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Isangjohnson's Posts

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Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 11:46am On Dec 02, 2023
Please what is the actual capacity of this AC in watt?
I'm trying to check if 8 to 10kwh lifepo4 battery can power it for 4 hours.
I guess this is 2hp. Someone wants to power it occasionally for about 4 hours and this will happen only when there's a visitor probably in the evening time.

Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 10:29pm On Dec 01, 2023
bassdow:
How did you handle shipping. tried buying a couple of things at AliExpress, but the cost of shipping, was way more than cost of wetin I add to cart.

Atimes, it's faster, and neatter buying readyMade things
I've a shipping agent and I cleared the ones I bought in bulk by myself.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 10:04pm On Dec 01, 2023
bassdow:
did you purchase these online ?

if Yes, where ?
I bought them in China Boss
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 10:03pm On Dec 01, 2023
bassdow:
The initial comment never mentioned GRID was involved and I responded accordingly.


since NEPA is involved also, and the duration of power failure is short, then I would say no problem even though I don't see myself doing such.
Check the previous page where I responded to dacool1
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 9:55pm On Dec 01, 2023
bassdow:
na to avoid such inconsistencies, I automatically see such setUp as too small to power appliances such as Airconditioner, Refridgerator, etc.

it's grid tied (NEPA / PHCN) but how consistent is are they. Client wouldn't know how to economise between days of prolonged power failure from NEPA vs days they provided light over half of the day.

What happens days when the weather is too hot (too much sun no mean say solar panels go provide plenty current Ooo) or we have shorter day or when so much dust have covered the solar panels thereby further reducing output.

what about days they might not remember to quickly turn off the freezer, or they have something in there that requires preservation, and the freezer is not yet frozen, you see them deciding to run it 2 or 3 more hours just so the items in freezer don't go bad. of course they would believe it's just that one time.

See eh, edge cases plenty hence by the time you put a lot into consideration, you go just overSize am
I'm still finding it difficult to understand your points.
We're talking about practical here....
What will make 160ah 12v lifepo4 battery attached to 2 pcs of 345w Jinko pv with the support of nepa light to die fast?
Grid tied system is different from off grid system.
I've been running off grid system for two years now with 4.05kw era pv charging my 15kwh battery bank to full before 3 o'clock everyday except on raining seasons, even with the use of electric cooker, microwave, iron, freezer, ACs, TVs, pumping machine.
I discharged max of 40% every night....
If I was to run a grid tied system, about 2.5kw pv would have been sufficient for me.
NB: Every system needs management and understanding. Once you know the capacity of your system and you're ready to manage your loads, you're good to go.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 4:33pm On Dec 01, 2023
Bb007:
Please can you post a picture or the brand of the fan. I'll like to get one. Thank you
Any DC solar ceiling fan can still serve the same purpose.
I'm expecting some of these products next week.

Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 6:37am On Dec 01, 2023
Namzy:
Ceiling fan of 14w? how big are the blades?
I currently have two types in my house.

The first one is a 12v DC & 220v AC 50inch, plastic blades with rated power of 33w max for AC and 28w max for DC. It has 5 speed control on the remote with the lowest speed of 10w (this is the speed we normally use in the house). Middle speed is 20w.
The second one is a 12v DC & 220v AC 56inch, metal blades with the rated power of 45w max for AC and 33w max for DC. Remote speed control is 5 with the lowest speed of 18w ( this is the one we normally use) and it blows very well.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 8:27pm On Nov 30, 2023
dacool1:
It will work if grid supply will still be used but won't fly if it's totally off grid.
In order for it to work off grid you need more panels. In real life, those PV won't supply more than 400+ watts on a very bright day.
It's grid tied system Sir. The pv is even 435w 2pcs Jinko. I didn't check well when I mentioned 345w
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 7:36pm On Nov 30, 2023
Obnoxious2001:
Oh lie oh seas lie lie lie fine seas fine one.

I hope you can decode it.
Yes Boss
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 7:17pm On Nov 30, 2023
Obnoxious2001:
Which side of benin are you.
I can handle the project for you.

