kristien4:
I have a serious dilemma.i want to do an upgrade,Im confused between buying a growatt 5kva hybrid inverter or a 120amp growatt charge controller. My cause of confusion is this. This growatt inverter can work without batteries, and secondly even while working with battery, can power the household load directly from the the solar panels during sunlight, while the reamaining power charges the battery. My question is can the external charge controller offset house load while charging batteries at thesame time? Pls i will appreciate a response..

there is always a twist with this so called inverters that can power your household loads directly with solar panels...

if you dont have enough pvs to cater for your loads during different weather conditions, it will still draw from your batteries.. by so doing your batteries will suffer the damages in the long run cos de are not receiving enough charge...

in summary have enough pvs....

This man.. u de play with fire.. u tink say bet9ja na ur mate... bet9ja has paid someone over 600m from multiple stakes with an online account, nor b hear say. A single ticket was splitted into multiple just by changing options
If u tink u won d cash without u exploiting thier system gud luck to you.

90m na chicken change 4 were bet9ja de...

Any inverter brand 24/48 (transformer based) that i can set charge current and low voltage disconnect. , Felecity seems pricey

fashrola:


Is this MTN FTTH available in all location?

nah....

spyder880:
Plastering of the whole fence walls ............

baba i greet u ooo.

U don fit get any information concerning this geothermal cooling of houses...

Penuelseun:
lol, I have a 12v 250ah lifepo4 system powering 2 energy efficient freezers and a small freezer simultaneously

what is your average curent draw from this battery

shopnig24:

20,000 for upto 20mbps
35,000 for upto 40mbps
50,000 for upto 60mbps

how do i get started. Jane is offline

shopnig24:


Yes
Now available
But very limited quantity

please let me not get confused here.. are u referring to the unlimited airtel 5g router that is based on speed plans?

Namzy:


Ceiling fan of 14w? how big are the blades?

i once bought 18w sef.. i think 40w is currently on d market

shopnig24:


Yes
Now available
But very limited quantity

rate pls

shopnig24:
Whats life without data and good internet access?


The free airtel smart box is still very much available

any update on the airtel 5g?

officialfestus:
ethernet cable.

ethernet cable you said? Can we have a pic of it?

shopnig24:
Hi everyone!
Please, if you got your ODU device from ShopNIg and you have any challenge with it, kindly reach us on 09120369712 and we will help resolve it as soon as possible and as best as we can.
Thanks.

boss wen d other device go de available.. i mean d airtel 5g

i think most of us will really appreciate it if we cant get to know the nitty gritty of this whole tin

officialfestus:
it has been created.

link pls so i can follow sharp sharp

dollarnaira:


@Officialfestus
This idea is brilliant.
Sincerely speaking this thread has lost its purpose. Am a diy lithium ion freak too.
May be we can open a new thread tagged:
DIY LITHIUM ION LIKE-MINDS
Kiekie don finish this place with yeye adverts.

lol.. abeg dat thread go de useful

kiekie1:


Am still in thought Chief

I don't blame some clients we come across saying;

- Install panels outside their roofs as carport/ swimming pool ports to avoid roof leakages , fire etc

- Install batteries , inverters outside the main building for similar fire reasons .

I've also come across several indoor installations running over the years without issues. Battery temperature sensor connected to ESS charge sources also need to be considered in most power system designs .
Guess lithium chemistry needs to be seriously studied especially now we've refurbished cells, substandard BMS et al hovering around the market esp in Nigeria . God help us

For every action, there is an equal and opposite reaction. For any battery to get into thermal runaway,certain criteria needs to be attained before such can occur.

shopnig24:
Thank you for this

We believe it's a general problem
They are currently working on it

when are you restocking the device sir..

obitobe:


I don't think you can change the charging current, what he needs to do it tune the generator up a bit for it to be able to charge.

pushing d generator further go make d avr quick go village.

You can still try to charge the battery 4rm d gen by switching off ur inv. Let ur load go directly to the gen instead of tru d inv y its charging.

