₦airaland Forum

JUO:
first test. I think is better to stop at 3.1v. Let me observe the voltage after 3.1v

Wow this thing sweet , 1274Wh is it the juice you have used out of the system? I am in love with this

Please which meter is this that is displaying the battery and usage info

ojeysky:
Nominal voltage is 3.2, resting voltage is the voltage when the battery is not charging and not on load. That can be anything, but the figure when it's full should be around 3.35.

If you are doing 12v, you can get the makesky CC or any other MPPT controller. The inverter you are buying is okay, but if it has inbuilt charger, don't use to charge via utility as it not meant for LFP. I currently only have 24v LFP chargers may have a few more 12v in future but you can check jiji for those (if you are lucky)

Regards

Ok thanks my initial plan was to go 24V but lead acid, since i am going lifepo4 i had to settle for the 12V

The inverter does not have inbuilt charger it is a stand alone inverter

Ok the makeskyblue 40A or 60 which will be better as i don't want to use more than 4 panels 250-360w panel because of space, make landlord nor go vex for the roof mata

I will search for the 12V LFP charger

earthrealm:
The setup is 12v x 4 200ah Fla, 5yrs plus old....48v inverter

Wow that's great 5Years amazing thats 48V 200Ah bank

earthrealm:
ahhh, boss, you never sell that my morning star mppt cc
twas only 15k abi 20k that stood btw us and that deal then..

am still interested if its still available.

ihave observed 1804w from a 1680w (6 x 280w yingli panels) array, about 2wks ago, dropped to 1795w and held steady for over 3minutes.
this was hooked to a 25k 60amps powmr cc

Is your battery bank lithium or lead acid? 12V or 24V

JUO:
after a brief test of these little batteries, I am thinking of not selling anymore. They performed beyond my expectations. Imagine this little thing with some much juice without full charge

U be business man, u go sell na make i put ur money together first

Or na Idaboski go settle our matter

ojeysky:
You are correct except that it's not a full charge voltage but rather a charge voltage (bulk voltage or in lithium terms Constant voltage CV). This is typically charging the cells at voltage higher than the resting voltage in other to get enough amps in as the CC set-up permits. So you can charge a Lifepo4 up to 3.65v but the eventual resting voltage when it's full is about 3.35v..I personally don't charge up to 3.65 as it's not necessary, anything from 3.45 bulk will get your cells charged to at least 90% capacity.
I use the following at the moment for my 24v (due to solar CC float bug issues that puts my system into early float)

Bulk - 28.2
Float - 27.2 (note that you really don't need a float for LFP but I can't disable it unfortunately)
Battery cutoff - 24v

If you are only charging from utility your bulk would be fine at 27.6v.

Note for a 12v system you don't want to discharge to 10v, I suggest you stick with 12v at the minimum. If your system permits, 12.5v low disconnect is better. By the time you are at 3v per cell, you've already taken over 90% out of the battery

Ok so in calculating

Normal voltage 3.2V i.e 3.2x4

Or the

Resting Voltage 3.3V i.e 3.3Vx4

I will work on adding solar to the set up later, how many Watts panel do you think i need to plan for since i am going for the 12V lifepo4 bank

But i think i will start with Nepa changing first, bcus of Budget limitation, so what type of charger will you recommend?

This is the inverter i will be buying the 12V 4000W which is actually 1800-2000W in reality, its budget friendly and the review online seems to show it sine wave is actually clean

ojeysky:
Just imagine the level of inefficiency in lead acid. Apart from the fact that recommended discharge level of lead acid is 50% to get reasonable cycle out of it, you loose additional 10 to 15% due to Peukert effect. So when we say that a 100AH Lifepo4 is equal to or more than a 200AH lead acid[b] in practice[/b] I don't think we will be exaggerating

Now you see why i have been shouting lithium since last night, i was thinking of buying lead acid again ohh, my brother it is pure waste

If i can't get JUO deal on the lifepo4 i pray i do, na to connect with the guy that did you own be that.

