₦airaland Forum

Most of these are old price rates. Airtel unlimited 20Mbps is now 30k as against 20k quoted by OP

officialfestus:
To me, I no longer see need building the 18650 packs anymore, simply because the cost of building is almost equivalent to getting a new factory made LFP pack, and also the stress involved in building it.

Welcome to my reality, agreed that the power density is insane but the stress as well as the materials needed if one is to do it properly is on another level, with lifepo4 one only needs to add busbars and slap on a bms and u're done.

All in less than an hour.

And with the drastic reduction in prices of lifepo4 it's actually a no-brainer to move to the chemistry.

However, for small compact systems, nothing beats lithium ion's energy density if you have the time.

9ijaprince:
I just finished building a 7S 20P battery bank using 2.5Ah 18650 cells (140 cells total), giving me a 50Ah capacity. I’m using a 50A JBD BMS for it.

My plan is to replicate this setup four times to build a ~4.8kWh battery bank, which will be connected to a 3.5KVA 24V hybrid inverter. It’s a gift to a relative, who runs a frozen food shop.

I really hope it’ll be worth the effort. I have access to over 20,000 18650 cells extracted from EV cars, scooters etc.

This is nice, well done. Looking forward to ur further builds. The break up of the separate battery packs will ensure individual batteries are not put under pressure.

Elizkid:
I’m getting a Cworth 12v 100ah lifep04 battery on Friday for 190k to power a few 100w or thereabout load during instances when there’s no light.

Is it advisable or is there a ready-made DIY alternative for maybe higher but around the same price.

Go ahead, for the price very few brands can beat it. Just make sure it's for the proposed wattage range. Cheers

Xmen149:
That will restrict me to Airtel only (it doesn't even have strong network here.

See alot of reviews on YouTube about onn TV 4k box by Walmart (Google TV certified).

Does anyone have hands-on experience of this device

I read a review awhile back about the onn 4k streaming android tv box and it seems to be decent and is certified by google. However, I don't see it falling into your budget as the least I've seen is about 60k, nonetheless it's not a bad device.

Xmen149:
Between 20 to 40k. It's only onn TV 4k that I have seen within that range sofar with Google TV. Xiaomi s gen2 am seeing around 90k...gen3 am seeing 150k plus..

Just get an Airtel smart TV box, note that you have to use it as a router with an Airtel sim inserted as it doesn't allow for external wifi pairing.

Xmen149:
Just checked this the price is on a high side.

Is there another suggestion on a midranged pricing

Define high and mid range price tier.

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Musty112:
Pls does the airtel box have free to air channels? When there is no data on the for connectivity, are there free channels? Forgive my naivety pls

No to all questions, it only works with internet based applications and no FOA channels.

officialfestus:
so clean and neat. 👌
Doesn't look locally made at all






.

Thanks boss, i had time on my hands then so i took my time on the build. Hopefully, one day i'll do a bigger build, lifepo4 has made us lazy

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Still Available...... Send me your best price ..........

officialfestus:
nice build man, would have been very neat if it was welded.

Reminds me of a build I did some time back.

barezy:
Am building my self the biggest battery I ever build, am planning of adding 6pcs battery to each parallel, I will surely do that before I finish the setup.

This is quite nice, very neat. Can I ask why u didn't use a spot welder? Availability I presume.
Nonetheless the time and the patience no be here, well done Chief.

dollarnaira:
My oga meant 720w - 800w

Thanks baba, speed typing no go finish us. Modified

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.

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.

For those interested in the Delta 2, it's at an all time low on Jumia.

officialfestus:
Dear Diy lifepo4 builders,

I intend going into this soon as resources to build Lithium-ion is very costly now, and majorly most parts I used in building are always ordered from China.

From my own perspective or view, it seems lifepo4 cells bloat like the regular powerbank cells, what are the majors in place to tackle this issue?

Most battery chemistries will bloat when over charged, same is attainable with our banks but if care is taken to charge it as it should, you won't have a problem with bloating.

Have you asked why the chargers made for lithium batteries generally are Constant Current and Constant Voltage systems? Once it gets to the desired voltage it stops, no need for absorption. However due to the fact that we still use inverters or chargers (due to cost or financial restraint) meant primarily for lead acid batteries, we tend to slightly overcharge our batteries which in turn results to bloating. If we however stay within the range then bloating would not be a problem, but very slight bloating is expected and totally natural.

Intellab:
200a JK Bluetooth BMS with 1a active balancer from Valto. 3000w pure sine wave inverter.
I used 6mm cable. My battery is 314ah.

What the voltage of your system? 12v 24v or 48v cos 6mm cable is actually too small for a 12v or 24v, even a 48v system will struggle.

Also look at your bms setting to ascertain the settings for your charge and discharge cos most BMS come preset to just 40a.

Revert when u can.

Intellab:
Actually, I was trying to power a 1HP Astra Sumo pump using an 18650 battery pack.
After that, I built an 8kW LiFePO4 system and installed a 0.5HP Sumo pump instead.
The reason for the downgrade was that the LiFePO4 setup couldn’t handle the surge required to start the 1HP pump. So, I had to switch to the 0.5HP unit.

What's the size of the bms used in the build as well as your inverter size and voltage. Please also provide the max amp draw of your pumps if possible.

Most lifepo4 cells can handle output of 1c even though we're advised to run continuously at 0.2 - 0.5c, so if your battery is a 300ah battery pack you can pull 300a without issues, your only limitation will be your BMS and cable size.

So do provide us the above let's critic ur build

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Cosmopolice:
You see yourself. Small breeze blow, fowl nyash don dey open😂. Continue

One man has all the past questions and interview questions for all the oil and gas companies in Nigeria (Agip, Chevron, TOTAL, NLNG etc) and even federal government agencies. I cut cap for u

He has all the experience and can't secure the job himself. Let people continue to be decieved.
I stopped bothering a long time ago.... All the best to everyone 😊

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Queed:
New build: 3s32p, 864Wh, 500W pure sine wave power station with external battery support and monitoring via wifi. Just finished server and front end side. More updates coming in..

Nice one bro, this looks cool. Care to explain the circuitry ?

Intellab:
On 25v charge, it drops to 24v, then pump starts behaving as if I am trying to power it with a low current.
I will charge to 28v and try.

What's your panel configuration? Parallel or Series?

ezenwaez:
Not yet but very soon.

@ezenwaez please stop spamming the thread, lots of people have complained about this severally but you only pay deaf ears to these and continue on your merry way.

Note that you don't know it all and you've made lots of people lose track of useful information with ur constant post. Calm down.