One tin i have to understand about generators since i began to use RE, modt of them na just numbers dem de write 4 d kva. Dem nor reach capacity

abbeymighty:
Please can anyone give me review on affripower 2.5 kva hybrid , i used it with 3.5kva generator but it does not charge and we hardly have public utility.

try to reduce your charging current. Check ur present charging current

temi4fash:


Can you expanciate on this?

from your calculations, the CC cannot be used for the 2 arrays right

this is y i brought this to the elders in d house. I b tital novice. I can as well fo aheaa n use it cos i kno max i can see is 6A which will not hurn my inv as max it can take is 15A

dollarnaira:


You get time to they explain o.
There are fake and original humans.
Those who buy from you will understand.

valto battery de handle loads wella. One de site de work him arse out

casualobserver:


You clearly did not understand what I said. What I said is that I prefer a hybrid so it powers the load 1st and then charges the batteries with the excess and only draws from the battery when the solar power is less than the load or at night which is what you have described above. What I said is that if I decide to use a SCC to charge the batteries in order to allow for Temperature compensation either in addition to a hybrid or in conjunction with an inverter charger, you are drawing power directly from the batteries or wasting solar power.

It’s not a very efficient way of doing things because it means having to dedicate a set of solar panels for daytime consumption via the hybrid and another set for the SCC to ensure temperature compensated charge of the batteries. In addition you can’t totally stop charging by the hybrid so even if you limit the current to the minimum it will still send a higher than appropriate charge voltage to the battery. One might as well stump up the money for a Deye with BTS or get lithium. In any event should their be a need to charge the batteries via the hybrid either on cloudy days or at night we are still back to the original problem that all these hybrids on the market Growatt, axpert, felicity etc do not do temperature compensated lead acid charging and will degrade batteries in the long (maybe even short) run.

Abeg nor mind me jare. I wanted to edit my post but mtn n nairaland refused to allow me breath. I understood ur post clearly. Hybrid is gud wen u have enough pv in various weather intensity to cover ur loads if not it ends up substituting d renain current with ur battery. GOD B WITH U if u re using lead acid. They wont last becos de will receive partial charging cos of low pv input

casualobserver:


This is the problem I have with tubular batteries. The problem is that when charging a flooded lead acid battery, you are supposed to temperature compensate. For instance you are supposed to reduce the charging voltage by .005v for every cell for every 1 degree increase in temperature above 25degrees. If you have a 48v system that is 4 batteries x 6 cells per battery I.e .005 x 4 x 6 or .12v per degree above 25.

Tubular batteries should not be indoors but even indoors the temperature could easily be 30c. If they are placed outside the temperature could easily be 39c and often 35c. At 35 degrees you are sending a charge voltage to your batteries that is 1.2 v above what it should be. That’s what you call overcharging and this degrades and kills lead batteries. That is what leads to the bubbling sound you are hearing. You are effectively equalizing your batteries all the time….and giving off gases. Bubbling should only happen during equalization. Equalization should only be done once a month a or once every 3 months.

The problem is that most of the hybrid inverters on the market do not have BTS for temperature compensation. The only one I have seen is Deye and we all know deyes are expensive. The only way to properly charge your lead batteries is to use MPPT charge controllers as they tend to come with battery temperature sensors. The problem with charge controllers is that you are constantly pulling power from the batteries not directly from the panels with a hybrid. I would rather power directly from the panels and draw from batteries only when solar power is not enough or at night than constantly drawing power from and working the battery with a charge controller.

This is the dilemma I am trying to solve myself before I pull the trigger. If I go lithium I don’t want to get any of these cheap lithium batteries like Felicity (1st hand reviews/ opinions are hard to find and the few about are spotty at best) and I don’t want to spend 1.5-6m on 8 tubular batteries that may not last because they are constantly being overcharged.

I t will be interesting to hear from the experts how they account for temperature compensation when they 8nstall tubular batteries.

i beg to disagree on the part of drawing current from batteries. When ur pv surpasses ur current load it would power ur serup without touching ur batteries if in excess ur batteries will charge

richmond500:
The essence of these policies is to kill importation business and make Nigeria a production country.
Your business is not the only business that is dying, many business that depends on dollar has closed down and more will close too.

Time is coming when Naira will hit 5000 to a dollar. When this happens, foreign products will be difficult to purchase and we will have no choice but to buy made in Nigeria goods cos even a pair of foreign pants will be so expensive that only politicians can afford it while the rest of us will wear plantain leaves.

It's so annoying that the average secondary school student knows the dollar to naira exchange rate, that shows how we depend so much on the dollar and killing our own naira.
Until we patronize our own companies, we can't grow the economy, this painful stage is called the transition stage from foreign to local, the govt is not the problem but the time it takes Nigerians to accept the Nigerian goods will determine how long the pain will last.

In the next five years, we will fully accept our own economy and in the next ten years, we will have an economy that will beat France and Germany cos we have the market already.