Am in warri cool
Please drop your contact number
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 7:15pm On Nov 30, 2023
bassdow:
me gan sef, seeing a 12volts system powering a Freezer is some how. Even if it works, you would overStress the batteries faster than necessary.
And the 2pcs of 345Watts solar panels sef is small.
Boss if you look at my write up again, you will see where I wroe powering 120w freezer during the day.
Even with my 15kwh battery bank, I put on my freezer by 8am and put it off in the evening....
What is the essence of stressing the battery when there's pv to back up my heavy loads during the day?
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 5:01pm On Nov 30, 2023
Masterdazhem:
Terrible power supply, i need a solar system badly
Benin city
Yeah sure I'll appreciate something within my budget (2m)
If you have good installer in Benin, please let me know.
I designed a small 12v 160ah lifepo4 battery with 1.2kva 12v Tbb inverter, 80A Felicity Mppt CC and 2 pcs of 345w Jinko pv to power 120w freezer during the day and 45w LG tv, about 3 ceiling fans of 14w each and few lighting points (energy saving bulbs) at night for my friend.
The guy called two different installers and he was told the system will not power the stated loads.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 4:36pm On Nov 30, 2023
Obnoxious2001:
LVD is 10.5.
It's not suitable for lithium battery.
Except your modify it externally.

You add a low battery cut off of the lithuim battery you want connect
10.5 Lvd is not bad 12v LFP battery bank.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 9:18am On Nov 30, 2023
There are a lot of messages one needs to ignore in this forum
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 3:30pm On Nov 29, 2023
Dam5reey:
Capacity is stated as 1600VA that is 1200W @ 80% PF
LVD used Lead acid parameters. 21/22V depending on Load.
expect less than 30watts.
if your LFP has BMS, go ahead ensure you have all protection set on the BMS, incase this inverter go do equalization at 30 days interval.
Thanks Sir
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 9:16am On Nov 29, 2023
Please what is capacity of this inverter?
Does it have Lvd?
What is the idle power consumption?
I know it's 24v system and I want to use it with lifepo4 battery

Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 12:09pm On Nov 28, 2023
Moneyboyz:
My 24v 5kw felicity battery is acting up.
It works well during the day but at night even without putting on a single bulb, it will go off. It's barely 2 years old.

I need a better recommendation of a 24v or lifepo4 ready made battery pack I can use for my system.
Can you give us the picture and let's see the particular model?
It works well during the day because the pv is giving the backup. Once the sun is off, the battery can't withstand the loads alone. I wish you were able to view individual cells performance.
Defective grade cells used in building the pack is the major suspect here but even at that, two years of usage is too short.
Abuse is usually brought under control via lvd either from the bms or the inverter. Dc circuit breaker if installed usually takes care of short circuit.
Two years of usage for lifepo4 battery is very bad. Lead acid battery is far better than it but one may think you bought fairly used one, probably the one with 2000 cycle life.
Sorry about the unfortunate situation!
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 8:20am On Nov 24, 2023
bassdow:
if you're in Lagos statte, go to Arena in Oshodi, or Alaba international, or somewhere at Surulere.

Me no know the kind chargeController wey una dey buy.

So many times, I disconnect my battery bank from the chargeController, while it's sttill connected to the solar panel, yet never experienced any fault. Same can't be said of a lot of chargeControllers out there.

if you can't afford buying brandNew quality item, at least try going for tokunbo/used quality item.


Oh just saw you meant your INVERTER, well the repairers plenty na. Just state your state of residence, or visit the locations I mentioned above and you would see lots of them there
Thanks Sir
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 4:18pm On Nov 23, 2023
The lightning hit this inverter. Please where can I fix it?

Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 5:49am On Nov 20, 2023
Valto:
change *single full voltage* on your bms app to 3.47v..nothing wrong with your bms
Thanks Sir
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 6:00pm On Nov 19, 2023
oloet:
I don't know why picture refused to upload, please send me mail at my username@yahoo.com with your WhatsApp number
I'll do that now Sir.
Thanks
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 5:59pm On Nov 19, 2023
Please, ignore the first two pictures.
These are the pictures I'm talking about.

Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 5:26pm On Nov 19, 2023
oloet:
It has to do with your SOC settings, here is my battery

Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 1:10pm On Nov 19, 2023
Please, those that are using Jbd bms should give me more education on it.
I attached 150A Jbd bms to 160ah 48v battery bank and carried out all the settings to the best of my knowledge.
The major challenge I'm having now is how to push the soc to 100% while charging. The soc usually stop at 98% with individual cells of about 3.4v each.
At this point, the individual cells will keep charging, moving forward to my set value of 3.45v each and the TotalVolt will equally move to 55.22v.
Why is the soc not moving to 100% as the individual cells and TotalVolt are moving?
At 3.45v each cells and 55.22v TotalVolt, the battery is fully charged and won't accept charge again. Once I noticed this, I would go to Control and click on Reset Capacity to push the soc to 100%.
Is this the usual practice in jbd bms?
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 8:06pm On Nov 18, 2023
bassdow:
FUNNY enough, I took no offence in what you said or didn't.
When I am in here, na to deStress maself. Moreover no be everyBody get strength to vex.

