₦airaland Forum

omotoda:
Hello guys, I am looking at a system upgrade to higher voltage and higher capacity batteries and would be disposing off 2 units of Deriy 25.6v 2.5kw batteries used in parallel in my existing set up.Batteries were bought last year and are still in good shape.

I am open to reasonable offers.

Whatsapp- 08052002231

ADVERT NO LONGER RELEVANT .THANK YOU

Hello guys, I am looking at a system upgrade to higher voltage and higher capacity batteries and would be disposing off 2 units of Deriy 25.6v 2.5kw batteries used in parallel in my existing set up.Batteries were bought last year and are still in good shape.

I am open to reasonable offers.

Whatsapp- 08052002231

Trippledots:
I don't know if my response is still needed but will drop all the same.

I have bought a unit from them and paid before pickup. I didn't pickup myself, but rather had a regular dispatch guy on bolt do the pickup for me.

I told him what I wanted him to pickup and that he will need to snap the battery before he leaves.

It went well. And I've since installed the battery.

No complaint so far.

I like that they use a BMS with Bluetooth too.

Cheers.

What brand of BMS do they use?.Also considering buying from them but I have been skeptical.They claim they use brand new Grade A cells though

ajabani4allah:
This is charging profile at the back of the X2 series inverter. There is no setting for lithium battery, the person is planning to get lithium battery and charge with only grid. How do we go about this now?

You can set bulk,cut of and float voltage on this inverter.Any inverter that has adjustable voltage settings will work with lithium

ajabani4allah:
Can this inverter be used with lithium battery it's 5kva 24v, the owner have been using it with lead acid but want to change to lithium. I checked the back there is no lithium setting but the charging profile is;
28.6V high voltage cut off
21V low voltage cut off

The inverter has adjustable voltage settings.Thats icell inverter

bassdow:
if batteries from the likes of Valto and mrReed are good enough + cost effective, why don't we priotize and patronize them ?

Who told you people do not to patronize them?When was the last time you saw either of them post to advertise battery? Because they are busy building and meeting people's orders.

Precept:
So sorry for the late response, I had to wait till weekend to measure exactly how low the voltage sag goes because it mostly happens on weekends.

It goes as low 145v and I have estimated appliance usage to not exceed about 7.5kva to 8kva at any point in time. Maybe I should go for the 20kva to give me a bit more buffer

Yes,20kva will be your best bet if you can afford it.

Precept:
Please is there anyone with experience with this prag 15kva stabilizer? The voltage in my area flunctuates and I'm thinking of buying it to protect my appliances.

How low is your voltage and what's the total ratings of the appliances?.The truth is all these stabilisers operate at 50% capacity rating once your voltage is 160v and below.

So technically if you are within that voltage range the stabilizer is working as a 7.5kva stab ,not factoring in efficiency yet.

capnies:
LET HIM SPEAK FOR HIMSELF, MANY COMPANIES USE DIFFERENT METHODS TO LURE CUSTOMERS, DISCOUNTS, FREE CAR WASH WINDSHIELD FREE CLEANING, FREE BOTTLED WATER; THESE ARE STRATEGIES TO BEAT THE COMPETITION AND INCREASE THEIR CUSTOMER BASE.

SOME SUPERMARKETS PROVIDE FREE PLAYING GROUND AND ACCESSORIES FOR CHILDREN TO PLAY WHILE MOTHER SHOPS, THESE ARE FREE SERVICES TO ATTRACT AND KEEP CUSTOMERS.


I CAN TELL YOU THAT ANY SUPERMARKET THAT HAS A PLAY GROUND FOR KIDS, THATS WHERE FAMILIES WILL GO ALWAYS FOR SHOPPIPNG.

YOU USE YOUR INITIATIVE TO BEAT THE COMPETITION.

No vex Chairman, the truth at times is not always pleasant.I am not Valto,but at times we need to put ourselves in other's'situation.This is what he does for a living,not a hobby.You can as well acquire the skills and resources on YouTube We will wait for Valto to respond.

Tdoctor:
Dear sir Valto, what sayest thou?

The truth is if you buy cells ,it is assumed you have the hands on experience to build on your own.I am sure if I am in Valto's shoes I would not do that for free.He builds batteries packs for sale,and that is a service.

Perhaps if you need the cells balanced you can request for that service .That's the way I see it .

HeavenlyBang:
Take out one panel.

Simple
It's waste doing 2s4p.Yhen change your installer afterwards for him to even do 2s4p with such inverter

lilachiever:
Ogas in the house.

