₦airaland Forum

Gshems:
I have a 12v 100ah joykoo lifepo4 for sale. Used for 1 month

How much?

bassdow:
isn't it funny when you guys support certain things, then turn around and make comments such as above.

ReCall it was one of your comments or so that I said something that was immediately spoken against. Me kukuma just keep mute. If una like, make una run 3.2v system come use inverter boost am to 240v e no concern me.

We need understand when we share certain unCommon information which doesn't apply to , chances of it being abused exists. Certain information ought to be used by professionals on sight based on project requirements.

I think his suggestion is very sound and maybe the most effective.

Could you perhaps shed more light as to the reason for your counter opinion?

bassdow:
you really don't need the 2 charge cotnorllers, the 60amps is more than enough for both batteries. If you must use a changeOver, then let it to switch the batteries, not controllers

off course, the change-over is for the batteries.

What do you suggest, he can he can only use 800w panel. And 800w cannot charge 400a batteries full with Lagos weather. Thats why I m suggesting using the second controller with another panel splitting the batteries.

For context, I m not a professional installer but DIY person that love experimenting. So if someone gives me 12v inverter system, 400a batteries and 2 mppt cc, I wont complain its not 24v system, I will find a way to make it work.

I separated them before but I was not getting it. I have 4 200w panels that is turning in 20ah at peak period and 2s2p panels that is generating 9ah at peak period.

HawkTuahGirl:
off course, the change-over is for the batteries.

What do you suggest, he can he can only use 800w panel. And 800w cannot charge 400a batteries full with Lagos weather. Thats why I m suggesting using the second controller with another panel splitting the batteries.

For context, I m not a professional installer but DIY person that love experimenting. So if someone gives me 12v inverter system, 400a batteries and 2 mppt cc, I wont complain its not 24v system, I will find a way to make it work.

bassdow:
A lot of times, especially in your situation, your charge controller dictates the limits which is often about maximum of 800w for solar panel. Anything more than that, at same voltage, your charge cotnroller either clips off the excesses (in form of heat) or experiences stress that either shortens it's usable life or causes immediate damage.

so what is the way out? I want to be off grid.

That was my initial thought but the one at night could not serve me long at night.

HawkTuahGirl:
You are right.

From a user point of view, I will charge the batteries separately, connect one to Jinko 715W panel - 60a mppt and the second to Jinko 520W panel - 40a mppt.

I will use a charge over to use 1 battery (with 60a) during the day and another (with 40a) during the night.

Brand new Grade A EVE 178ah lifepo4 lithium battery cells available at discounted prices

---

Brand new Eve 125ah, 141ah cells available

---

brand new REPT ,Gotion,Cornex 314ah lifepo4 lithium battery cells available

---

brand new gotion 15ah,20ah,23ah,50ah,100ah cells available

HeavenlyBang:
There are perfectly fine 12v systems that would meet the demands of most people.

That has nothing to do with the fact this his system in particular was poorly designed, I'm not sure I get your point really. Obviously when you're getting into higher wattages, it makes no sense to use 12v.

Both points aren't mutually exclusive.

e get capacity / load wey you go reach, 12v or even 24v becomes less suitable. Mind you, He could still comfortably use his 12v system for all those loads with almost no issue

Deluxe8000:
I separated them before but I was not getting it. I have 4 200w panels that is turning in 20ah at peak period and 2s2p panels that is generating 9ah at peak period.

if I were you, I would first sell off those 200w solar panels. A lot of them are barely up to 150w to begin with.

Whatever you do, the minimum solar panel ought be 300w. Those 200w and below are mostly for those using portable Solar systems because it gives them a cheap shortcut to proper charging system, almost not requiring a charge controller

Deluxe8000:
I separated them before but I was not getting it. I have 4 200w panels that is turning in 20ah at peak period and 2s2p panels that is generating 9ah at peak period.

see eh, I'm kinda confused. Are you same person as @HawkTuahGirl ?
Reason being that I have seen the load of @HawkTuahGirl . Make person know wetin e dey talk

HawkTuahGirl:
off course, the change-over is for the batteries.