I am putting funds together already

Money yab me when that ur deal was up. Lithium here we come

JUO:
bms

Ok so we will deal on the lifepo4 battery

JUO:
I don't have commercial quantity for now

The Battery or the BMS?

ojeysky:
While you can discharge a Lifepo4 to 100% capacity without major issues, it's not applicable to the voltage. If the voltage gets below 2.5v then the battery is toast. It's certainly doesn't look correct to me that you can discharge a Lifepo4 to bear 0 volts but you can discharge to hear zero capacity so long as you are still within the 3.6 to 2.5 band



Lifepo4 is one of the most interesting to put together, just like the lead acid indeed. Just don't mix up the series/parallel arrangement of the cells.

There is also one Specification sheet i saw of Lifepo4

It agrees with you submission

End of discharge voltage 2.5V

The 3.6V you talk about is it the Full charge limit


Am i correct

Lifepo4 for a 12V Bank

Normal Voltage 3.2V x4=12.8V

Full charge voltage 3.6Vx4=14.4V

Discharge limits voltage 2.5vx4=10V

Lifepo4 seems to look easy to put together just like lead acid battery

How true is this claim

LifePo4 battery can deep discharge till 100% DOD. Even the voltage goes down to nearly 0 volt shortly, it can still recharged to rated voltage

JUO:
yes, please note you need bms or you manage the battery through back door

4pcs of the Battery 3.2*4=12.8V

How much for the BMS

JUO:
If you are interested please indicate. Capacity is 105ah/3.2v. Price is 30k for less than 8pcs and 27k for 8pcs and above

If i need 12v will 4pcs be enough

JUO:
blame Nigerians for looking for gold in the toilet, battleborn 12v/100ah is $900, ruixu 12v/100ah (Chinese) is $700 but Nigerians want to buy 24v/200ah for $600. Felicity knew Nigerians will fall for it

I had to check up the 2 battery u listed Battleborn and ruixu omo Lead Acid fall our hand ohhhh

See lithium dey blaze

Lead acid was able to pish to 67Ah why lifepo4 dey do 93Ah and 95Ah


https://www.youtube.com/watch?v=WVxvBkeY0UY

JUO:
blame Nigerians for looking for gold in the toilet, battleborn 12v/100ah is $900, ruixu 12v/100ah (Chinese) is $700 but Nigerians want to buy 24v/200ah for $600. Felicity knew Nigerians will fall for it

Biko we like awuuff, hoping say our belle nor go purge

JUO:
My friend bought 2pcs of 25.6v felicity. According to him, two of them gave him about 6 hours on 800w load. One died after 5 days. Cheap bms

5 days? Hope it wasn't the cell that dead or it is BMS and the cells?

GeorgeD1:
suddenly it feels like dry season all over again.
with daily harvests topping 42kwh and instantaneous breaking the 10kw barrier....
indeed, the sun is the answer!

This is what is called Solar Energy. The rest na Sol nergy

lele4u:
Brothers I have discovered something. Using DSTV decoder for FTA is enjoying. They have a good tunner which can stand the breaking of nigcomsat 42.5e. you can try if you have a dstv decoder. FTA rules

How did u set it up to work with free to air?

Any lithium builder in Naija abeg i want to learn work


https://www.youtube.com/watch?v=PVnQ87Fvsk4

this people should not copy our NEPA ohhh


https://www.youtube.com/watch?v=HFHDpErtNP0

ojeysky:
It will be a miracle if 500k does that reliably

Yes ohhh. Is not even enough, bcus that is the boat i am in right now

folash:
Please how much is it going to cost to set up a solar inverter that can conveniently power a 43" led tv, 2 standing fans, 6 energy saving bulb, a freezer, and can last for about 12hrs a day?

Start thinking above 500k first

Battery
Panels
Inverter
Charger controllers

Even with the cheapest chiko material

hotdealz:
Do you know he has bought about 10 of those same batteries from me but complaining about 4?

