₦airaland Forum

Xmen149:
Needs!!!

120A Felicity charge controller
Or
100A Felicity charge controller

380w or 300w 72cell Canadian solar Black frame mono.

If you have any of the above please quote this message for faster communication..

Need is urgent

Feshizzy:
I greet dem Bosses in the house,

Please i have a very delicate question,

Is is possible to get a solar and inverter only system without battery?

The function of this is to use only solar during the day and switch on nepa/grid at night without having any backup battery in place.

It's important to note that the PV should be the only one working during the day with drawing power from nepa,
And it should be automated in a way that if sun goes down or more power is required it can tap small from grid

Why I'm saying this, is so we don't need to start disconnecting nepa during the day,......

naijaboy756:
Please who has an alternative power solution that is affordable and in the FCT. It is intended to power a device with 500W capacity.

It is urgently needed and quantity can be many if confirmed to be okay. It should run for like 5 hours minimum daily

sleekender:
I have a 5KVA Solar Inverter with 4 x 200AH Eastman Tubular batteries (2.5 years old - 60% life remaining).

I want to replace the batteries to a Lithium battery.

Should I get a 5KVA or 10KVA Lithium LFP?

What is the best brands to buy (regardless of costs)

ebuks4ever:
Pls I need some help. I just bought these 2pcs of 12V 200Ah Quanta batteries. I have 6pcs of 250W installed PV.

I forgot to turn off the fridge after sunset only to notice that by 7pm, my battery was indicating 50% on the inverter. Battery volt was 23.6V.
As at 5pm, I was still getting 110Watts from the sun.

My overall load was around 250watts.

Is this normal for a battery that is just 2wks old?

gadgetplanetng:
Batteryless hybrid inverter (with a lot of panels)
Don't try it.

Once the inverter cannot get enough yield from the sun to power your load. Power would be cut off. A battery no matter as small would compensate for that shortfall which can happen several times even with the peak generation hours

ALABACONNECT:
Good evening beautiful people

Over 30 Pieces of Used America Predator Generator

4.5kva(6.5hp) @ 170k
9kva(13hp) @ 280k

Contact Alabaconnect for enquires. Contact details on siggy(WhatsApp or call)

Pofgrace:
I don't know bro but it's rated 2000va it'll definitely power 1.5hp Ac

Penuelseun:
Available

FutureFocus:
More

AndroBlaze:
Still available.

hooryo:
Good evening boss..We use to have like 10hours light average daily but one thing is once their is issue with the transformer we may go like 3days without light.

hooryo:
Good evening house..
Please I will like to have a cost estimate and solar analysis to power my room.
TV 145w
Fridge 90w
Speaker 60w
I have 4 bulb
Not sure of my fan’s watt rating..
And also my neighbors use to charge at my side.

alstacs:
Zinox Ipower is just about 280k, strangely

alstacs:
This 19 to 35% sha, sending shivers down my spine! A lot of people complain about this and the conclusion they get from experts is that there possibly was deliberate wrong labeling of the panels by vendors.
An example is a labeled 330W panel that is in actual fact 260W but they label it so to put a higher cost on it.

Bolatitodavies:
Yes my load less than 1000w, why i asked was cuz i feel my technician wants to charge high for 5kva when the money is sufficient to buy 7.5kva. Is there any 5kva hybrid that costs 500k+?

bigrovar:
A lot of variable goes into solar panels that could be the problem. One thing seem show though. You are not generating enough and your load is still too high. Both side of the equation needs attention.

On the generation side, you have a 1200w panel. But how much generation do you have on a daily. What is your peak generation and how much average daily generation. Most modern controllers have some form of logs that allows you to check their daily harvest. You might also want to check that the controller is doing in peak sun hours of around 11:20-13:00. Let us start from there before we move on.

500w is too much load for a 1200w panel. Remember that you have to generate to meet your day load and change the battery over night.
Standard installation planning requires you to account for losses (Heat, wiring and lack of optimal panel positioning losses). As a general rule, it is good practice to derate your panel by 25%. That is assume 30% of your rated panel capacity would be lost during the harvest.

Using the figure you posted 1200w * 0.75 - 900w
Multiply that figure by 3 or 4 hours (Depending on your location and the number of good solar sun hours you get in a day) Don't be tempted to use high figures because this is about planning and it is ok to be a bit conversative especially as you account for rainy months.

I would use 4 sun hours.

900 * 4 = 3,600wh or 3.6kwh. This is the average daily yield your panel should have. It can be higher on a good day and for a well installed system but just slightly.

Your battery is a 5kwh bank

Your daily usage is from your post of 500w daily and 300w night load. Your night load is already about 3600wh. You are barely able to change the over night load if you don't use the system during the day.

