NewStats: 3,264,102 , 8,182,600 topics. Date: Monday, 09 June 2025 at 04:40 PM 69216r

mctfopt:


I own the JK BMS with 2A balance current. Pretty nice and versatile.

A neighbour bought the 300A Daly BMS, will arrive this week.

@mctfopt Want to delve into the world of lifepo4 in nearest future. Please what is your experience so far with JK BMS with 2A balance current.
Thinking about building bank of 16S in two units (280AH 48V config), with each string hooked on to a BMS. Plan is to parallel the string to achieve 560AH 48V config.

still available

Valto:
8pcs of brand new grade A EVE 280ah cells for sale.
Model Name:EVE
3.2V 280Ah
Internal resistance
≤0.25mΩ
4000 cycles
Weight-5.5kg.

8PCS of fairly used(still less than 80 cycles used) eve 280ah Lifepo4 Lithiums cells coupled with daly 150A bms with Bluetooth app and 3A super Capacitor 8S balancer.
whatsapp 0802-057-4628

[quote author=Saipro.

Oga Saipro, you're in the right position to answer my questions because you used 4 PC's of 12v 200Ah batteries (48v system) with 3 or 3.5kva inverter in 2015/2016.

How have you been managing you loads then because I intend to setup a similar system?
Have you been loading your appliances while charging (with solar s) or you've been waiting for it to be fully charged before loading?
If loaded while still charging, have you ever gotten full charge, say 52v or thereabouts?
Whatever you use to have in the evening, has it been sustaining you till the following morning?
My intending usage is:
Day consumption: 600w x 12hrs = 7200wh
Night consumption: 400 x 12hrs = 4800wh.
My system setup plan: 4 pcs of 12v 230Ah tubular battery. 48v/3.5kva inverter. 8 pcs of 320 mono s and 48v/60A mppt charge controller.

[quote author=Oshomo12

Sorry for the bolded. It was a mistake

Oga Saipro, may I have your mail address please?

saint2ace:
[s]2pcs used original fullriver batteries ..... 50k per piece or best price.[/s]
Used 1kva 12v Prag inverter ....... 55k
Used 2.5kva 24v prag inverter.......77k
[s]Brand new 4kva 12v standalone inverter with all accessories intact ...... 50k[/s]

All prices are slightly negotiable...... Serious buyers can me on zero8zero6742397zero.... WhatsApp only pls....


12v 1kva Prag inverter available

salam12:


@mctfopt Want to delve into the world of lifepo4 in nearest future. Please what is your experience so far with JK BMS with 2A balance current.
Thinking about building bank of 16S in two units (280AH 48V config), with each string hooked on to a BMS. Plan is to parallel the string to achieve 560AH 48V config.

Well, it works. It is capable of balancing (up to 2A) I checked with a clamp meter.

Also you can set your cut off voltage (if you don't like the preset value).

Valto:
wow. quite huge. 16S 300A UART R485 with bluetooth app worth over 150K. daly bms is always huge and rugged. the only downside is the low balancing amp. but that can be complimented by this 3A super Capacitor balancer

This is a beast. I guess useful for people using fairly used lifepo4 batteries, which may require such a huge balancing current.

olopan:
It's quite huge,

I have being having a thorough thought on

1. Balancing capability of the Daly series
2. Getting a Rs485/CAN comm via some work around to talk to inverter
3. Also ability to tweak the SOC to do local switching of loads et cetera.

If after my research the above fail to meet requirements then the expensive batrium with active community and CAN work around could be considered

But to the Daly as a balancing compliment a Deligreen 1s balancer would be a cheap way to save cost

All is a thought in process, taking it one step at a time

Batrium is the Ferrari of BMS and will require you sell some vital organs

isangjohnson:
[quote author=Dam5reey.

Boss, I intend to use 7200wh during the day and 4800wh during the night.

I'm yet to minus 50% dod.

Since will be using Solar during the day, DOD is irrelevant as you will be charging during the day and be using 4800wh in the night.

I will recommend 15KWH batteries bank preferably Lifepo4 300AH @ 51.2V

Solar 5 or 6 KW Solar array (minimum)

Inverter 48V..

isangjohnson:
[quote author=Saipro.

Oga Saipro, you're in the right position to answer my questions because you used 4 PC's of 12v 200Ah batteries (48v system) with 3 or 3.5kva inverter in 2015/2016.

