NewStats: 3,263,629 , 8,180,837 topics. Date: Friday, 06 June 2025 at 10:40 PM 512m13

bassdow:
Ah, except the wattage of such 12-volts battery is [very] low , na wahala you dey find be that. Even at that, there are different stages of charge and doing the above skips those hence you end up damaging the battery with time.

As for having the battery on the router for over a year, don't expect it to last that long while being used on the Fan Ooo.

I understand Chief. The battery thing was a test to see if it will even work. Fortunately I ended up getting 4hrs of runtime on speed 2. Mind you the lead acid batteries have been disconnected a long time ago.

So in all I'm just looking for 2hrs back up atmost for when electricity is off and this seems to be able to do the job quite well. I'll look into building or buying a bigger one for long term purposes.

bassdow:
This is a niche that I expect those in the battery business to fill. There are people who have not the slightest idea on how to handle common screwDriver.

Would suggest you get a (used) 100AH leadAcid battery and a small solar e.g 150-watts with a less than 8,000 naira PWM charge controller and you have a battery bank that lasts you very very well.

Mind you, that your Airtel router doesn't even consume up to 12-volts Ooo. Person like me go don give am much lower if I get em time

I just need a portable back up for the fan, 2hrs at most. I already have a hybrid inverter. To get lithium batteries soon to power the full house.

CuteMaro:

I just need a portable back up for the fan, 2hrs at most. I already have a hybrid inverter. To get lithium batteries soon to power the full house.

Have said this before and would say it again; reason a lot of those batteries don't last is due to underCharging.

Imagine from 100% , you use the fan and while running, battery drops to 80% and there is no light. Later NEPA brings light and you connect it to recharge while still using the fan hence the charger struggles to both power the fan + recharge it's battery.
Not long or long enough, NEPA takes light, but the battery has not even climbed to 81% sef. Who knows, it might have even gone lower say (79%).
Now this continues and before long, that battery must surely die.

To further complicate the matter, Lead Acid battery chemistry is slow to reCharge + those reChargeAble fans comes with really poor chargers (whether internal or external).

If you're not willing to go buy my suggestion, you could any battery builder in here e.g @Valto and tell him your requirements; it's nothing difficult to put together. Sorry me no dey too get time for such things except when building for myself.

KA24DETT:


Get Battery from VALTO. better quality with actual stated value. ( I have bought 6 pieces of 16kw batteries from him).
7kwh is enough for night use
Please buy more s. I cant emphasize the importance of adding more s. You will produce more during the day and during low light conditions like rain and cloudy weather. You can run your AC during the day and run the fan on battery power at night. Concrete and mason absorbs heat during the day and release at night so if you run your Ac during the day, you can mitigate those effects.

Thanks for your input. This is my first solar project so I intend to use a well known brand. When it's time for the next one I'll use Valto.
I haven't bought any s yet but intend to buy 8 615watt jinko s, will these be sufficient ?

17.5kwh 51.2v felicity lithium battery available
Price #3,100,000

Call or WhatsApp me on

Brand new jinko 555w available
Price #135,000

Call or WhatsApp me on 09116033581

maklelemakukula:

Thanks for your input. This is my first solar project so I intend to use a well known brand. When it's time for the next one I'll use Valto.
I haven't bought any s yet but intend to buy 8 615watt jinko s, will these be sufficient ?

Valto is well known brand .

maklelemakukula:

Thanks for your input. This is my first solar project so I intend to use a well known brand. When it's time for the next one I'll use Valto.
I haven't bought any s yet but intend to buy 8 615watt jinko s, will these be sufficient ?

Buy as much as you can afford. I go by the Mantra. " You cant have too many s". In the future, if you have money, buy more s.
Buy the 8, throw it up in the roof and see what you are harvesting. Go from there.

KA24DETT:


Buy as much as you can afford. I go by the Mantra. " You cant have too many s". In the future, if you have money, buy more s.
Buy the 8, throw it up in the roof and see what you are harvesting. Go from there.

But inverters have "maximum recommended pv power". Overloading it would be dangerous

Pls house can I convert 3phase inverter to a single phase

Hello guys please I need advise.