Wat are u even saying. Where are the companies dat wants to do local production. Where are the raw materials. No ekectricity. Abeg nor annoy me this morning. Y is dollar to yuan not affecting the US economy. De judt imported how many SUVs. Wat stips dem from patronizing innoson vehicles or give him support to produce quality standards if de are afraid its not up to.

bassdow:


Would appreciate if you tell us how you arrived at this. that way, next time, he/She would have little reason asking such question.

As for me, so long chargeController max rating exceeds total Voc of panel, I just series everything.
That has added advantage of cooler cables

Make i chuk mouth 4 dis installation . Panels are 380w* 6 exulted eagle with Voc 67v and Isc 7a. Load is abt 900w to 1kw contnious. Batteries na lithium 24v 173ah. We plan to add extra 6.

With all d six panels battery turns out @ predefined cut off of 24.5v. At abt 5 to 6pm in the evening.

The problem now is mppt input current max is 15A. Going by 7*2*1.25(safety factor). Dat is 17.5A. Me n u kno say we nor go see 7A.

Me i was suggesting 6s2p. Another suggestion was 2 use a seperate cc n parallel d incoming six panels 2 charge up the battery.Was ur take oga

Justice629:
@bassdow
I gbadu your inputs here well well but as I no be keyboard warrior I say make I maintain for corner the look many of them do called solar pros here.
Little piece of advice- when you ready to go lithium no make mistake of buying from naija vendors because must times na worst grade cells them dey buy from China, my own experience still the pepper me for body now.

na wa. If d vendor de offline or online postcam make everybody see.

Anyone familiar with Air-conditioners calculations on inverters for both inverter n non-inverter types.

ameh99:
12v 50AH lithium battery packs now in stock

call/whatsapp: 09068448005

location: Abuja

u de rush de post .. u nor fit com defend urself on top cells wen u sell.. the funny tun abt lots like u is dat u feel u wont be caught.

I wonder wat is in those battery packs.

Make i even assume say na me de lie 4 d gp n u re d truth master.

Does dose cells look like a 6 month old cell? As a professor in battery chemistry. How do u explain such battery configuratuons u just made up there? How do u explain to this group thst u built a battery pack with mismatched cells ameh99. Dat ur bsttery pack arrived its destination n refused to turn on despite having chsrging voltage across d terminals. Thst i had to start buying tools just to retighten terminals just becos d cells were moving from one end of the casing to the other. The flexible wire u used as busbars cut off from the terminals because of the movement of d cells. Abi u don forget where u still ask me 2 go n buy spanner n insulate dem just to tighten the nuts on the terminals.

Lastly be bold enough to tell this group how mych you sold the so called 24v 200ah pack to me.

ameh99:

shut up for ones I beg you
is your prismatic cells li-on or Lfp?

you said I used li-ion bms on lifepo4..
tell say you wan learn work n...I'm still open

Oga y u de lie na? Apart from lfp 24v 200ah cells, did u not do another smaller pack 4 me? It was supposed to be 3 packs. What bms did u use in the smaller packs

ameh99:


can you post the picture of the claimed Li-ion bms please


I never wanted to explain anything here because you refuse to be reasonable
you bought battery pack from me and complained after 6months of use and I ask you to return it not ones not twice, did I not ask you?
but you said I should come down to Warri to get it .
who does that?
I should travel from Abuja to Warri to retrieve battery.
there and then I knew you were not reasonable.
when you started sending threats messages and insults I had to block you because you were really childish
i was ready to replace your pack but with the threat insult on daily bases.
I even gave you my address but I realized you are really childish
for calling the 8s bms Li-ion bms then your even dumer than I thought..

and you have been begging to teach you all those years, remember?

did u hear urself? 6 months you said? Well its am open forum so you can lie.. u did 2 pack of mtn lumunious cells. How long did it take u 2 refund d money for d last pack dat was with u. The laptop pack you gave to me. Whsy kind of chsrger did u ask to me to buy for it? A normal laptop chsrger dat does notin but chsrge batteries to infinity.
Even the mtn luminous pack you sent you asked to go n buy a toshiba laptop charger 15 abi 19v for dat matter 2 charge d cells. I still have d adapters.

Yes i was begging u to teach me but tank God u didnt becos i wud have brought in fire services in the near future. Even d job i almost gave to you , thank God the client choose another alternative. U wud have ruined my relationship n business with the client .

u used a bms meant for 18650 l-ion cells 3.7V to couple a lifepo4 pack

u sold damaged crap overused 80ah cells and matched it with crap 105ah cells to couple battery for me.