Bro if i get somebody when go buy 10 of my items from me, wen some get issues i will definitely not leave them alone, bcus those are people that can help me sell.
Return match for biz na normal thing

Just work things out with the guy, don't let him bear the entire cost of the refund alone abeg

U check am out, if he had to refund the buyers alone is it good like that?

If he also refuse to refund the buyer is it fair to the buyers like that?

hotdealz:
I was trying to understand what went wrong because I actually tested and charged the battery. So what went wrong?

A good backup Laptop battery without factory fault and new stock will not die under a matter of days even if it is manhandled

Worst case scenario the backup time will be short

U confirm u tested the battery and u charge to 100% that means u gave the battery its first charge, then such battery should be able to withstand some abuse afterwards

But note the issue now is that battery is not taking charge not that the backup time is short

That certainly means those set are bad battery

The Alaba seller know thats why he didn't give u guarantee.

Jefferyzz:
But let's think about it. 4 people for Christ sake. 3 of the 4 are in ibadan. N I told u dey all are using original follow come charger and u said maybe it a 65wh charger n I said 1 of them is truly using a 65wh but others are 90. how does that explain why the battery went off. And I don't believe it's possible for you to drain the battery twice for 6 batteries oo. On my PC while playing movie the battery dey show 28hrs. Unless u took it home for days and drained it then recharge.

Exactly my thoughts

Even wen i do test batteries for customers, test to see if it can take charge for some minutes then remove charger

hotdealz:
It happened just the way he said it.

These are not batteries that was picked from any of the pickers. They all came from Alaba international. When I asked for written warranty from this seller, he said he doesn't accept returns that I should test the battery before buying. I did tested all the batteries by draining them on laptop and recharging them to 100% with genuine Dell charger before I paid for the batteries.

When OP bought these batteries, he never asked for warranty also, I don't understand how a battery I drained and recharge twice to 100% would suddenly drain and not charge.

OP is not the only one that complained. A guy in Ogun state also complained too but at the point of sale, I noticed the guy in Ogun state is using a Chinese knockoff charger which I advised him against. Cos from experience, I know such charger can damage battery or laptops charging IC.

Now the seller has refused to take back the battery insisting I tested before buying and not willing to refund me. My profit selling this battery is 2k per one. How do I cough out the money he is asking for?

The Alaba seller gave u his condition, u should give ur customer same condition too

If it was used battery i know for sure one can't return after tested and working ok

But for a new battery there should be some grace period like 7 days, bcus the cost for a new battery is high.

But i will like to ask how did u drain these batteries twice and recharge them back to 100% u spend full day there

justcallmenuel:
Text me on WhatsApp 08168986461 so I can send you the pictures

Upload price and picture here .make others see na

MorataFC:
Tammy what?
Efulefu striker.

leave our Guy na

hensben:
We need a strong CDM that can really play with Kante, a quality CB that can read the game from the back and then a good LB. With this signings we will be competing for major titles in the nearest future.

Lampard is still on the market for new left-back

Oasis007:


Easy Fam, sheathe your Sword, ain't here to duel with you. Timo is signed as a possible Replacement for Giroud, not to be dragging Wing(s) with Pulisic, Willian, Pedro, CHO, Kennedy and Co..... IMHO.

William and pedro will leave the club after their contract expires oga

ohizzy:
Boss, I for one get your point stating room should be given to both parties and I don’t dispute that.

My concern came from the experience I’ve had as a buyer. 1st selling Locked iPhone 11 for that amount is wrong, then comes the post modification. Lastly you took about 6hrs to respond that’s enough time to cook whatever story.

His silence was the major issue here.

All the same pple shouldn’t wait for matters to get here before it gets resolved.

Finito!!!

At the bolded that should be the koko. Buyers don't pluck money from trees, for one seller to sit down somewhere comfortable when deal didn't go as planned