I have a 5kwhr/5kva LiPO4 system(Inverter/charge controller/Battery) in a unit.

I purchased 6 units of 650w Sunter Bifacial s. I posted the specs of the and my inverter system. Please what connection is best factoring in the specs of the system.

I already purchased a 6mm2 DC cable and AC/DC breaker. I want to also know if that cable size is sufficient as the recommended charge current for the system is 50A, max 100A.

I intend running a refrigerator and one 1.5HP AC

NB
========================
I intend to Add 2 more units of same s in 3 months

2pcs of 15kwh felicity lithium batteries and 8pcs of 250 European used solar s waybill to Abuja today.. to order yours call/whatsapp me on 08168986461

HeavenlyBang:
Something like this perhaps?

Unfortunately I had something like this (with the charger) that was salvaged from my son's Toy Car but I later disposed it cos I never thought I will have use for it someday

Please who has a 12v brushless dc fan for sale.. Around Agege and ogba

Take a trip to Arena Oshodi.

Gshems:
Please who has a 12v brushless dc fan for sale.. Around Agege and ogba

jonescosmos:
Take a trip to Arena Oshodi.

Thanks boss

CuteMaro:


Normally I would do this but I have like zero idea & skill on how to piece these things together. For this I'll be needing a bms to charge the batteries abi 🤔

Yes or anything to limit a set charge

Gshems:
Please who has a 12v brushless dc fan for sale.. Around Agege and ogba

Look for shops that sell basic electronic parts.

maklelemakukula:

But inverters have "maximum recommended pv power". Overloading it would be dangerous

Most smart hybrid inverters and charge controllers would ignore the rest of your solar harvest once you go above the maximum PV power they . So you'd only be wasting the PV yield not necessarily damaging anything. Though I'm against such advice unless you're very buoyant and have too much funds.

maklelemakukula:

Thanks for your input. This is my first solar project so I intend to use a well known brand. When it's time for the next one I'll use Valto.
I haven't bought any s yet but intend to buy 8 615watt jinko s, will these be sufficient ?

It's impossible to discern what's sufficient for you without stating your loads or planned daily usage. It doesn't have to be entirely accurate.

maklelemakukula:
Good morning people, I've been following this thread and it's been very useful.

I want to setup a solar system in my house, preferably with a 7-8kwh battery.
I intend getting jinko s 615 watts for this setup(please how many would I need). I also intended on getting a growatt spf 5000ES(1 mppt, 5kw) inverter but then I saw the spf 6000ES(2 mppt, 6kw) at fouani and shockingly the 6000ES was cheaper(this gave me concerns) and what gave me more doubt was that they both had a 2 year warranty while the sph 5000 tl-bl-up which is twice the price has a 5 year warranty(I suspect it's transformer based), is it advisable I get this instead as I'm concerned about long term quality.

Also, is felicity 7.2 kwh battery good to go for this project cos I wanted to get growatt but the highest stand alone growatt battery I saw at fouani was 5.5kwh and it's a bit more expensive than the 7.2 kwh felicity battery.

I also would like a system that would give priority to my load during the day and use what's left to charge the batteries. Would the growatt sph 5000 tl-bl-up inverter be able to do this ?

The image is the sph 5000 tl-bl-up

The 6000ES and 5000ES are sufficient. Just because they have 2 years warranty doesn't mean that's remotely close to their half-life or how long they'd last. There are those using theirs for 5 years plus without a single issue. It depends on your taste, funds and preference. They are all good

burnerr:

Which does the growatt hope belong to? It says lithium-ion in the title but LiFePo4 in the description.

I wouldn't completely trust that page description if I was you. Growatt has both Lithium battery technologies. Just do your due diligence before making the purchase.

AinsSama:

It's impossible to discern what's sufficient for you without stating your loads or planned daily usage. It doesn't have to be entirely accurate.

I don't intend using it for too much load.
Just 2 tv's, 2 freezers(one inverter, one regular) that I plan to power during the day, couple of fans, then maybe a 2 hp AC that has ECO mode, during the day(they wont be ON all at once).

