₦airaland Forum

ojeysky:
Hahahaha..... Lol but it should be possible to do 0.2 to 0.5C, the higher you are able to deliver the faster you achieve full capacity.

That said, I personally won't go beyond 0.5C even if I have the means; doing 1C charging consistently may eventually tell on the battery life span. On my cell specs a 1C is called a fast charge while up to 0.5C is called a standard/normal charge. I prefer the normal

I am very grateful for this enlightenment.

BENARI:
Good Day House.

I need your advice please. It's possible that my request has been covered here already, but there are now 735 pages to read, and I've tried to skim through, but can't find any, thus my request.

I intend to install an inverter system in my house; for now without solar panel. My house is a 4 bedroom, and I've been told a 3.5kva can power the basic things, namely; lighting, four fans(54watts each), 2 tvs(55inch each), and a small scanfrost freezer.

I'll want to know what I'll require to achieve this, the cost if possible, and the most reliable brands in terms of inverter and batteries. Also whether to use wet or dry cell batteries(talking about durability and efficiency).

I'm sorry for troubling you.

Thanks.

Kindly quote me if responding to my request pls. That will be very helpful.

i don't know why anytime i hear inverter connected to a fridge, AC or any other heavy appliances and no solar panels connected i usually feel the person that invested his money n the installer may be disappointed at the long run.

essegis:
Since you know much about headway will a 200ah set up carry a freezer? I don't mind turning off the freezer at night while I run security lights.

See specs of freezer below......essentially 766kwh/yr

766kw is high ooo. 200ah is just the capacity. The craziness is in the burst energy, I watched a YT video where it did over 300A on dead short without killing itself. They would be very good for High Drain applications.

Guru's for a dedicated inverter room in a duplex where is the best place for locating the room downstairs or upstairs?

ewizard1:
766kw is high ooo. 200ah is just the capacity. The craziness is in the burst energy, I watched a YT video where it did over 300A on dead short without killing itself. They would be very good for High Drain applications.

He said 766kwh/year consumption ie total energy consumed in a year, not 766kw load.

DUNKA:
Guru's for a dedicated inverter room in a duplex where is the best place for locating the room downstairs or upstairs?

I'll say downstairs. It'll be cooler given that there is usually roof upstairs and even with ceiling that place is usually hotter without artificial cooling. Also if the system is going to be run with lead acid batteries, you are better off having all that load downstairs. Once saw a 20-battery 200ah upstairs in a location that later cracked the deck. It's an old building though and may not have been built with such load in view.

idris4r83:
i don't know why anytime i hear inverter connected to a fridge, AC or any other heavy appliances and no solar panels connected i usually feel the person that invested his money n the installer may be disappointed at the long run.

True, especially in location with little power public supply.

essegis:
Funny thing, with everything I bought I haven't still much surpassed the budget if I was to go for Lead Acid batteries. So I think those guys saying its almost same price in the long run are correct. Although, when COVID-19 is over and I start acquiring all the additives like BMS and charger it will become higher than the Lead Acid budget.

A 12v/60A LFP pack I got November last year stood at 80k. Just last month, I got a price list from a 9ja guy and in it he quoted 12v/50A LFP pack at 29k. Apparently it's becoming more affordable and more reputable coys in Nigeria are venturing into supplying LFP batteries.

A common lead battery of 12v/100A will set you back by 55k. With 12v/60A LFP, you get impressive performance shoulder to shoulder with those common 12v/100A deep cycle. Meanwhile you get extended life cycles with the LFP.

Although some Lead batteries claim 10 years use, but those are in the premium minority and appropriately expensive. However they still pander to the strict charging parameters that is lead chemistry Achilles which if you fail to stick to, compromises the extended life cycle promised.

@bolded is so true. A basic 24v BMS can cost 25k while another can set you back by as much as 40k, depending on capacity and added premium performances of course.

ojeysky:
As to shipping from AliExpress without using the DHL et all, there are other ways, ping me in the backyard

Abeg I need the "cheat code" too o. I wan be in the loop.

ojeysky:
Okay thanks for clarifying, about 200AH 12v battery is not a bad deal, though if you go with the prismatic cells you can get a better deal of a very good battery on Ali. Currently starring at a 16 units of 3.2 150AH which will be 600AH 12v for 1.8k (+1k max for shipping)

And na like say make I dey do hangers on abi shey na àdìmérù with your shipments o , whenever I order shikini stuffs that have expensive shipping.

essegis:
Freight forwarders oo. Leave all those thieving DHL and FedEx alone abeg.

UPS seems to be a less devil. A 110k naira (25kg net wt) gate opener shipped into Nigeria from Singapore en route China attracted around 18k charges with UPS while it was 32k with FedEx. Things are usually worse with DHL. Devilish lots.

ewizard1:
Since I started using my Lithium ion around July 2019, it's been running without a BMS an I have nothing to worry about because I knew what I did there. Even though I later got a Daly BMS from AE, I still didn't bother installing it. Already getting set on my 48v setup.