When you add 500w on the system during the day, you have nothing left to charge the battery.

recommended course of action. Reduce your load (the cheaper and best option)
Or increase your panels. You would need an additional 3kw panel array to meet your current usage.

Michaelondon53:
Good morning everyone. I don’t know what to say actually because i am speechless, angry and unhappy
Got these so called two (2) brand new AGM batteries in December (100ah each) 1kva psw inverter and two (2) Of fairly used 180wats solar panels connected in parallel. The batteries have NOT been giving me the value for my money... with just 1 led tv of 75wats in which i still often activated the power saving energy on the tv and also reduced the contrast and brightness of the tv to 5% which made the tv backlight so deem just in the effort to save energy. Also I have 5 led bulbs of 5 wats each with just 2 constantly on and the other 3 on at intervals and off almost immediately after usage. I also have a 12v dc standing fan which I normally turn on at lowest power speed just to save more power.

Amidst all these my strategies of minimizing power usage. What I just get from my 200ah battery in total is 5hrs on a full charge. I.e my loads include 12v dc fan at lowest speed, two 5wats bulb constantly on and the other 3 5watts bulb on at interval ( total interval bulb-on time do not exceed 45mins within the 5 hrs being supplied by the batteries. And 75 watts led tv( with energy server on and both brightness, contrast and backlight reduced plus inverter standby energy consumption which is 3% total % shown on the inverter when all this loads above are on range between 10% -12%( this is plus inverter standby every consumption inclusive).
The two batteries connected in parallel will then run for 5 hrs between hours of (8pm -1am) (which are the time I do switch on the inverter.) running from 13.1 - 12.1v or 12.0v in which I immediately switch it off so as to maintain 50% depth of discharge.

Is this normal?

Due to my curiosity, last night I disconnected one of the 100ah batteries and connected the other one just to know how long each 100ah would give. Low and behold. With that same exact load it gave me 2 hours (I.e. 10pm -1am ) battery running from ( 13.0v - 10. 9v) before the inverter came out screaming like a mad dog. The loads on the inverter read 10% (with inverter standby energy consumption inclusive)

Calculating it this should be less than 90watts of a 1kva inverter becos 1kv inverter are not properly sized they are often between 800VA and 850VA so 10 % of 850 is around 85wats to 90wats as load consumption. How come will 100ah now give me just 2hours on a full charge starting from 13.0 or 12.9

Please gurus in the house kindly help me join mouth for this matter. I swear I don tire ! You remarks-advise and troubleshooting skills would be highly appreciated. Thanks

bigrovar:
I don't think you are going about this optimally. I scanned through your message and I still did not find why you are upgrading. Why do you need a 7.5kva inverter?

You said something about planning for future expansion. If that is your only reason then it's the wrong way to plan. Solar is not about throwing money about but rather making every money you spend count. Efficiency is key in any system.

Rather than just buying the highest rated solar components you are better off first identify your load. The character of your load in term of timing and load type.

Typically the type of inductive load like water pump, freezer and non inverter AC and Fridge are things that determine size of your inverter. Plus the number of appliances you run concurrently. Once you have this figures then you size your inverter appropriately.

One thing you should note though. The load you are placing on your offgrid setup must be one you can generate back to the system either via solar or via generator / NEPA. If you take more than you can give back to the system, your setup would not last as you would over use your battery and kill it before you get economic value from it.

The first thing to consider is your generating capacity. Solar or NEPA (case in point I once lived in a place where 20 hours light a day was guaranteed that factored into my setup)

When you have your generating capacity, you then optimize your load to use below that capacity such that your battery can get daily full charge.

Next is your battery it should be able to take your night load and be at about 50% dod by morning

(Presuming you can take it back to 100% soc by noon)

Then your inverter should be sized to be able to operate at about 30% capacity when you turn your load. Over sizing inverter besides being a waste would also put a heavy idle load on your battery.

Solar has a good second hand market, if your needs radically increases you can also sell and upgrade. (Happens here all the time)

Best way to plan for the future is ensure your installation panel like where you installed your inverter or cc has enough space to do a drop in replacement for a bigger inverter without much rewiring.

Bolatitodavies:
please help us with your review before we make wrong moves.

ajabani4allah:
Pls I need suggestion on a very good 100Ah lead acid battery, it could be tubular or any other type. I would have opted for LifePo battery but I don't want to spend that much l am using it with my inverter to power just four 5watts bulbs and and a 35w DC ceiling fan

XPaul:
Office clearance sales

1.5 HP Bruhm AC @70k (bought Sept 2020, perfect condition)
2Hp Royal AC @ 90k (bought March 2020, perfect condition)

Location: Ikeja

Contact 08142393499