2.4kw
Please what is the ampere capacity of each cell? If I am correct, what I am seeing here is 7S 30P configuration. I am of the opinion that JBD BMS would have been much better that the heltec BMC and active balancer you used. The price might not have much difference.
Re: Diy Lithium Ion Like-minds by zeestone99(m): 1:33pm On Jun 09, 2025
I have 3.2v 314ah LiFepo4 for sale. 100k
08117398294
Re: Diy Lithium Ion Like-minds by olujosh301(m): 4:05pm On Jun 09, 2025
Cells, case, bms, all available for sale
Hit me up on 0704 310 8767 if you're interested with a reasonable offer
Location: Lagos

0704 310 8767

Re: Diy Lithium Ion Like-minds by dollarnaira(op): 4:17pm On Jun 09, 2025
olujosh301:
Cells, case, bms, all available for sale
Hit me up on 0704 310 8767 if you're interested with a reasonable offer
Location: Lagos

0704 310 8767
Do you have active balancers?
Re: Diy Lithium Ion Like-minds by officialfestus(m): 8:10pm On Jun 09, 2025
9ijaprince:
Please what is the ampere capacity of each cell? If I am correct, what I am seeing here is 7S 30P configuration. I am of the opinion that JBD BMS would have been much better that the heltec BMC and active balancer you used. The price might not have much difference.
3.2 and 3.1
Re: Diy Lithium Ion Like-minds by olujosh301(m): 9:14am On Jun 10, 2025
dollarnaira:
Do you have active balancers?
No
Re: Diy Lithium Ion Like-minds by justiniyke29: 6:31am On Jun 11, 2025
Good morning my chiefs in the house, please can i connect two 450w or 500w panels in series to a 30a MPPT charge controller (its for a 24v system). the controller has a max pv input of 100v (so i know it can handle the voltage of the two panel in series), am just concerned about the total wattage if the controller can handle 900 or 1000 watts of power
Re: Diy Lithium Ion Like-minds by saint2ace(m):
justiniyke29:
Good morning my chiefs in the house, please can i connect two 450w or 500w panels in series to a 30a MPPT charge controller (its for a 24v system). the controller has a max pv input of 100v (so i know it can handle the voltage of the two panel in series), am just concerned about the total wattage if the controller can handle 900 or 1000 watts of power
It will work just fine, insofar as the VOC is within range you have no problems; for the wattage the CC will cut off at the max watt for the system, since it's 30a at 24v, it should be between 720w - 800w. I have a similiar setup with 2pcs 400w Jinko panels in series attached to a victron CC 100 30 and it works flawlessly.
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