• What is the configuration of the 18650 pack you use without BMS?
• What appliances are on it?

ceaser:
Abeg I need the "cheat code" too o. I wan be in the loop.



And na like say make I dey do hangers on abi shey na àdìmérù with your shipments o , whenever I order shikini stuffs that have expensive shipping.

Bros that package is almost 80kg that's why shipping was estimated that way, paying below half the shipping price on AliExpress seems like a better deal o. However this is not the period for it, perhaps things will be clearer post covid-19

ceaser:
UPS seems to be a less devil. A 110k naira (25kg net wt) gate opener shipped into Nigeria from Singapore en route China attracted around 18k charges with UPS while it was 32k with FedEx. Things are usually worse with DHL. Devilish lots.

25kg for 18k total shipping sounds like a good deal then, it would have cost more with my alternate option or do you mean the 18k was customs fee?

idris4r83:
i don't know why anytime i hear inverter connected to a fridge, AC or any other heavy appliances and no solar panels connected i usually feel the person that invested his money n the installer may be disappointed at the long run.

Thanks for this insight. I'll probably hang on with connecting my fridge till I have my panels.

ceaser:
• What is the configuration of the 18650 pack you use without BMS?
• What appliances are on it?

24v System - 7s100p 4.6kw

Not very heavy loaded tho. 1.5kva inverter - All media appliances, 8 Led lights, 2 Ceiling Fans. My refrigerator is non-ES so I left it out.

mctfopt:
He said 766kwh/year consumption ie total energy consumed in a year, not 766kw load.

Yeah I know.

ewizard1:
24v System - 7s100p 4.6kw

Not very heavy loaded tho. 1.5kva inverter - All media appliances, 8 Led lights, 2 Ceiling Fans. My refrigerator is non-ES so I left it out.

You got 700 pieces of 18650 cells? Whao!!!!

Abeg point me in the direction where you get bad laptop batteries for cheap here in naija cos I'm thinking when I'm done with this present project na to carry 18650 dey play about remain. Build from handy packs to full scale systems just for the fun of it.

ceaser:
A 12v/60A LFP pack I got November last year stood at 80k. [b]Just last month, I got a price list from a 9ja guy [/b]and in it he quoted 12v/50A LFP pack at 29k. Apparently it's becoming more affordable and more reputable coys in Nigeria are venturing into supplying LFP batteries.
.

Does your contact have good new LFP cells for sale Or do you know any other person that does?

Contact us for quality renewable energy materials as usual !


Smartcell global services
Call:: 081-350-31951
WHATSAPP::: https:///2348170385620

BENARI:
Good Day House.

I need your advice please. It's possible that my request has been covered here already, but there are now 735 pages to read, and I've tried to skim through, but can't find any, thus my request.

I intend to install an inverter system in my house; for now without solar panel. My house is a 4 bedroom, and I've been told a 3.5kva can power the basic things, namely; lighting, four fans(54watts each), 2 tvs(55inch each), and a small scanfrost freezer.

I'll want to know what I'll require to achieve this, the cost if possible, and the most reliable brands in terms of inverter and batteries. Also whether to use wet or dry cell batteries(talking about durability and efficiency).

I'm sorry for troubling you.

Thanks.

Kindly quote me if responding to my request pls. That will be very helpful.

Looks like newbies ain't welcome here o! I was directed here from another thread to solicit answers to the quoted request, but till now, not a single response to my post.

A beg make una help na, or my in the wrong thread again?

BENARI:
Looks like newbies ain't welcome here o! I was directed here from another thread to solicit answers to the quoted request, but till now, not a single response to my post.

A beg make una help na, or my in the wrong thread again?

I think it is because your question is somehow vague. What is your budget? Are you DIY or will get an installer to help you? If you are using an installer, your best bet is to ask the installer to give you a quote. You can then bring the quote here for help.

BENARI:
Looks like newbies ain't welcome here o! I was directed here from another thread to solicit answers to the quoted request, but till now, not a single response to my post.

A beg make una help na, or my in the wrong thread again?

First an foremost, you will need to calculate the total wattage of all the appliance you want to power.

You only mentioned that of your fans which is 220watts in total; please get all others and add them together; an Inverter that can be at least 2times the required load will be best, so for instance your load is 500watts in total; you’ll need to get an Inverter of about 1000watts, it’s best than getting something just the same as your load requirement, in case of some minor addition long term stability of your inverter.