What do you suggest, he can he can only use 800w panel. And 800w cannot charge 400a batteries full with Lagos weather. Thats why I m suggesting using the second controller with another panel splitting the batteries.

For context, I m not a professional installer but DIY person that love experimenting. So if someone gives me 12v inverter system, 400a batteries and 2 mppt cc, I wont complain its not 24v system, I will find a way to make it work.

I recall being the one saying the limit should be 800w but either way, is the 800w a single panel or a combination of solar panels ?

An average quality MPPT charge controller + good solar panels of 800w in good mount location should be able to properly recharge your batteries especially since they even are lithium batteries.

Another issue is the current coming from that 800w solar panel. 3pcs of 300w or 2pcs of 400w or even 2pcs of 350w solar panels should do a good work

if those solar panels are individually 200w, then that's your number 1 problem. And if your charge controller is PWM, or glorified MPPT, that's another problem and until you fix those, you wasting your time especially since you even on 12v system.

Deluxe8000:
so what is the way out? I want to be off grid.

either go with the suggestion by @HeavenlyBang or ...

what's spec of your current Solar panels ?

Unfaized:
I think his suggestion is very sound and maybe the most effective.

Could you perhaps shed more light as to the reason for your counter opinion?

funny enough, I didn't counter his opinion; just made a comment. na some useful suggestions made in here that some people try to use wrongly. They need understand certain suggestions fits certain contexts/situations

bassdow:
see eh, I'm kinda confused. Are you same person as @HawkTuahGirl ?
Reason being that I have seen the load of @HawkTuahGirl . Make person know wetin e dey talk

I am not o.

bassdow:
either go with the suggestion by @HeavenlyBang or ...

what's spec of your current Solar panels ?

africell

please how much each be 50ah(4 of it), bussbars and bms that should be used with the cells?

Valto:
Brand new Grade A EVE 178ah lifepo4 lithium battery cells available at discounted prices

---

Brand new Eve 125ah cells available[brand new REPT ,Gotion,Cornex 314ah lifepo4 lithium battery cells available

---

brand gotion 15ah ,20ah,23ah,50ah,100ah cells available

Deluxe8000:
africell

didn't ask of brand name; those mostly are useless information to me.
I asked for spec of the solar panels e.g their wattage such as 200w , or 150w or 300w or 800w or

fuckboys:
hmmm, charging this huge battery on 12v? That's a lot of heat o.

Best is series those batteries and run a 24v system.

4pcs of 450w panels is okay.

4 pieces of 450w panels will carry the load and charge the batteries fully.
Can 60ah mppt cc handle them?
How much can one get the 450w panel?

Deluxe8000:
4 pieces of 450w panels will carry the load and charge the batteries fully.
Can 60ah mppt cc handle them?
How much can one get the 450w panel?

A typical 60A charge controller on 24v can handle a maximum of 1,600w though if a bit higher is safe but not adviceAble

so 4pcs of 450w in series => 450w * 4 = 1,800w which shouldn't be much an issue BUT would advice you do 2S2P to avoid over heating or stressing the charge controller unnecessarily.

in other words, YES your 60A MPPT charge controller can comfortably handle the 4pcs of 450w solar panels connected in 2S2P.

Also if you looking to buy solar panels, then no need going for 450w,

you could just go for 2pcs of 500w which is well within capacity of your 60A charge controller

OR

4pcs of 450w in 2S2P config

OR

4pcs of 400w in 2S2P config

OR

just go big with 2pcs of 600w solar panel in 2S config.

As for price of solar panel, you need mention what part of Nigeria you reside in + your max budget so we know if it's New or Used your pocket can afford

Location Shomolu onipan area of lagos
What matters most is the one that will carry the load and charge the batteries fully daily at the same time as an off grid set up.
I need to know to prepare myself for next year.

