Drgreatone:

Must inverters nko?

Tbb inverters are also very rugged and are Low frequency, though they are a bit pricey but have excellent customer support with after sales service

Drgreatone:

Oh ok. Any reason u chabged to must? Does it have a higher VOC for 12v than the powmr

My old powmr has a bug that sometimes changes the controller to pwm mode when the battery gets full and load is applied, I will have to switch the solar input off and on a few times before it returns to mppt mode, note that this only happens on 12v batteries, never happens on 24v systems

eghos12:

I which we can see inverter that goes below 10v above 70% would still be okay

victron satchet inverter can go as low as 9v but very expensive

Drgreatone:

Do u still use the same 60a Powmr SCC? If yes, ow do u overcome the voc of 80 for 12v seeing as ur set up surpasses it if connected in series?

Nope, I now use a 60a Must cc, panels are connected in series

eghos12:


You know you are buying mppt charge controller sha because of this size of panel ba

he can divide the cells into 2 and use with the pwm controller if he knows his way around it, voltage will be reduced from 36v to 18v thereby doubling the current

Buchika:
Please experts in the house help me fine tune this setup.
Can these listed solar items power my load without stress.
The freezer and TV will be on only between 9 am to 5 pm.
The 3 fans will be on all night.
The 6 LED bulbs will be on up to about 10 pm

Load :
140 watts hisense chest freezer
50 watts hisense TV
10 watts Gotv decoder
6 pcs 5watts bulb
3 pcs 30 watts AC/DC fan
3 phone charging point

The setup:

2.5 kW inverter
60a mppt cc
1400 watts solar panel
12 v 210ah lifep04 battery

1400w solar panels on a 60a charge controller at 12v is a waste as the controller will only be able to take about 800w from the panels thereby discarding the rest, your best bet is to go for 24v system and opt for 120a 24v lifepo4 battery

leTrizzle:

How long do you run the fridge?

8am to 6pm daily except in periods of bad weather, changed my panels to 2 435w jinko solar panels and so far their performance has been exceptional

Wizyoung:
The bosses in the house... I greet you all.

How can one tell that an inverter is Pure sine wave and not modified sine wave at first use?

It has come to my notice that many modified sine wave inverters are advertised as Pure just so they can be sold at a higher price.

You will hear a humming sound when used with ac ceiling or standing fan

officialfestus:
share link please, I can't find it on jumia.

it is there, search for 60a charge controller

officialfestus:
good evening boss, is it compulsory to ground (earth) solar panels?

Personally I don't think it is unless the building is a storey building without a thunder arrestor installed. Ac and DC SPDs are a must sha

swagifted:
of course the motor necessary for that is going to be needing some sort of power.

no motor needed for that, just a small mechanical mechanism

odimbannamdi:


Regarding your first sentence, do you refer to VoC?

he is correct, some controllers have different voc for different voltage rating. Mine for example has a VOC of 100v for 12v battery and 150v for 24v and 48v battery

Obnoxious2001:
So recently I have been thinking, how do you charge your 3s battery with solar controller?

Due to the fact that most pwm controller has max bulk charge at 14.4v.

Don't you think running 4s is a more better option

the controller I posted up there has both 3s and 4s lithium profile, 4s configuration is not good for most 12v inverters in the market as the maximum voltage they can work with is 15.5v, 3s will also limit you to around 50% of your battery capacity as most inverters shut down around 10.5v. 7s and 14s is the best configuration for li-ion cells

adibo:


Good morning, thanks for your response to my question on my fridge, a repairer fixed it yesterday.

Is there any ceiling fan that consumes very low power? Like 10 to 20w?

yeah, qasa DC ceiling fan

sentix:
Hi house
How can I connect a solar panel to my 4s battery pack

Yes you can, the first controller in the picture supports it

RickyM:
Good evening to great Nairalanders🫡🫡🫡
Please I need y’all opinion on this‼️‼️
Does any of these PWM charge controller good for charging LiFePO4 battery?
Or any other suggestions but not MPPT abeg because man no guide 😂😂😂

the middle one has lithium profile, does it's job well too

Obnoxious2001:
Welcome to April.
2nd April 2024
190w solar panels x 2 installed on a 2 storey building, although the client claimed it was 300w (that's not my business anyway)

I didn't bother to take a picture at all. The height no be my mate😢😢.

I was just fixated on installing the solar panels and coming down.