My response was more like You understood me, YET probably pretending you didn't so I speak further, BUT you forget say food don cost, so we dey talk small small nowAdays so as to conserve energy.

As for all the grammar and formular you write above, if we begin do like that, mean say we don forget say no be everyBody sabi reach such level.

For here, I prefer writing in ways even the DUMB ones among us, expecially us wey go backYard college, go grab.
if you begin state law, write formulars,, and speak big big gramar, most of us go loss.

Now all things bbeing SAME, it's much more efficient INVERTing from higher voltage, than from lower voltage hence 48-volts system is much efficient, than 24-volts system, and 12-volts system is more efficient than trying to BOOST from 5-Volts to say 240-Volts.
Those that are not interested in the practical physics may overlook it.
We're here to learn Boss.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 5:39pm On Nov 18, 2023
casualobserver:
True.

Interesting read that also shatters the misconception that testing for capacity is an indication of the quality of a cell.

A grade B cell can test for capacity and be dead in 3 years.

https://www.lifepo4-battery.com/News/EVE-GRADE-A.html
Unfortunately, those smart people are now replacing the barcodes.
I always peel off the qr code of some of my cells to check if it has been touched.
I've some Eve cells 280ah boldly written B on top of the qr code.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 5:20pm On Nov 18, 2023
Saipro:
Interesting. However, I concur with your publications. I've been on this path for over 25 years so my tenure as "gateman of the technology corridors" has given me lots of exposure. I have a stack of BYD LiFePO4 batteries bought off an industrial setup which was written off as end-of-life; they were cycled heavily and at somewhat high temperatures. Grade A batteries however.

A few years down the line and they're undoubtedly the best cost per Watt investment I've ever made in my renewable energy journey. I bought 3 sets for 3 different homes and everyone wishes they'd bought more. Fridge, freezer and AC in my house are permanently on. Whenever you see Grade A cells, grab 'em! They're rarely advertised for long.

EDIT: I should mention I charge at 1C up to 70% then gradually throttle down as they approach full charge. Every 4 months, they sit at full charge for a few weeks (top balancing) then are cycled between 20% and 85%. They almost never fall below 40%, even when I cook for our mini-parties (I use induction cookers).
If I may ask, how do you recognize grade A cells?
Dubious cells sellers has taken advantage of people's ignorance in this field.
As for me, I don't usually ask for grade A cells because of the high price. I only request for quality cells from the company I used to buy from. Once I charge the cells at 1C up to about 70% before I throttled down, discharge at 1C down to 3.0v and see 0.03v to 0.04v voldiff, then the cells are quality ones for me.
From my personal experience, irrespective of how well one top balance defective or bad cells, charging and discharging will not gets to 1C before you start seeing voldiff of 0.20v to 0.30v
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 7:34am On Nov 18, 2023
Johnchrix:
pls will u need a worker, I'm in uyo too sir.
Drop your contact, I'll call you Sir.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 5:54am On Nov 18, 2023
Johnchrix:
Boss you base uyo?
Yes Sir
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 6:18pm On Nov 15, 2023
FEGEITOK:
Those of us who personally import solar panels from (Lagos to other parts of the country) what reliable means of logistics do you use?

Reliable and cost effective because I got a quote of 20,000.00 from the company to the loading point in Lagos and another 20,000.00 to Abuja and I consider it unreasonable to pay the same amount within Lagos as I am paying to Abuja.



The route is Lagos to Abuja
It depends on the number of pv/size and distance.
Two weeks ago, I paid 25k to transport 20 pcs of 180w pv from Lagos to Uyo.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 6:14pm On Nov 15, 2023
Hybrid600:
Just a light question. What type of distilled water is best to use for tubular batteries, is it the ones in blue 1 liter bottle or the ones that are in 10 - 25 liter gallons ?
Containers are not determinant factors for good distilled water.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by isangjohnson: 8:36pm On Nov 08, 2023
Bgee77:
Can I mix CATL cell with EVE CELL together
Yes at parallel level. Meaning, you can intermix battery pack made of different brands of cells.
In other words, one battery pack made with Eve cells with its own bms and another battery pack made with Catl cells with its own bms/battery packs in parallel for a battery bank.
This is the best you can get from the mixture.

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