Now inverters are considered mostly in KVA, find an Inverter that is about the equivalent of 1000w
Which is about 1.2-1.5kva

1500x0.8 =1200w Inverter for instance( the 0.8 is pf)

Or

Converting from watts to kva, you will need to know the pf power factor of the Inverter you wish to get, but before then you can use 0.8


So for instance 1/0.8x 1000watts= 1250kva( you may not get the exact kVa, but this means you can get something higher or a little lower


Once that is considered; then calculate the number of hours you want to run the Inverter.

http://jekitech.com/battery-backup-time-calculator/

To check required backup time

For instance you found that a 1.5kva could power the house, then go to the calculator type in the ah of the battery

200ah for instance

On a 24v system; the calculator is will automatically make it 2 batteries, type in the load, then it will give u an estimate of backup hrs


Please if you have specific questions
You may also contact us on whatsapp 08031138665


I really will advice that you contact us; to work you through easily

unicmarket:
First an foremost, you will need to calculate the total wattage of all the appliance you want to power.

You only mentioned that of your fans which is 220watts in total; please get all others and add them together; an Inverter that can be at least 2times the required load will be best, so for instance your load is 500watts in total; you’ll need to get an Inverter of about 1000watts, it’s best than getting something just the same as your load requirement, in case of some minor addition long term stability of your inverter.

Now inverters are considered mostly in KVA, find an Inverter that is about the equivalent of 1000w
Which is about 1.2-1.5kva

1500x0.8 =1200w Inverter for instance( the 0.8 is pf)

Or

Converting from watts to kva, you will need to know the pf power factor of the Inverter you wish to get, but before then you can use 0.8


So for instance 1/0.8x 1000watts= 1250kva( you may not get the exact kVa, but this means you can get something higher or a little lower


Once that is considered; then calculate the number of hours you want to run the Inverter.

http://jekitech.com/battery-backup-time-calculator/

To check required backup time

For instance you found that a 1.5kva could power the house, then go to the calculator type in the ah of the battery

200ah for instance

On a 24v system; the calculator is will automatically make it 2 batteries, type in the load, then it will give u an estimate of backup hrs


Please if you have specific questions
You may also contact us on whatsapp 08031138665


I really will advice that you contact us; to work you through easily

What is the difference/advantage of a 24v system over a 12v system. Thanks

aorseer:
What is the difference/advantage of a 24v system over a 12v system. Thanks

The higher you go up the voltage the better the efficiency and the lower the size of cable you require, and the more flexibility with increase in capacity (both at solar and battery level)

ojeysky:
25kg for 18k total shipping sounds like a good deal then, it would have cost more with my alternate option or do you mean the 18k was customs fee?

Oh, my bad. Customs fees I meant. That's aside shipping.

ewizard1:
24v System - 7s100p 4.6kw

Not very heavy loaded tho. 1.5kva inverter - All media appliances, 8 Led lights, 2 Ceiling Fans. My refrigerator is non-ES so I left it out.

I still wonder how you were able to sail the tide with 7s100p 18/65/0s without BMS when you nor be winch.

Anyways, your username na "e-wizard" sha.

ojeysky:
Does your contact have good new LFP cells for sale Or do you know any other person that does?

Claims they are all new prismatic LFPs 3.2v/105ah. Few weeks ago he said he was hoping to clear some containers he has at the ports after Corona wahala. Lockdown has slowed business down as he couldn't ship to customers. I haven't gotten update from him for sometime now.

NB: The quotations he gave was pre-lockdown, pre-naira/dollar fight.

aorseer:
What is the difference/advantage of a 24v system over a 12v system. Thanks

When connecting two batteries together 12v parallel connection is usually better than 24v series connection.

harizonal123:
When connecting two batteries together 12v parallel connection is usually better than 24v series connection.

The inherent power in two batteries either connected in series or parallel is the same.

It's your system requirements that will determine if you need a working 12v or 24v.

ceaser:
The inherent power in two batteries either connected in series or parallel is the same.

It's your system requirements that will determine if you need a working 12v or 24v.

Yes it depends on your system but when it comes to lasting hours/ duration parallel beats series batteries configuration. The advantage of series over parallel is that it is used for operating heavy machineries. Yet to find a write up where series connection increases duration

ceaser:
Oh, my bad. Customs fees I meant. That's aside shipping.

Nah, leave custom fees oo. No be weight them dey use calculate am but amount of purchase. Government gives free clearing up to a certain amount but more often than not these international courier services cheat us out of it and even increase the ones being charged sef.

Someone has called me before one day I called their bluff to say I can actually come to their office to negotiate, that they can chop up to 50% off it. I nearly ran mad has I had already paid then.

ceaser:
I still wonder how you were able to sail the tide with 7s100p 18/65/0s without BMS when you nor be winch.

Anyways, your username na "e-wizard" sha.

It's isn't wizardry, it's why I said "I knew what I did". Tho I am planning to get a good BMS when i finally get done with my planned 14s120p because that would be running the entire home. But this corona ehn..