Deluxe8000:
Location Shomolu onipan area of lagos
What matters most is the one that will carry the load and charge the batteries fully daily at the same time as an off grid set up.
I need to know to prepare myself for next year.

Either of

4pcs of 450w solar panel in 2S2P config

OR

4pcs of 400w solar panel in 2S2P config

OR

2pcs of 600w solar panel in 2S config

should do. Let me allow Fouani people drop prices or just waka enter Arena or Ojo market or whatever BUT be mindful of Ojoro solar panels whether New or Used

Deluxe8000:
4 pieces of 450w panels will carry the load and charge the batteries fully.
Can 60ah mppt cc handle them?
How much can one get the 450w panel?

you’re limiting yourself if you use a 60a cc cos it’s 720w on 12v peaks. You need a high pv voltage hybrid inverter or a 100a mppt cc

Valto:
Brand new Grade A EVE 178ah lifepo4 lithium battery cells available at discounted prices

---

Brand new Eve 125ah cells available[brand new REPT ,Gotion,Cornex 314ah lifepo4 lithium battery cells available

---

brand gotion 15ah ,20ah,23ah,50ah,100ah cells available

How much is the Eve 178Ah and Cornex 314Ah?

200w

bassdow:
didn't ask of brand name; those mostly are useless information to me.
I asked for spec of the solar panels e.g their wattage such as 200w , or 150w or 300w or 800w or

Deluxe8000:
200w

so you see, I don talk am already that if your solar panels is composed of 200w solar panels, that should be first issue you need tackle. See https://www.nairaland.com/390522/solar-energy-complement-fta/2223#137961973

You first need dispose them off else even if it appears to work, na your battery go suffer later.

BUT if money no dey for now, and you got an average quality MPPT charge controller, then do 4s config

Dear Techees and DIYers,

I did like to say Happy New year to those who may have crossed over and Happy New Year in advance to those counting down...

Just today, I thought it required to isolate my system in bits for checks, tightening and dust blowing off starting with my Charge Controller with pictures attached.

However, I found something worthy of monitoring. The Battery negative line appears to be burning gradually from the inside. Gradually I mean after about 3years. I may have to monitor this over time and consider changing...

This is just to share and remind us to prepare our systems for yet another year for optimization and or any words/contribution

Fakeisfake:
Dear Techees and DIYers,

I did like to say Happy New year to those who may have crossed over and Happy New Year in advance to those counting down...

Just today, I thought it required to isolate my system in bits for checks, tightening and dust blowing off starting with my Charge Controller with pictures attached.

However, I found something worthy of monitoring. The Battery negative line appears to be burning gradually from the inside. Gradually I mean after about 3years. I may have to monitor this over time and consider changing...

This is just to share and remind us to prepare our systems for yet another year for optimization and or any words/contribution

would suggest getting the burnt area changed No need waiting any longer. Also they should ensure it's tightened enough.

Also you could get a blower to help make life a bit easier for you

bassdow:
would suggest getting the burnt area changed No need waiting any longer. Also they should ensure it's tightened enough.

Also you could get a blower to help make life a bit easier for you

Changing that requires taking out the board and soldingring the other end. Would handle myself when I would be ready.

First is to use a brush, the iron part of the pencil brush is taped off to avoid bridging of any kind, then blower was used. Job done already and put back to service...

jamesid29:
Sorry for the late response Chief. I no too dey check Nairaland like before again. Na just now I see your response.

Yeah, wanted to see if we could negotiate on the one you had so I can test it out before ordering the 14 I needed.

But no issues boss, I don sort am out. Thanks for the recommendation. I really appreciate it 🙏🙏

Alright, cool. Which did you eventually buy and how much?

Gshems:
I have a 12v 100ah joykoo lifepo4 for sale. Used for 1 month

Reason for sale, and price.

Trippledots:
Reason for sale, and price.

I need a Haisic 1.5kw inverter in Lagos. Who has for sale?

HeavenlyBang:
I need a Haisic 1.5kw inverter in Lagos. Who has for sale?

Linnov8