₦airaland Forum

dollarnaira:
It is a good buy bro.
100ah cells only cost roughly between 200 and 240k. Here you got cells, terminals, smart bms and casing. It is a fantastic buy sir. 4ah short is not a critical worry...

OCTAVO:
My impression of Henry LiFePo4 Lithium battery.
I bought 3pcs of 24v-100ah. To my utmost surprise, when I checked the capacity on their BMS app, I can see that the cells of each battery unit is not up to 100ah.
100ah battery should show full 100ah or 100,000mah. Infact, some brands will give you 103ah for 100ah.
It's either they sold used cells which are grade B, or the cells are new grade A but not complete.
You can see the screenshot from the BMS app below:
First battery's full capacity is 96,210mah (96.21ah)
Second battery's full capacity is 97,010mah (97.01ah)
Third battery's full capacity is 99,630mah (99.63ah)
If you don't mind the disparity, then you can buy from them.

saint2ace:
Nice one, this shows that we're becoming more aware of the thongs we buy and suppliers now know we can hold them accountable for products and services offered.
However, when it comes to batteries, especially lithium batteries paired with smart BMS the story might be tricky, this is because the readings as you have shown in the screenshot is directly related to the settings in the parameters. For dumb BMS's upper parameters are always set at 3.65v per cell which is 100% while the lower parameters are set at 2.5v per cell which is 0%, for smart BMS's the story is different as one can easily change this parameters to meet varying needs, producers/suppliers have been known to edit this settings to about 80% - 90% to extend battery life; am almost sure that's the case here.
Do us a favor and share the parameter settings on each battery so as to enable us confirm for sure that it was set for conservative use. Cheers.

dollarnaira:
1 set of 400w cannot charge 4kwh in a day.
Some 12v hybrid begin from 20v to 450v.
Everything is dependent on your daily loads.

I don't use hybrid. I make use of modular set up-
Cc and satchet inverters. Don't follow my course, my ways are unconventional.

OCTAVO:
Okay, screenshot attached.
1. Cell Overvoltage
2. Pack Overvoltage
3. Cell undervoltage
4. Pack under voltage

The undervoltage protection is 2.8v

ajabani4allah:
Cell UV values have been misplaced, the 2.7v should be for UV Alarm while the 2.5v should be for UV Protection and the 2.8v for UV Protection Release. This should be the reason why you are not getting the complete 100Ah but remember that this overall setting is an overstressed setting, it's equivalent to discharging and charging your battery from 100% to 0% and from 0% to 100% respectively everytime. This will degrade your battery and reduce its life cycle

tetralogyfallot:
Reconfigured to 12v for another nairalander.
This is 120Ah, 1.5kwh lifepo4 pack.

ChngedChnges:
Just get from valto. Check his jiji page. That's the only sure source with actual capacity I've seen so far

vanchi:
Link

ChngedChnges:
Age degrade lifePO4 faster than depth of discharge. Many experiments have shown that. I can give you some links if you think otherwise. DoD is only significant for lithium ion batteries not lifePO4

ajabani4allah:
Are you saying that discharging lifepo4 down to 2.5v everytime will not have significant effect on its degradation?

ajabani4allah:
Are you saying that discharging lifepo4 down to 2.5v everytime will not have significant effect on its degradation?

iraybuju:
That’s story for the gods oh, over discharging and over charging and charging with too much current will reduce the lifespan of the battery, any action that causes heat to the battery reduces its life

vanchi:
How much does this configuration cost

officialfestus:
Just in, 24v 8s 178ah lifepo4 with jk bms of 200a 2a active balancing and display screen.

Valto:
very slim, sleek and nice!

officialfestus:
Just in, 24v 8s 178ah lifepo4 with jk bms of 200a 2a active balancing and display screen.

eghos12:
Sharp nice work

officialfestus:
Just in, 24v 8s 178ah lifepo4 with jk bms of 200a 2a active balancing and display screen.

officialfestus:
Just in, 24v 8s 178ah lifepo4 with jk bms of 200a 2a active balancing and display screen.

cutefy:
Quick question.

Do you have to balance the cells first before assembling them together? If yes, how did u balance them?

If there's no need to balance them, does it mean, you can just join the cells together without balancing them while expecting the BMS to do the balancing?

Lastly, does the BMS features active balancing?

Sorry for the plenty questions

Penuelseun:
you can balance them yourself or wait for the BMS to balance them which may take a long time like a week, your BMS balance speed also depends on the inbuilt balance current. To balance them yourself, you connect all the cells in parallel and charge them together to 3.65v, or take a faster route, you setup the cells normally, charge them until one of the cells get to around 3.55v, then start charging the cells individually until they all get to around 3.62v, but this second method requires constant monitoring

cutefy:
Thanks so much.
Is there any special charger that can charge at 3.65v?

Penuelseun:
@valto sells chargers that can go that low

cutefy:
Quick question.

Do you have to balance the cells first before assembling them together? If yes, how did u balance them?

If there's no need to balance them, does it mean, you can just join the cells together without balancing them while expecting the BMS to do the balancing?the cells came balanced, with a volt difference of 0.003.
You can balance them by connecting them in parallel.
Yes the jk bms I used have an active balancing of 2A.

Lastly, does the BMS features active balancing?

Sorry for the plenty questions

officialfestus:
Splendid...

What did you use to top balance the cells.