I don't want to stress the battery at all, that's why I was asking if the inverter can prioritize load first before charging the battery

AinsSama:

The 6000ES and 5000ES are sufficient. Just because they have 2 years warranty doesn't mean that's remotely close to their half-life or how long they'd last. There are those using theirs for 5 years plus without a single issue. It depends on your taste, funds and preference. They are all good

Okay, I need one that can power 2 freezers, 2 tv's during the day, and then use the leftover power to charge the battery. Would 8 615w s be enough for this in conjuction with the above stated inverter ?

us for Industrial Vertiv/Liebert UPS---08066332919. Our offices are in Lagos & Abuja and we also do nationwide Delivery and Installation

Good morning wonderful people.

I stumbled on this thread and its been educative even though i no understand most of the big thrown around lol

So i have a small problem or should I say dilema.

My setup:
⁠Battery: Tubular 200Ah, 12V (new) -- Brand is Kartel
Inverter: 1500W, 12V (Sukam Falcon, Pure sine wave)
Solar s: 2 × 300W (600W total).

I dont know much about the charge controller but I will attach a picture to help guide whomever is answering.

Load:
Fan - 125 W
TV - 60 W
Laptop - 39W
5 LED bulb lights


I used the battery from Friday evening to Sunday early morning cos our light wasn't good (low voltage). Throughout Saturday from morning till about 5pm i was using TV and the fan whilst charging via solar. At night i used the fan alone till morning.

The battery was low (11.0v) and started charging again via solar around 8am. I plugged a phone and the fan before unplugging everything around 12pm. By 3.30 pm I plugged the fan and lights before unplugging at 5pm. I powered it on by 7pm and within 15 minutes I got a battery low notification to reduce load at 14%. TV and fan plugged. The voltage had dropped from 11.9 to 11.5v too.

I had to switch off the TV and maintained a 003% load to use 11.3v till the morning. On Monday when I got home around 6.30pm I found that it's just 12v on the controller and sure enough, after plugging the TV, it started screaming after 30 minutes.

Now my question is: is there something wrong with the setup?

I got the setup last December and I'm sure of the battery's performance with PHCN for at least 16 hours with average load. Also, my compound borders a storey building that casts a shadwo around 3.30pm so I'm sure that also counts.


Someone suggested i got an mppt controller. Help me guys. I'm fine with normal battery charge but i feel I'm not getting the best out of my solar setup.

Attached is the controller

Please quick question is there any advantage of getting more s of a smaller wattage each than getting 1 big of the same wattage.
For example 5 * 80W vs 4 * 100W . Which would generate more power if each is the same dimension.

Also, does anyone know if growatt has a standalone head office in Nigeria that isn't d to fouani ? Fouani are lacking in battery range as they seem to be jack of all trades

Darey00:
Good morning wonderful people.

I stumbled on this thread and its been educative even though i no understand most of the big thrown around lol

So i have a small problem or should I say dilema.

My setup:
⁠Battery: Tubular 200Ah, 12V (new) -- Brand is Kartel
Inverter: 1500W, 12V (Sukam Falcon, Pure sine wave)
Solar s: 2 × 300W (600W total).

I dont know much about the charge controller but I will attach a picture to help guide whomever is answering.

Load:
Fan - 125 W
TV - 60 W
Laptop - 39W
5 LED bulb lights


I used the battery from Friday evening to Sunday early morning cos our light wasn't good (low voltage). Throughout Saturday from morning till about 5pm i was using TV and the fan whilst charging via solar. At night i used the fan alone till morning.

The battery was low (11.0v) and started charging again via solar around 8am. I plugged a phone and the fan before unplugging everything around 12pm. By 3.30 pm I plugged the fan and lights before unplugging at 5pm. I powered it on by 7pm and within 15 minutes I got a battery low notification to reduce load at 14%. TV and fan plugged. The voltage had dropped from 11.9 to 11.5v too.

I had to switch off the TV and maintained a 003% load to use 11.3v till the morning. On Monday when I got home around 6.30pm I found that it's just 12v on the controller and sure enough, after plugging the TV, it started screaming after 30 minutes.

Now my question is: is there something wrong with the setup?