I currently use Growatt 6000 ES Plus inverter, powered by 8 pieces of Exulted 460W high voltage panels connected in 2Sx4P.

The problem is the highest the panels have given me is around 1600W for something that should be generating 3600W.

Installer is suggesting doing 7 panels parallel since we can’t connect all 8 in parallel as the voltage will be too high for the inverter to take, leading to a fault code.

I’ve not been bothered since I installed it 5 months or so ago, but now that dust is settling on the panel, panel output has even gone as low as 1000W some times.

Please advise.

Why is your installer doing 2s4p? What is this Max VOC of your Growatt inverter? What is the Voc of each panel? Your connections should be more of series.Your Growatt should be able to take the panels all in series.Or is it not an hybrid inverter? Snap the spec sheet of thx Growatt inverter so we can advise you better.

revived2:
What's the advice for this haisic 30kw battery bosses

I'm going off grid totally

How do you intend to charge this? What is your load capacity? I believe you can get better brands with full capacity

oluchibabe:
Lagos



Terminals are clean but it is the Board behind that looks scary



I opened it up and saw that the battery Juice had reached the Board and left some blue residue on it.
It is likely alkaline in nature and may have corroded some things.

Attached are HEAVILY-blown-up pictures.
Can it still be repaired and if so HOW?
Can anyone walk me through the process of what to do

Thanks

Sun dry it ,you might be lucky.I remember my prepaid meter CUI had similar issue.The battery overstayed and released chemicals into it and it stopped working. I loosened the board,sun-dried both sides of the panel and it and it is still working till now.

sofdoc1:
Good morning guys.
Any recommendations on good 10kwh batteries at 1.7 Mil and 6kva inverters at 500k?
Thanks

With that your battery budget,talk to MrReed I think his 51.2v 16kw is 1.6m.Mrreed has a 51.2v 8.8kw he advertised for 1.1m.

And for inverter,many choices are available-Growatt,Haisic,etc

Trippledots:
Why is it locked to just one voltage though...hmmm. I like the high PV input.

The thing is the price will almost buy a 5kva hybrid inverter

fuckboys:
won’t say, but it’s big.

25.6v 8kw.Enjoymebt minister

Icent99:
See price quotation i was given by an installer. Abeg when the prices reach like this abi I'm about to be jobbed

You can buy complete protection box from Dam5eey.

waleayeni1:
I have not bought it yet. But 16.8kwh is what i intend to get.

Best you get a 100 amp charge controller then

waleayeni1:
This is the spec of the inverter. I need recommendations for a good value charge control

What's the size of your battery bank?

waleayeni1:
It's a actually only solar I am interested in. Charging with grid is expensive for band A users. Please recommend a good charge controller that I can use for a pv array of 4000w. I thought that for all setups, all charge controllers connect from PV To Inverter before the battery. How would the setup be?

If you are using a separate charge controller,your connection has nothing to do with inverter.Jyst connect from PV to charge controller and film charge controller to battery.

Is your inverter 48v ? We need to know the voltage of your inverter ,type of charge controller to enable proper sizing of your panels.4000w is a lot for most conventional charged controller to handle

Trippledots:
Good evening everyone, and happy new year.

My attention was drawn by a member of this group to a mention of my name by INSPECTORMAX. I read through the comments and deliberately chose to observe the discussion before responding, to better understand the perspectives being shared and res

Sometimes maturity means responding quickly; at other times, it means listening first. So far, I have not seen anyone categorically state that Trippledots failed to deliver what was agreed, even based on the version of events presented.

Rather than go into long narratives, I will state some key facts about the installation, in no particular order:

The system was originally designed for a 15 kWh battery. I informed the client that we could instead supply a 16 kWh battery, locally assembled, at roughly the same price I would have charged for the 15 kWh option. After considering different brands, the client agreed to proceed with the full installation on the basis that he was getting a 16 kWh battery at around ₦2m.

The client requested and received a full cost breakdown of the installation (which was an upgrade to an older, failing system). With the involvement of his QS, each line item was reviewed and negotiated. After several discussions, we reached a mutually acceptable all-in price, which the client paid. Chat records are available.

At no point did the client expressly request an LVTOPSUN battery, nor did I discourage one. I simply stated that a factory-assembled 16 kWh battery would cost well above ₦2m, which informed his decision to proceed with a locally assembled option. He was involved throughout the procurement process and was sent a picture of the battery way before delivery was done. There were no objections regarding the battery’s appearance, features, or price, and to date there has been no complaint about performance.

