₦airaland Forum

Oshomo12:
Why would you want to discharge led acid battery(be it flooded, gel, AGM, mtn etc) to 70% dod?
For the record, the safest Dod for led acid is 20%, except u want to change it every 2.5yrs(for a very good brand ni o).

I think you are confusing things bro,


70 % DoD simply means using up only 70% of the capacity of the battery


I believe you are talking about SOC, it’s just like the reverse.

You can use this calculator to check how Long your Tubular and Deep Cycle battery should last @ 70% DoD( worst case scenario).

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

tonididdy:
I will write to you in the morning. thanks

That’s fine sir

tonididdy:
hi earthrealm thanks for taking out time to quote me. I really appreciate.
I want to do a fresh setup.
the only thing will go to the new setup is my (3) 150w panel.


Shalom.

I want to know inverter, SC and battery details and possibly refer brands for me (pocket friendly durable brands pls).


the photo is my current setup.

I am willing to take you up on this, give you professional advice on what exactly you need to do to revamp your set up, and get a better setup with optimum performance, using durable and strong system design and devices.

Whatsapp or call 08031138665

Expertt:
I already have 25kva diseal Gen, am planning for 20kva Inverter but I need to know the number of 200ah batteries and 300w mono solar panels that will be able to run 12kw load for at least 12hrs

Hi, good evening... first and foremost, please take your time to plan this setup, it’s an investment you won’t wish you didn’t do well enough, an again opinions won’t be enough, you need to be convinced also that the final plan will work. Well

It may not be convenient for your 25kva generator to power 20kva Inverter, considering other load to power.

You could chat us up on whatsapp; 08031138665

www.jekitech.com

Skyclub14:
Hello guys , i would like to know the cost of getting a 24/7 solar inverter electricity , appliances to be used on the inverters are 1 ac gencool, 55led tv,1thermocool deep freezer, 6 energy saver bulb,1 ps4,1 laptop,1standing fan,wifi router.. Thank you

Good evening sir, apart from telling contractors that you relocated( I understand that you are trying to be free and be opened, so you get good answers that fit your need, as advised above, please watch out for it)

I am willing to help you with free consultation on a typical system that works greatly and effectively, with a solid experience and track record in the solar and Inverter industry. You could check up my username on Nairaland search.


Not just another marketer, but willing to take my time to give best fit advice for free, even you don’t plan doing business with us


www.jekitech.com , whatsapp or call 08031138665

dahaz:
Pls what direction is best to place a solar panel?
Note: am not an installer just been curious.

You see am looking forward to even really talk about this thing.

Many people just buy panels and install, not all roofs are effective for solar panels, I mean not all slants are good for best or highly efficient conversion of power, some roofs are very slant that it’s almost that you can’t climb except you use a belt hold at locked at the top, (almost strait roof), but we see people place many panels on such roof, certainly it won’t convert effectively, only iff more panels are added to it or a better construction is done on the floor or on the roof,

Slants

Every slope position as an overall effect on the conversion of each solar installation, so there is an exact slope that gives most accurate or almost-best results ( luckily some roofs are just great)


Note: in respect to your the position of sunrise and sunset in the area

So while venturing into solar please watch out for your angles, for proper and efficient conversion.



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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

It’s one thing to get a skilled engineer; another to get a power partner; that will stay with you till the end, when the times are tough or when the road is smooth.

With us, you are rest assured to get your power story changed

Our supported products and services we offer are key to sustain your alternative power needs


Free consultations; Sales and Delivery of Batteries, Inverters, Solar Panels and professional installation.


www.jekitech.com or whatsapp 08031138665

ojeysky:
You think so? Well I would have said the same few weeks ago until I saw my inverter pulling a loss of over 100w and another inverter pulling just above 20w under the same load condition so yes 0.8 can't be applied to all set-up but it's not necessarily "too high" a figure for planning.

Ok, I get your point, I was particular about the battery performance level, and not necessarily the type of Inverter, in my post I spoke of the case where you can get to know it’s pf for that particular Inverter.” Like a typical mercury 2.4kva Inverter runs on a 0.6pf, some inverters May be more above that, so for an ideal situation the battery should last as long as that, but the case of efficiency is now dependent on the Inverter make or brand, and how many of its power is lost. Truly due to losses there certainly can be variations in time. I agree with that.

tetralogyfallot:
60% dod is 120ah
Therefore 120ahx12vx0.8=1152watt hour
Then to get the number of hours =1152/140= 8.2hrs
Note: the 0.8 i inserted is cos of energy loss and electrical inaccuracies. U can only get 8hours of 140watts energy bro.