How have you been managing you loads then because I intend to setup a similar system?
Have you been loading your appliances while charging (with solar s) or you've been waiting for it to be fully charged before loading?
If loaded while still charging, have you ever gotten full charge, say 52v or thereabouts?
Whatever you use to have in the evening, has it been sustaining you till the following morning?
My intending usage is:
Day consumption: 600w x 12hrs = 7200wh
Night consumption: 400 x 12hrs = 4800wh.
My system setup plan: 4 pcs of 12v 230Ah tubular battery. 48v/3.5kva inverter. 8 pcs of 320 mono s and 48v/60A mppt charge controller.

The s is too small to give you 12Kwh on daily basis..

You need 16pcs of 320w

WE BUY DEAD/SCRAP BATTERIES!!!

We also buy off scrap/dead deep cycle batteries from any state to Lagos ( & Condition applies) .

12v 200a ..... N17,000
12v 150a.......N12,500
12v 100a.......N8,500
2v 500a ......N5,500

If outside Lagos state , send the scrap batteries to your nearby Lagos park & get your payment alert immediately after confirmatory remarks from me with the transport company manager / secretary or driver .

,
Smartcell global services
CALL:: 081-350-31951
WHATSAPP::: https:///2348170385620

Nice idea, the only challenge with this is that if by 430pm there is no power from the utility, the loads will still keep taking power from the inverter which I do not want.

Barezzi:
I assume all your loads are on the inverter output.
I also assume your inverter switches to " thru" mode when connected to the grid.

Install a suitably rated 2NC or on the Grid supply to the inverter.
Install a timer switch and a victron bmv700 battery monitor in series with the coil of the or above.
Set timer "on" time to 10am and "off" time to 4.30pm.
Set bmv700 SOC "on" to 100%(battery full) and "off" to 80%(or any level between 50% and 100% that suits your fancy)

Grid > 2NC or > Inverter > Loads

Both conditions above must be met for the or to energize and disconnect the grid supply to your inverter.
If before 4.30pm the battery level drops below 80%, the or will de-energize and restore grid supply(if available) to your inverter.

A 2NC or is used to eliminate vampire current draw by the or at night when there's no solar.

Hmmm, won't this solution still allow the inverter to be charging when there is utility during that period of the day? It think it does.

Barezzi:
Alternatively, install a 2NO or on the output of the inverter if your loads are not normally on inverter e.g Aircon, fridges etc
Hook up a suitably rated ATS downstream of the or.

Inverter > 2NO or > ATS < Grid

Connect your loads to the ATS.
The or will allow or deny inverter supply thru the ATS to your loads based on time of day and battery SOC, else they remain on the grid.

You can combine both and get a PLC or node-red or discrete controls to drive all your ors. You can even incorporate current sensors to allow grid supply or disconnect the loads if consumption exceeds a certain threshold.

ojesymsym:
Nice idea, the only challenge with this is that if by 430pm there is no power from the utility, the loads will still keep taking power from the inverter which I do not want.


Hmmm, won't this solution still allow the inverter to be charging when there is utility during that period of the day? It think it does.

Thanks a lot
I just ed that I have a raspberry pie that I haven't used, I'd like to believe I will be able to deploy it for something like that.

Barezzi:
You can combine both and get a PLC or node-red or discrete controls to drive all your ors. You can even incorporate current sensors to allow grid supply or disconnect the loads if consumption exceeds a certain threshold.

Call/Watsapp us on 08066332919 for Industrial Power Backup equipment such as Emerson/ Vertiv/Liebert UPS, GASTON Battery

[quote author=Dam5reey.

Thanks for your opinion.

I've gotten 4pcs of 230Ah genus tubular batteries already.
I'll go for 48v/3.5kva inverter and 48v mppt charge controller.

I hope the 16pcs of 320w s will not be too much?

60A mppt charge controller.

Penuelseun:
Don't try microtech if your battery bank is low as it is a power guzzler, I personally use ceepro inverter, no load consumption is 8w, albeit no charger

How is your Ceepro?
Thinking of getting one, what sort of load can it carry?

Oshomo12:


The technology is over mature, getting old self! It is just the entering price point for us here in Nigeria, that is the problem.

You can start with Fangpusun, JUO for the inverter, I think he still has one for sale.

