₦airaland Forum

sensisosu:
So how do I rectify this problem.. By the way my charge rate today was averagely 10.09A which is considered normal, I was wondering shouldn't it be more than that since I am using an mppt charge controller which should charge faster than the pwm charge controllers

Sometimes I just tink mppt is overated. Jst sayin

bigrovar:
400w * 12 = 4,800 / 0.90 (inverter efficiency) = 5,333w
Lets assume your are running this on a 12v system

5,333/12 = 444ah

so in a day your take 444ah from your battery bank.

In other to maintain a 50% depth of discharge (which would ensure your batteries are at between 500 circles (1.5 years) up to 1800 circles ( about 5 years) depending on type of battery use use.

Hence a battery bank of 800ah = 4 12v 200ah batteries (In parallel) would put u within a safe zone of 56% dod.

You will also be operating below the discharge rate of a C20 battery since your the battery discharge rate would be close to 37ah / hour.
Number of batteries required is 4 12v 200ah batteries (for a 12v system)

Regarding charge controller. and number of PV. The important rule is. You most be able to generate what you use with some room for raining days.

your daily watt use is 5,333w

PV= your daily use is 5333w (lets says 5400w)

It is good to factor in PV efficiencies and heat related losses into the system hence I would recommend you get 6 250watt panels in series parallel connection

this would give u a total of 1500w / 12 = 125ah * 0.77 (rule of thumb for the combined real world panel plus controller efficiency loss) = 96ah

96 * 5 (average number of sun hours in Nigeria ) = 480ah (sometimes u get more, sometimes a bit less) either way that is above 444ah daily requirement so you have 480w for redundancy.

number of PV = 250w * 6 (this would guarantee your give back what you take from the system)

Charge controller which u need to get this would be a 100a mppt controller.

As you can see from the above. the system u have here would be quite expensive to put together. The first thing you do when planning for alternative energy is to trim down your system to make it more efficient. With some adjustments, that 400w concurrent usage for 12 hours can be reduced. Also how did you come about the figure? did you use a watt meter?

I am still a padawan when it comes to this whole solar thingie. I am sure some Jedi masters in the house would chip in to add to the conversation.

Bro datz y I said near 12hrs, anoda tin to consider is he powering jst 400watt of load, by d time u bombard all dis figure to power jst 400watt. e get as e b o

1) I said 4 is OK, nd i agree if u say 6 panels dat means faster charging.
100amps charge controller is nt necessary, using a 12v inverter system, u r paralleling too much ( 4 batteries) and dat is y u re suggestin 100amps
2) you can't use 250watt panel wit a 12v inverter system because 250watt comes with 24v by default. Using a 24v inverter is perfect.
3) 4 batteries is on d high side, who ll fund all this tin you are sayin because of 400watt of load. Afterall there is solar to bk it up

princejones:
The laying of the roofing sheets will start tomorrow

Beautiful work, keep it up sir

mank1234:
Hello gurus in the house, please help with answers to the following questions:

1) how many 12V 200AH deep cycle battery is required to power an AC(220V) load of 400W continuously for 12hours, assume efficiency of inverter to be 90%?

2) how many 255W solar panel is required for the setup in 1) above assuming MPPT charge controller is to be used?

3) what should be the current rating of the MPPT charge controller be?

1) 2 12v200ah batteries ll giv u near 12hrs, use a 24v inverter alongside it
2) four is ok
3) 60amps is gud, so incase u increase panel in future, u dnt v to wori abt charge controller

kennethbetha:
I have tried 3 different inverters and iy is still giving me the same fault.i have even changed one of the batteries yet no improvement. It charges for 5mins and the charging indicator just goes off and when I try using it it goes off b4 10mins.

Proper connection needs to be redone, assuming inverter and batteries are not faulty

domwas2:
My inverter batteries no more coming on what do I do
After I used it then charged but no more picking

Hw long v u used it. If long enuf, just change ur batteries

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kennethbetha:
I just got a 1.5kva 24v inverter but it isnt charging my 2 pcs 200a 12v batteries. The batteries are from different companies but of thesame size could this be the issue. I tried connecting the batteries individually and they were charging . anyone with idea on what d issue could be shld pls assist

Try getting an external charger, ur inverter charging circuitry might b faulty

onitaja:
Hello group. I am thinking of getting a must power 2 kva inverter. I am being offered 2V 1000 ah battries. What is the advantage of the 2v battery as opposed tp the 12v 200 ah. Thanks

Advantage is that, you will have longer bkup time using 2v/1000ah batteries than using 12'/200Ah batteries. Disadvantage is it ll cost more, you will need and external charger to charge your batteries faster.
But if u v d funds and can get external charger, then there is no Disadvantage at all.