Subsequent concerns raised about communication ports, internal breakers, switches, charging voltage, service centres, and warranty terms were not part of the original agreed requirements. At that point, it became clear that the issue was no longer about performance or specification, but about perceived profit margins.

The installation cost was initially reviewed downward by over ₦600,000, which I declined. After further negotiation, we reached a middle ground, and payment was made promptly. To be clear, the only agreed battery selection criteria were capacity and price—no other technical features were discusse or agreed upon.

As an added note, I supplied 535W bifacial Jinko panels instead of the originally designed 500W panels, and upgraded the PV cable from 10 mm to 16 mm, all at no additional cost to the client. These decisions were made to improve system quality, even though they reduced my margin.

In conclusion, I have consistently maintained—both privately and publicly—that what was agreed is what was delivered. The final procurement cost of individual components is not the client’s concern once specifications, scope, and price have been negotiated, reviewed, and accepted.

To the client’s credit, he did request a refund for the balance of unused PV cable. While I declined a cash refund, I offered to return the remaining cable, despite having supplied a higher-grade cable at a higher cost than originally specified. He motioned that I could retain the remainder, and I appreciate that.

I have tried to be as concise as possible while providing clarity and clearer context to his narrative.

Cheers.

Well,I would suggest that as businessmen,consultants or installers,let's imbibe the culture of full disclosure.Saying the client did not talk about communication,etc is not fair.Ideally,you as the installer is the one that should have put all these cards on the table.Some one is investing in a 16kw battery and you are saying he didn't ask for communication ports,etc.Haba!

How many 16kw batteries do you have that doesn't support communication?16kw batteries are top end capacity batteries and comes with full package so ,I humbly fault you there.

Your client feels cheated and rightly so.Apologise,see how you can come to a win win situation and let's move on.

This life no too hard like that

INSPECTORMAX:
Battery Procurement Dispute – Request for Fair Resolution

I’m sharing this to seek objective input and a fair resolution regarding a recent solar installation carried out by Trippledots.

From the outset, my clear preference was LVTOPSUN, based on its features, reviews I got here on NL and other platforms, warranty, and support structure. To confirm pricing, I independently contacted Solaris Surge, who quoted ₦1.9m. I communicated this to Tripplredot and stated I was willing to pay ₦2m to cover procurement and logistics.

At no point did I request a locally made battery. The decision to move away from LVTOPSUN was based on Trippledots recommendation, where I was advised that LVTOPSUN would not provide a full 15kWh usable capacity, while a locally made alternative would provide a full 15kWh and comparable overall value. Based on this professional recommendation, I agreed to the change.

Before payment, I had also informed my Quantity Surveyor (QS) that I was proceeding with LVTOPSUN at ₦2m, which he confirmed was fair. The locally made option was not discussed with my QS at that time. It was only after the battery was delivered that I shared the details with my QS, who highlighted material differences in value, pricing, and functionality compared to LVTOPSUN.

Following further independent research, I confirmed that the installed locally made battery (Mr Reed) is commonly sold around ₦1.6m and has more limited functionality compared to higher-tier options. I also found that alternatives such as VALTO, sold around ₦2m, offer better communication features and overall functionality at a similar price point.

After installation, additional differences became apparent, including shorter warranty coverage, lack of a Lagos service centre, and missing communication features, some of which required additional cost and I was charged separately for and are still not functioning at the time of writing.

I attempted to resolve this privately by requesting either a reasonable price adjustment or a return to my original LVTOPSUN preference. After reasonable follow-up, I have not received a response.

I’m open to constructive opinions on what would be considered a fair and professional resolution in this situation, particularly where a client’s original product preference was changed based on professional recommendation without full disclosure of material differences.

Image 1 : Locally made battery that was supplied and installed

Image 2 : LVTOPSUN battery that was my original request

While I totally understand your grievance,I would suggest you just forget it,count your losses and move on.

It can be painful paying #2m for an item you can easily procure yourself for #1.6m and still not get the required features

The good thing is that you have a good battery.Mr Reed is an honest man and his batteries are built with Grade A cells.

Next time,take time to do proper research and ask questions here.Most folks here will easily point you towards the right direction.

Take it as part of the learning process and move on.

fuckboys:
well he still got a great battery with grade a cells . Mr Reed is a great guy. The only problem i see here is communication with his inverter which can easily be sorted out.