I got the setup last December and I'm sure of the battery's performance with PHCN for at least 16 hours with average load. Also, my compound borders a storey building that casts a shadwo around 3.30pm so I'm sure that also counts.


Someone suggested i got an mppt controller. Help me guys. I'm fine with normal battery charge but i feel I'm not getting the best out of my solar setup.

Attached is the controller

Firstly, ensure to select the appropriate battery type on the controller (just read the manual and change the settings by pressing and holding). With the right settings, if this is as good as the MIV PWM controller, you will get the same results.

Secondly, since you are using a 2400wh battery, you need at least 8 pieces of that 300Watts connected in parallel-for effective charging (if possible you make it 10 since you don’t get enough sunlight duration according to your explanation). And please get a new controller especially if your current one is below 120Amps.

PS: Please I am not a solar professional, a lot of people here are more knowledgable and can provide better solution, so I stand to be corrected.

Good luck

Darey00:
Good morning wonderful people.

I stumbled on this thread and its been educative even though i no understand most of the big thrown around lol

So i have a small problem or should I say dilema.

My setup:
⁠Battery: Tubular 200Ah, 12V (new) -- Brand is Kartel
Inverter: 1500W, 12V (Sukam Falcon, Pure sine wave)
Solar s: 2 × 300W (600W total).

I dont know much about the charge controller but I will attach a picture to help guide whomever is answering.

Load:
Fan - 125 W
TV - 60 W
Laptop - 39W
5 LED bulb lights


I used the battery from Friday evening to Sunday early morning cos our light wasn't good (low voltage). Throughout Saturday from morning till about 5pm i was using TV and the fan whilst charging via solar. At night i used the fan alone till morning.

The battery was low (11.0v) and started charging again via solar around 8am. I plugged a phone and the fan before unplugging everything around 12pm. By 3.30 pm I plugged the fan and lights before unplugging at 5pm. I powered it on by 7pm and within 15 minutes I got a battery low notification to reduce load at 14%. TV and fan plugged. The voltage had dropped from 11.9 to 11.5v too.

I had to switch off the TV and maintained a 003% load to use 11.3v till the morning. On Monday when I got home around 6.30pm I found that it's just 12v on the controller and sure enough, after plugging the TV, it started screaming after 30 minutes.

Now my question is: is there something wrong with the setup?

I got the setup last December and I'm sure of the battery's performance with PHCN for at least 16 hours with average load. Also, my compound borders a storey building that casts a shadwo around 3.30pm so I'm sure that also counts.


Someone suggested i got an mppt controller. Help me guys. I'm fine with normal battery charge but i feel I'm not getting the best out of my solar setup.

Attached is the controller

I stopped reading at the Solar rating, and looking at pictures of your controller, I didn't need to read further.

You need at least 1000w s to charge and use the battery effectively.

Also change your charge controller as the 300w are only operating like 150w or less.

Buy MPPT controller, 80A or 60A then add 2 more s

Good professionals
I have the following for sale from my old installation :
1 1kva nexus inverter
1 30a epever mppt cc
2 200w solar s
1 215w solar s
1 220ah mercury tubular battery.
Zero 706104999nine.

BigDickProblems:


Firstly, ensure to select the appropriate battery type on the controller (just read the manual and change the settings by pressing and holding). With the right settings, if this is as good as the MIV PWM controller, you will get the same results.

Secondly, since you are using a 2400wh battery, you need at least 8 pieces of that 300Watts connected in parallel-for effective charging (if possible you make it 10 since you don’t get enough sunlight duration according to your explanation). And please get a new controller especially if your current one is below 120Amps.

PS: Please I am not a solar professional, a lot of people here are more knowledgable and can provide better solution, so I stand to be corrected.

Good luck

I appreciate this. Thanks

Dam5reey1:


I stopped reading at the Solar rating, and looking at pictures of your controller, I didn't need to read further.

You need at least 1000w s to charge and use the battery effectively.

Also change your charge controller as the 300w are only operating like 150w or less.

Buy MPPT controller, 80A or 60A then add 2 more s

I was initially thinking of getting the mppt controller alone but now its obvious I need to step up the s as well.

Thanks for your input