I have 48v/50amps Huawei external battery charger for sale though.
Enjoy ur setup... Cheers

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JUO:
good advice but he will spend more on cable

No, how much will he spend on cables, i don't see that as a problem.

netotse:
thanks for this man...

Yes I am aware of the limitations, but I thought it was 1500W.

Asides from cable costs, I assume the thicker cable is more expensive, what would the advantage be to use 2 strings of 3 panels each?
Can you explain why 3 strings of two panels may be better for the CC? no vex say I dey ask you jamb questions.


how to decide on the way to connect the panels to the Charge controller, MPPT, 60A, inverter is 24V.

I bliv u r buying a 24v panel,since ur inverter is 24v,jst parallel dem so ur voltage remains same and ur current increases and mk sure it doesn't exceed what ur charge controller can tk.

netotse:
Oga I'm looking for Advice na...help a brother, all this call XXXXX is long thing jo

Wch advice bro, let's see hw we can help

netotse:
Hi Guys,

I'm planning to add solar panels to my inverter backup this week(Tuesday or Wednesday), I need some advise:

I plan to use the 60A Epsolar charge controller, at the moment it looks like I will get 1200 or 1500Kw,(I will decide tomorrow), but it's 24V panels I will be getting for sure.
I need help in deciding how to string the panels optimally, will 3 strings of 48V be better than 2 strings of 72V?
is any of them better than the other? esp since it's an MPPT charge controller I will be using?

Call us for installation at affordable rate, mk sure you size your charge controller very well, stringing ll depend on your inverter voltage. Call 08117398294 or email Info@monzpowersolutions.com

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debawilliam1:
am sorry but you may have to resend the email as i have not received it. pls are batteries included in your setup? my email address is debawilliam@yahoo.com. thank you

Batteries are included in the setup, i have resent the email. Thnks

fixedhollies:
Does d inverter include battery and charger? Forward me d price and picture of 1kva to freezetrue@gmail.com

Price is 130k

debawilliam1:
Please send your pricelist to debawilliam@yahoo.com. i have 2 40" tv, decoder, 1 deep freezer, 7 bulbs, 1 hp A/C, 3 ceiling fans

All loads including freezer n ac - 5kva setup
All loads with freezer only-3.5kva setup
All loads excluding ac and freezer - 2kva setup.

You choose either setup dat suits ur energy need n pocket, price list for each setup v been posted. Thnks

Our price list
1kva/12v + 1 battery(200ah) + installation = N130,000 1.5/2kva/24v +2 batteries(200ah each) + battery rack + installation = N220,000 2kva/24v + 2 batteries(200ah each) + battery rack + installation = N230,000 3.5kva/48v + batteries(200ah each) + battery rack + installation = N450,000 5kva/96v + batteries(200ah each) + battery rack + installation = N950,000

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lanrei:
What can a 1kva/12v solar power work with.. Pls explain..

Sorry sir I don't understand ur question. Pls rephrase

codemaster2much:
Hi I want to buy am inverter but would like to know if there is any significant impact of charging inverter on Nepa Bill.

I meant if you compare the bill you pay to Nepa before and after you bought the inverter

Yes dere is if u r on prepaid meter. If u want to cut dat expenses out, you use only solar and gen to charge ur batteries

raphemmanuel:
Oga poster why don't you list the items you are advertising with features and prices here, than sending it privately to different emails.
Or is the business a secret business?
so if its a secret business why are you advertising your products.
Advert is meant to inform the public and not to certain people.

Pls go thru previous messages b4 u start complaining or accusing, u shud see dat price list v been posted, everyone's setup can b diff according to their load, dey require customised setup, wch can b sent to their mail. I dnt tink dat shud b a problem, recently I installed a 2kva inverter for someone wit 4 batteries instead of two, because his load and d backup time requires it. Dere is notin wrong in sending info to email.. Our price list is on this thread and on our website. Thnk u

temizeee:
nice innovation... I think Nigerians are just waking up from slumber.....#solarthegreenway

Thnks

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skyfall:
Hi engineers in the house. Can this generator charge a 2.5KVA inverter and power other things in the house (including a medium-sized fridge) at the same time? Tnx

cc Zeestone99

It ll charge it, but nt sure if it ll go wit d fridge, it can go alongside oda small load.

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