Hello sir, your 0.8 pf for battery conversion may not be necessary here, the battery surely as it’s dod, which serves as the state of efficiency; coming up with a 0.8 loss may be misleading how about if the pf is 0.7? Or 0.9? Only the manufacturers can provide you with an efficiency which is called DoD or you can get that from the Inverter manufacturers as pf 0.6/0.8, so for a good battery your 0.8 may not be required, if there must be Losses like I said 0.8 is way too much to insert by ourselves; except it’s adviced by the particular battery or Inverter brand

Efficiency of a battery is Dod not pf and that’s why from 200ah you got 140ah at 60% dod of efficiency

LAYMAN SERIES 1. — “what is AH in Battery”
In this series we would be providing a layman’s knowledge so as to quickly grasp the concepts of Inverter battery rating in AH other wise known as Amp or ampere Hour. So let’s begin

What is the meaning of Amps

Ampere is a unit of measuring current through a conductor, as meter is a unit of measuring distance of one point to another, so we take water in a tank for instance( note that water is measured in volumes or for the purpose of this tutorial we say “a cup container”) let’s assume that the water tank is just about the size of a regular tank and the cup container of about 100 times fills up the tank, now when you open the tap and take a cup of water out of the tank and fill up your cooking or washing buckets( which stands as load)


We assume 1 cup is same as 1A

So how many amps remaining from the filled tank, your guess is as mine 99 right? Yes.

So what is “AH” or “CUP.H”

This means how many cups fills do I need to do to exhaust the (in this case 100cups ) tank in 1 hour, in this context, it means 100A or 100Cup fills the requesting loads or buckets, so to fill a cup once, twice … till 100 times can be completed in 1 hr, in order words it will 1 hr to empty the tank in that steady rate... see more


Have any questions? Please ask

How we delivered Solar Charge Controller to a Nairalander in hours **Free Delivery Package**

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With Jekitech.com customers are first!
Customers relationship is key.

Take advantage of the free Battery Backup Calculator

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Deluxe8000:
How true is this statement?
A new inverter sealed lead acid battery of 200ah will carry a constant load of 12amps(140w) for 10hours at 60%dod.

Hi, Yes it’s true

@ 60%DoD, your battery is typically 120AH
140watts = 12 x I
I=11.6667A
120Ah/11.67A
10hrs and some minutes


www.Jekitech.com call or whatsapp 08031138665 for free consultations|Sales and Delivery| installations

Dam5reey:
Stop misleading beginners, Try to explain what they must know.

So you are saying I can run 1000watts load on 100AH batteries, run for 50 minutes and still have 30% SOC. Without considering, battery chemistry?

It may be achieved, however on LifePO4 or equivalent add such notes.

Thank you Dam5reey for the notice to be clearer we would take that into consideration.

We have no intentions to deceive anyone; the calculator helps everyone benefit from fast calculation, and ease.

But note that the function of battery chemistry is highly dependent on the Inverter, a regular Inverter as a guideline of usage for every battery, so what does that say, if I where to use a 1000watts Load, it certainly would be an Inverter way Bigger than that, and the most standard Inverters are designed with the consideration of battery in mind, so for a 1000watts Load The Inverter May be about 2kva and above which says 2batteries(24v) why, even if it is 12v, the protection of a battery is not dependent on the battery circuitry, but on the Inverter.


But assuredly we would give some instructional note on the webpage, but it doesn’t rule out the correct calculation of the calculator.

Finally, every battery as a discharge rate that should come with it; such as 200A at 10hr or 20hr, meaning this battery is safe in discharging max 20A in the space of 1 hr for the 10h rating, so certainly the guidelines of battery discharge rate should be followed as specified for that battery.

For technical and educational purposes, it’s accurate and valid. The calculator is to ease calculation and not too exclude professional advice
Thanks bro

unicmarket:
If I understand you correctly; you are only looking for a stop gap, till you fix your Inverter; so need something little or cheaper, your option is to get the said Inverter; like I said if you can monitor the discharge reading so that as at 11.5v you put off the Inverter manually (for the mean time) , Then you can go for it.



Post Modified***

I just modified the post

olaolu11:
Check my signature. I have been completely off grid for over a year now and will be until the transformer inmy area is repaired.
I do not need the inverter to charge, my panels will do that via the charge controller. All i need the inverter for is to convert dc to ac power.

