ceaser:


Maybe dude is trying to reduce the failure points that'll need to be addressed with higher 48v battery bank.

48v (4 in series) versus 24v (2 in series) - 4 potential fails versus 2 potential fails.

My own comment though would have been structured thus:

Nice and neatly done, but for such a huge bank size, why is LA preferred over Lithium?

samnaija:


Please do you have an idea how much this setup he made will cost for lithium batteries think it is 24v 800 ah . Thanks

Valto:
it is approximately 2million, assuming u are going the DIY way. that is 32pcs of 200ah lifepo4 cells with good bms.

odimbannamdi:
Guys, please advise the components and accessories I need to buy to facilitate solar panels installation to my system.

What size and type of wire(s) is recommended to buy to connect the panels to the charge controller and battery system?

And how important are breakers to a solar system? Can one get away without using them?

HilcomTech:
Good evening gurus in the house,

I have a string of 2V AGM batteries but unfortunately one of them died. My intension is to convert to lithium batteries but this economy hasn't been smiling lately.

As an alternative, I was able to get a 2v battery to replace the dead 2v battery in the interim. My challenge now is how to connect them since the old 2v battery is 2 plugs while the replacement 2v battery is 4 plugs.

Bellow is a description of the ways I feel I could connect the new battery into the system.

Thanks as I await your responses.

earthrealm:


Hmmmm, 2v that have double terminals like that are higher capacity cells, are you sure it is same capacity with your existing cells?.

If not, you are already making a bad situation worse..

Simplest way is to buy copper tape 25mm drill two holes, cut to size and link both terminals together.you can wrap with tape to provide some insulation.

The method in your diagrams are also ok.

The dual terminals is to enable the cell carry higher load..i guess thats a 2v 1000ah cell. So its expected to carry 100amps max...or 50amps each since it has dual terminals. If your load is no way near that..you can even use 1 terminal...no issues

Valto:
it is approximately 2million, assuming u are going the DIY way. that is 32pcs of 200ah lifepo4 cells with good bms.

Dam5reey:


Way I see it is that he want to replace those Quanta Lead Acid.. with Lifepo4 equivalent..

The 8 LA is 19.2KWH, 9.6KWH Usable. 50% DOD
16, 280AH, 14.3KWH, 11.4KWH Usable. 80% DOD
8 LA can easily be replaced with 16 of 280AH cells If he want to match usage capacity a

16 Lifepo4 cells will only take the space of 2 Quanta
1.4M should do a perfect DIY build

32 of 200AH if he want to match exact capacity..
20KWH, 16KWH usable

mcTrinity:
1/2

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*3.5KVA/24V Inverter
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samnaija:


Thanks for info , it's on the high side. I don't blame the client for sticking with LA. Make this prices come down then we can port.

remizvxcq:
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You can just buy one of the job lots.
price drop in lot 4
Contact: RITILITY
Whatsapp https:///2348133708089

smallsmall:
Gurus, one question.

Can one mix together (charging and usage), two battery Banks of,
Any downside, danger?

FireTheSun:
I read somewhere on this thread, where someone here bought a Ready-Assembled liFePo4 battery from a Company around Lekki/Epe (Lagos) axis.

Thanks

samnaija:


@ thanks bro for the diagram about the battery balancer, it really helped has I upgraded my battery banks and used only one balancer really appreciate

smallsmall:
Gurus, one question.

Can one mix together (charging and usage), two battery Banks of,
1) LiFePo4 Pristmatic Cells
2) and the other LiFEPo4 32650 Cells,
if both are of the same Capacity (3kW each) and connected to the same Hybrid Inverter?
To form 6KW Battery Bank.
Any downside, danger?

smallsmall:
Gurus, one question.

Can one mix together (charging and usage), two battery Banks of,
1) LiFePo4 Pristmatic Cells
2) and the other LiFEPo4 32650 Cells,
if both are of the same Capacity (3kW each) and connected to the same Hybrid Inverter?
To form 6KW Battery Bank.
Any downside, danger?

ceaser:
Before now I believed that dry season dust on solar panels do not have SIGNIFICANT negative impact on insolation. But I got tired of the suboptimal output from my array and contracted the services of a carpenter to help climb the roof and do the cleaning.

Done early in the morning, the picture shows the before cleaning, at 25% cleaning and at 50% cleaning of the array. Dem never even reach 100% sef.

162w to 347w to 665w

I don't need any more convincing.

smallsmall:
Gurus, one question.

Can one mix together (charging and usage), two battery Banks of,
1) LiFePo4 Pristmatic Cells
2) and the other LiFEPo4 32650 Cells,
if both are of the same Capacity (3kW each) and connected to the same Hybrid Inverter?
To form 6KW Battery Bank.
Any downside, danger?

ceaser:
Before now I believed that dry season dust on solar panels do not have SIGNIFICANT negative impact on insolation. But I got tired of the suboptimal output from my array and contracted the services of a carpenter to help climb the roof and do the cleaning.

Done early in the morning, the picture shows the before cleaning, at 25% cleaning and at 50% cleaning of the array. Dem never even reach 100% sef.

162w to 347w to 665w

I don't need any more convincing.

FireTheSun:
I read somewhere on this thread, where someone here bought a Ready-Assembled liFePo4 battery from a Company around Lekki/Epe (Lagos) axis.
I cant locate the Post any more but l want to contact the company because l want to replace my AGM batteries with LiFePo4 batteries.
Can anyone help with information on that post or the company involved, please.

Thanks

earthrealm:


Using 1 balancer for 16 batts of 200ah ....no get head, its like using bike to drive from lagos to maidugri. It wouldnt achieve much, unless you installed it just for feel good feeling.

2 balancers is the minimum i would recommend, or 4 if you want to it optimally.

Ha12 with bluetooth is an upgraded model of ha02, you can see its working..from the graph it plots

samnaija:


@ thanks bro for the diagram about the battery balancer, it really helped has I upgraded my battery banks and used only one balancer really appreciate

samnaija:


I used it for 12 battery bank, and all are equalized .

mcTrinity:


Hello Damnaija,
. You're welcome sir.

However, I hope you didn't use only one balancer for a 5-string battery bank?

One balancer can conveniently serve a 2-string battery bank. I drew the diagram for explanation purpose. For example, in my recent installed Pic, I used 3 balancers for a 4-string battery bank.
Cheers

funshyboi:
Hello guys
I noticed these line traces all over my solar panel. What does it mean ?

Or could it be the reason why I’ve been having low amp supply lately?

remizvxcq:
I think "No worries" on 2 conditions:
1. Each battery bank has its own BMS
2. Both battery packs have similar charge & discharge profiles. How do l achieve this, please?
Otherwise the banks may soon become out-of-balance with each other.

ceaser:


Prismatic and cylindrical LifePO4 usually have some difference in terms of power density with cylindrical having greater density even though the capacity may be the same. This is the reason Tesla has stuck with that form factor in his 2700 Li-ion cells and his newer iterations of 4680 lifePO4 cells. So you don't want to combine them in one pack. In fact, it is advisable to only combine the same cell type having the same batch number, manufacturer and manufacture date in the same pack.

So what you wanna do is to have each type of cells to form a different pack. One pack of prismatic and a second pack of cylindrical cells. Then each with its own BMS. Then you can connect the two resulting packs in parallel. As LifePO4, they have the same charging profile so there shouldn't be any issues with hooking them together in parallel.

ojeysky:


Even if they are of different capacity do long as they are separate battery bank put together in parallel you are good to go