Yes,he got a good battery as Mr Reed is tested and trusted.I think the issue is the fact that he paid 2m for a battery that was procured for #1.6m which I believe he should just forget and move on.He paid for his ignorance and should learn from that.

justcallmenuel:
42pcs of 130AH Sunfit solar battery supplied to iyana ipaja, Lagos state.. keep sending your orders

You mean people still buy deep cycle batteries? These batteries showed me shege those days!

fuckboys:
yes, a 1hp inverter ac

Best option for now.Thats how I came up with a separate 5kva for my fridge,freezer,microwave,blender,toaster and any other power equipment.Runs it on a 2.5kw 48v battery and 2100watts panel.Looking at increasing the battery for longer run time in the immediate future

kuss:
Please ooo
Does anyone have experience about installing solar panels in Gowon estate
The roof is flat abestos roof

My panels were installed on fibre ( asbestos) roofing sheet as well.

dollarnaira:
"Energy need" and "upgrades" are relative. There is battery upgrade, inverter upgrade and pv upgrade of the same voltage.

Sometimes ago I was in great need of electric iron, I won't bc of it upgrade my voltage system bc it is never cheap like most of put it. I only got a 300w iron which am very satisfied with. Note too that technology is advancing and with time all energy guzzling appliances will run at incredibly low wattage. The competition is already in place.

I beg I dey find 500 to 800w electric jug. Naija is not smiling.


A 12v 4.2kwh system is roughly 1.4m

Bros as far as me concern sef,using iron and even AC with solar na luxury.Maybe because I am on band B and still enjoy minimum of 18hours electricity supply daily.

GloryJoyeux:
I just don't like when people throw up random info as fact.

You are wrong that vast majority of families (plural), will be okay with that setup.

That your set up in the north can generate max of 5kwh daily, and in the south just average of 2kwh daily. So what do you mean by families (husband wife and kid/kids) will be satisfied with that set up.

Now for facts, the average home consumes 10kwh daily and the figure has been climbing for years as global warming increases the climate temperature.

I think the issue is that you should stop trying to portray solar as cheap, don't have the mindset that there is a budget for everyone no matter how little.

Solar is expensive and rightly so, because most people will even underestimate their consumption from the get go, so you even need to over size from the get go.

Have you seen a woman's energy consumption? Or that of kid's? As a guy, or spinster you can install something as bare as ur energy needs need, but you see your wife/partner and kids, they will never listen and turn on as much as they need each time they need it, just like they are on nepa.

So don't give false facts or false sense of solar is cheap.

True.My madam does not care whether we are on NEPA or solar,microwave on straight and you will hear freezer and fridge can't be off.I had to do a separate 5kva for fridge, freezer and microwave so my other house power needs do not suffer.However,all still co ones down to economic power.If one can invest in higher capacity at the on go,it's the best.Set up takes less space and is neater

GloryJoyeux:
Hi,

The sad part about solar people hardly talk about and for the one's that talk about it, people hardly listen.

It is a known fact, that energy consumption increases after solar installation. A simple online search will show many articles on this fact.

This is why it is recommended to, as a bare minimum start with 24v but if its possible just go 48v all out at once.

Solar is more expensive if you start on 12v or 24v and your energy demand increases so much that you may need 48v for efficiency. And then, if total load requires 36kw peak and above, then a higher voltage is even better. That's why most inverters above 20kw are HV inputs.

Solar can be cheap, if you get it right the first time. It can also be costly and take up more space per kwh if you undersized from the get go.

Cheers

You are right with this as most people eventually upgrade from 12v to 48v eventually as power demands definitely increase over time and it is cheaper to have gone with much higher capacity at the initial stage.However,we must understand that fingers are not equal and economy is not smiling

Pbaelish:
Hello to everyone.pls is it possible and ok to use a 48v lithium battery with a 24v inverter,a friend said his installer said its ok. he was using 24v 400ah tubular before and just got 48v 5kwh lithium so i thought he will need to change inverter but he said the installers said no need. Appreciate your answers for clarification.

Perhaps your friend didn't get what the installer was saying but if indeed that is what ehe truly said,he should run from that installer

fuckboys:
Please I want to know if there’s anyone here who can harvest the cells from my Haisic 12v 3.6kwh battery and add more batteries for a 280ah 24v configuration using his own box, then tell me how much to pay for it?

Not sure many of the builders here will want to try this out for the following reasons;

1.They would be pairing brand new cells with Haisic cells that no one is sure of the quality.They won't want to take that gamble as you will definitely keep going back to them bv the time the cell imbalance wahala starts in future

2 The cost they will charge might not make much difference from the cost of a new 24v 7.2kw as the difference technically will be the cost of the 4 Haisic cells,which are not Grade A cells for that your particular battery model.

3.You will be better off using your system.like that , go the DIY route or sell off the Haisic for fair price and buy your needed 24v capacity