If I understand you correctly; you are only looking for a stop gap, till you fix your Inverter; so need something little or cheaper, your option is to get the said Inverter; like I said if you can monitor the discharge reading so that as at 11.5v you put off the Inverter manually (for the mean time) , Then you can go for it.



Modified***

unicmarket:
Oga Laolu, is the charger part of your bad Inverter still working?

If it was temporarily you could use a ups to power the tv from the battery (12v) while the Inverter acts as only a charger

But I don’t advice the use of that Inverter; for the health of your battery in the long run. And if per adventure you get it, then it means you must monitor it when it’s charging and also when it’s discharging to know when to cut it off( which is practically impossible in all cases; some times you may forget) meaning you may need to attach a meter to it so as to monitor.

But bros I don’t suggest that Inverter, there could be other brands; it’s risky

U could also check the details of your battery; it may support the charging and discharging range., please check the side of the battery.


Like this example of a ritar battery
But I can tell the discharge cut off voltage for this is not 9.5v, it should be about 11.5v

olaolu11:
All I need is something to kite me over for like say 2-3 months. I am married to my TV and can't afford to be separated from it for that long and I am averse to generator now. I have DC bulbs installed for light and DC fans. TV is my problem now.

This has got me thinking. I have think I read someone talking about converting the dstv decoder to battery powered.
This my thought process is not for this platform. Anyone that can link me to where I can get answers.
His is hat I am thinking;
Dstv input port is DC(the power cord converts AC to DC to power it, right?)
So I can get power it with 5v 2amps from the cc.
I can get a 10-15 inch monitor that has DC port.

If the above is possible, then I am good to go. Pls am I making sense? Advise urgently required o, abeg.

Oga Laolu, is the charger part of your bad Inverter still working?

If it was temporarily you could use a ups to power the tv from the battery (12v) while the Inverter acts as only a charger

But I don’t advice the use of that Inverter; for the health of your battery in the long run. And if per adventure you get it, then it means you must monitor it when it’s charging and also when it’s discharging to know when to cut it off( which is practically impossible in all cases; some times you may forget) meaning you may need to attach a meter to it so as to monitor.

But bros I don’t suggest that Inverter, there could be other brands; it’s risky

You can easily check your expected Inverter backup time.
Take advantage of this calculator

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

sureboykris:
Thanks
Someone told me that charge controllers must be used with every inverter so I've been confused

No sir, most Inverters come with their inbuilt chargers, like this modified sine wave mercury 2.4kva, is all in one; you don’t need a charge controller. Your batteries are safe with it

olaolu11:
Thanks. I already opened the inverter and checked even before you suggested it. I went back again as advised but did not find any sign still.


Now I am stuck with no light, no TV, for God knows how long.
How good is this suoer 1000v inverter? And is it modified or pure sine wave. I am thinking of getting that and using pending the time I will get 24v inverter for I have been thinking towards 24v inverter before this fiasco happened.

If it’s something like that you are getting; the main issue I saw with it is that, the discharge cut of voltage is too low; and can in the long run destroy your battery I think about 9.5v for a 12v battery

And it seem to over charge for some battery ratings, up to 14.6v or 15v thereabout (absorption charging voltage) which is too high for many battery brands, the Inverter is quite cheap; only that it’s relationship with batteries can be alarming.

olaolu11:
For a suoer inverter, what is the implication/effect aside the humming noise on appliances?

If it’s something like that you are getting; the main issue I saw with it is that, the discharge cut of voltage is too low; and can in the long run destroy your battery I think about 9.5v for a 12v battery

And it seem to over charge for some battery ratings, up to 14.6v or 15v thereabout

sureboykris:
Good day.. Please I've 2units 200 amp batteries.
I need inverters. Maybe 2.4kva... I've been seeing charge controller om nairaland. Don't know where to get one or if it's necessary since I don't have solar panels.
Where can I get good products at good price.
Someone should please help

Good morning sir. You can check out www.jekitech.com


You may only need an Inverter. Except you have solar panels

or whatsapp or call 08031138665 for sales|delivery and free consultations.( self installation assistance)

ayo1984:
I have 5 (100 watts, 12v) solar panels connected in parallel for a single battery. I just bought a new battery (I am thinking connecting the solar panels in series)

Good evening sir...