Yeah, that's true. But the price to benefit ratio is still a bit high for me. But its definitely going to be next on my next upgrade cycle. I have been seeing a lot of LiFeP04 battery bundles and DIY setups all over the place. However, a common complain is sourcing original Grade A batteries and getting ones with right voltage and capacity. Lithium is still a bit high level for me. Yeah, I have been following @JUO here on the thread and his page on Konga. The Fangpusun XTM inverter looks good but I am still skeptical on its quality and looking for more opinions.

OkoroPeugeot:


How is your Ceepro?
Thinking of getting one, what sort of load can it carry?

Working perfectly, been using it for more than a year now. Use for basic loads in the house like tv, lights, sound system, 300w blender

Penuelseun:
Working perfectly, been using it for more than a year now. Use for basic loads in the house like tv, lights, sound system, 300w blender

Wow nice.

No fridge sha?
Thank you would get it.

LIMITED QUANTITY AVAILABLE!

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6000 cycles at 80% DOD.
Datasheet available on request as usual.

,
Smartcell global services
CALL:: 081-350-31951
WHATSAPP::: https:///2348170385620

Dam5reey:
Since will be using Solar during the day, DOD is irrelevant as you will be charging during the day and be using 4800wh in the night.

I will recommend 15KWH batteries bank preferably Lifepo4 300AH @ 51.2V

Solar 5 or 6 KWH Solar array (minimum)

Inverter 48V..

I guess you meant KW

ojeysky:


I guess you meant KW

Typo,

[quote author=Dam5reey.

If I'm right, 15kwh battery bank should be about 6pcs of 230Ah which you suggested would go with 5k or 6kw array.

Back to my budget of 4 x 12v x 230Ah battery bank, could I get 10kwh daily production from 10 x 320w mono s with 60A mppt charge controller?

If I get fund to push my battery bank to 6 x 12 x 230Ah, how many s of 320w will be needed and how many kwh do you think it will produce daily?

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Solar floodlights with remote control, cable extension & mounting brackets:

100w FO3 LED . .. 30,000
150w FO3 LED .... 32,000
100w GO4 LED .... 28,000
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100w GO4c inbuilt wifi camera LED ...55,000

UFO aluminum 20w garden standing light "remote & motion sensor" ... 55,000

USA Trojan 12v 205a battery ... 220,000
USA Deka 12v 210a battery ..... 220,000
Fullriver 12v 200a battery ..... 165,000
Quanta 12v 200a battery .... 148,000
Ritar 12v 200a battery ......145,000


ERA 340w mono solar .. 75,000
Jinko 450w mono solar .. 100,000
Jinko 535w mono solar ... 120,000

Pro solar roof mount set which comfortably takes 4 units of 300-600w solar s "comprises of mount rails , mid clamps, end clamps , L foot" ... 35,000

SMK 40a 12-48v 150voc mppt .... 80,000
Fangpuson 50a 12-24v 150voc mppt .... 70,000
Fangpuson 60D 12-48v 150voc mppt .. 120,000
Fangpuson 70D 12-48v 150voc mppt ... 145,000
Fangpuson flexmax 80a mppt ..... 200,0000
Magnum PT 100a mppt ... 540,000

Epever 60a mppt .... 125,000
Epever 80a mppt ..... 185,000
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Must 60a fan cooling mppt .... 100,000
Must 80a fan cooling mppt .... 120,000
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Phocos 5kw made in hybrid inverter .. 520,000

Battery 24v balancer . . 25,000
Battery 48v balancer ... 35,0000


,
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CALL:: 081-350-31951
WHATSAPP::: https:///2348170385620

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,
Smartcell global services
CALL:: 081-350-31951
WHATSAPP::: https:///2348170385620

LIMITED QUANTITY AVAILABLE!

Shoto SDA10-48100 (48V 4.8kWh) Lithium-ion Battery is now available for 1.1m

6000 cycles at 80% DOD.
Datasheet available on request as usual.


,
Smartcell global services
CALL:: 081-350-31951
WHATSAPP::: https:///2348170385620

Please, I want to know if there will be any issue, if new tubular batteries are kept for long without use.

Depends on how long and the state of charge before you stop using them.

Generally, batteries shouldn't be left in a discharged state for more than two days or so

isangjohnson:
Please, I want to know if there will be any issue, if new tubular batteries are kept for long without use.

Please I have two questions for the experts in the forum
1) at what voltage is a 220ah tubular battery considered DEAD?

2) at what voltage is it expected for an inverter to beep "battery low" for the safety of the battery?