My method of entrance was with ladder 🪜 I got help from (zino) a guy around the vicinity. The guy was like how you get mind use ladder dey climb this roof .....
Ah I no fit do this work walai.

To the controller and battery area, I found out the battery had drained to 4v and the client claimed it was a new battery.

I fixed the problem by simply connecting the PV directly to the battery so the voltage can increase, then I followed it up with charging with the inverter since there was nepa available

I delivered the job and left the site, after a day we discovered the inverter has some fault with its push switch which I service with brake oil and it was solved.

Hopefully I will bring you more epistle

following

sow4me:



Battety under voltage means what pls?

battery voltage getting too low

Wizyoung:


Boss, please I need your help recommending where to outsource these quality cells. Where do you buy yours in Nigeria?

I got mine from tetralogy here on nairaland, seems like he is out of stock for now

sow4me:
Hello good evening guys,

Been having this issue with my inverter a while now.

I got this system some months back but iv been having with the charging

I have a 220 ah battery,
A 350 watts x2
A 60amps pwm charge control, and i make use of a UPS instead of an inverter system.

Now the issue is my battery gets full on time, doesn't go upto 12.8 volts when full as it remains on 12 or less than; also the pwm charge control lately gives me a E - 03 error code on the screen almost all the time

I need experts to chip in one or two ideas pls so i know what to do next 🙏

Your battery gets to what voltage when full? The pwm controller cannot serve you well on a 350w × 2 setup, you need an mppt controller

Obnoxious2001:


Boss come and teach me work.
Do I pm you

You na senior man na

Teejayadex:
I need a setup with 12v 200Ah batteries. How many cells will I need, and what other items will I need to acquire? I would appreciate it if someone could guide me through this process.

wouldn't advise that you play with li-ion cells unless you know what you are doing, it is also a labour intensive task to couple 300+ cells. This was the one I built about 3 years ago, 3s 250ah and 7s 120ah

adibo:


OK, my battery is a tubular battery, the installer left the low battery disconnect at 20v, I will change it immediately. Thanks

I checked the battery case, nothing is written on it

20v is 10v per battery which will damage your battery in no time

ayinba1:
Hello everyone,

I had an installer complete a 2.5KVA solar at my home. However, a piece of the battery cap broke and has been crusting leading to at least 1 episode of power outage. I fear that this would recur and of course, the installer is MIA, lots of excuses and stories. I am trying to fix this and a picture is attached, kindly advise.

Where can I buy the cap and is it a DIY replacement or do I have a bigger challenge? I think a battery repairer can remold the terminal for you, I mean those guys that recharge car batteries

Installation is less than 6 months old by the way. That's one heck of an installer for you.

I think battery repairers can mold another terminal for it

adibo:


Thanks for your response. My Low voltage discharge is currently at 20v for a 24v system. Is that too low? If yes, what is an appropriate level?

Also, my float charge is at 27v, I saw somewhere they said it should be 27.6v, what should I set it as?

low battery disconnect should be at 24v for your battery type, 23.6v should be the minimum you should get to and it should not be always, 27.6v is okay as your float voltage although that should be written on your battery case

efec:


Selling

Location?

adibo:
Good evening all. Under utility charging mode of my inverter, it shows AC maximum charging current of 60A. Should I leave it at 60A or reduce it to 20A (dats what I saw online) while the maximum solar charging current is showing 80A, should I set this to 80A as well? I am using two 220ah tubular batteries

Reduce the utility charging mode to 20a or 25a, leave the solar charging current as it is as that will be determined by the number of solar panels you connected to it

madaleeda:
See the battery

You will have to disassemble the cells and rebuild it to use with a 24v system. The current battery configuration is 6s while you need a 8s system to work with 24v

Oraimo sold, JBL remaining

Penuelseun:
Who has any good iptv plug here, need one asap

Anyone?

madaleeda:
Good evening house, to all the DIY gurus I duff cap for una, pls assist a very humble novice, I got 8 pieces of 19.2v lithium battery packs with 249.3wh capacity, can I use it to build a combined 24v battery system?

theoretically you can, what is the configuration of the cells and pictures would be great

officialfestus:
Good morning gurus, ewizard1 dollarnaira and others.
Please I have a question in regards to this DIY lithium battery, I watched a video on YouTube whereby a 12v 60ah 3s BMW was used for a 1kw battery size.
My question now is, I thought battery sizes determines the required bms for it, e.g a 100ah battery requires a 100AH bms?

Battery size does not determine bms capacity, charge and discharge current determines it