That’s the thing, your connection is mainly a function of your solar charge controller’s input range; so as not to surpass the max voltage thereby destroy your cc, so please specify your controller if you’ve gotten one,

And also specify the Open circuit voltage of your each solar panel. (Label Right behind the panel or better still take a picture of it) Ensure when you connect in series it does not reach the max of the the cc input voltage.

www.jekitech.com, call or whatsapp 08031138665
Free consultations | sales and delivery

ayo1984:
please is EPEVER MPPT Charge Controller 30A 12V/24V okay?

It’s generally a good controller, what is the size of the panel array you are using it with, and please ensure you follow its guide lines(user manual) for better performance of the controller.

Jekitech.com, whatsapp or call 08031138665
Sales and delivery | Installation|Free consultations

Contact www.jekitech.com; 08031138665, whatsapp or call, we offer free consultations this period.

ayo1984:
please house how much is 30a 12/24v solar controller?

Good evening... you can contact us
www.jekitech.com; 08031138665 whatsapp or call
-free delivery in lagos.

olaolu11:
It is adequate today, but tomorrow? She has a fridge which she will want to power tomorrow when she begins to enjoy solar. We are only trying to avoid purchase of another inverter in the future.

Ohh ok, I get, I don’t also support are use of that 500watts Inverter, if there is a good one of it, why not;( she can get the 500watts), the client should know or ask in that case, that may only be what she wants to power with the system, we could have suggested also 2batteries, incase she wants to add more fans and or some more laptops to run; so if she as a mind to scale up later; she should have stated or ask so that we can help better.

As a matter of fact the Inverter still as at most conveniently an extra 100watts to spear for other loads.


That’s exactly what I think sir

Please incase you plan to scale up later for load, please note it ma

Thanks I greet o bros

ololadeajayi:
Good Evening Bosses,

Please I need clarification on the illustration below.

I’m totally new to solar system. The transformer in my area got spoilt so I need a solar system and I have a standby generator for my fridge.

What I want to power with the Solar System are:

1. TV LED - 30 Watts
2. Table Fan - 25 Watts
3. Standing Fan - 15 Watts
4. Dstv Decoder - Unknown Watts
5. Bulbs - 60 Watts ( 15watts * 4pcs)

Below is the solar system they recommended for me which will arrive after this pandemic by God’s Grace:

1. 250 Watts Solar Panel - 2 Pcs
2. 30amps 12V (PMW) Charge Controller
3. 500 Watts Inverter
4. 200 AH Battery - 1Pcs

My questions are as follow

1. How many hours will this solar system power my gadgets before it runs down?
2. Am I good to go?

Thanks in anticipation.

God bless!

Cc: unicmarket mctfopt niyiomolyunade ceaser efuro ojeysky olaolu11

Good morning madam

They have done justice to the question o,
But I just want to add a little,

Your load is about 140watts altogether

And assuming your battery is 70% Depth of Discharge which means 70/100 x 200ah , 140ah usable current in 1hr

And this means your 140 watts can run for about 12 hrs

But if at worst your DOD(depth of discharge) is 50% then like they said; it will be about 7hrs backup time

So try and confirm the dod of the battery you are getting


Most people prefer to use MPPT rather than a pwm because it is more strategic in converting excess power to charge the battery, while pwm may just waste the excess power( what does that mean?) when a pwm receives 40v 5amps, from solar panels “for instance”, to charge your 12v battery, it only takes about 12v and the 5 amps even if the battery is needing more at that time, so what happens to you 28v( certainly lost)

But an MPPT charge controller or cc for short converts the excess 28v to amps so as to charge the battery more effectively
So it then charges up to 12v , 16amps (wow)
So little power loss, and your battery charges most effectively

Now to the choice of your Inverter, please be particular about the cut off voltage( am assuming it’s a power Inverter) some of them, their cut off voltage may even get too low that it can damage battery cells. By cut off voltage I mean, the voltage of the battery at which Inverter will go off when the battery battery is low.

And lastly personally I think 500watts solar power is not bad for your load, I think it’s Just good enough, you may choose to increase it, but with a good cc you will get optimum charging power.

Thanks

www.jekitech.com; whatsapp or call 08031138665

n9jaboy:


I guess I am on my own

Please can you clarify your question?

2 150ah battery ( auction, you mean— used?

Do you mean you have an Hybrid Inverter?

And if this is what you mean,

It’s not usually correct to measure a used battery back up time; why simply because we may be able to tell it’s efficiency but I will state it’s ideal
Back up time for a five numbers of a 30watts fan
Which is 150watts

About 23-24hrs backup if battery is new and good

If you have lower than than this, it must mean your battery efficiency is reduced already



www.jekitech.com
08031138665 whatsapp or call