₦airaland Forum

FEGEITOK:
I finally fixed the inverter issue I complained about bitterly recently!

what's more helpful is telling us what the issue actually was, and what was eventually done

mctfopt:
Please how much is this?

57,000,000 (it’s an all in one).

justcallmenuel:
57,000,000 (it’s an all in one).

Is this inclusive of the 120KwP solar panels or only the 100kw PC and 215kwh battery?

oweniwe:
Why should a 1,000w inverter be limited to 600w?

The thing is vexing me

I bought a Souer 1,000w sachet inverter wey no fit carry 3 120w phone chargers at same time

But why would a phone charger be 120w each? Damn!

ask4bk:
Most Bifacials with higher wattage are cheaper than front alone panels. A bifacial of 610w is rated with the front and not the back. With the back you can get 30% above rated capacity. So you can use them on roofs if you want but you'll get more if used on a reflective place that gives the under sun light

Do you think it will give customers more value of bi-facial solar panel sellers add a reflective foil or material as a part of the purchase?

Bi facial panels give better results in solar farms. In the sense on the ground with varying degrees of elevation.
It can be beneficial more when used has a car port, has both sides will benefit from the sun.

For roof tops using bifacial panels has some disadvantages , the the degree of the inclination that you can safely do on the ground while repeating such is high risk . Wind could easily carry away your panels on the roof.

odimbannamdi:
But why would a phone charger be 120w each? Damn!

All those huge zealot speakers and power bank charging nau

Please experts in this forum. Is there any portable device I can install btw a charge controller and a 24v battery to make it disconnect from the charger controller any time it charge up to a certain level ie 29.4v? I want to stop depending solely on charge controller /BMW on this, I have seen some lq controllers charging more than the setting.
Pls

seunlayi:
Please experts in this forum. Is there any portable device I can install btw a charge controller and a 24v battery to make it disconnect from the charger controller any time it charge up to a certain level ie 29.4v? I want to stop depending solely on charge controller /BMW on this, I have seen some lq controllers charging more than the setting.
Pls

U mean a PWM charge controller n not a BMW as in d context n it's a function embedded in a charge controller to automatically truncate energy going into the battery when it's full, so u don't need any external device to perform such function

I have seen some recent cases of fire from Lithium batteries, and this has somewhat given me some concern. Maybe experienced people and builders in the house can educate us on how to prevent something like this and what to do in case of one. I believe this will go a long way for us. For instance;

My wires and protection are well sized based on recommendation.

My charging speed doesn't exceed 40 amps, in fact most times I am charging at 30 amps as my system is grid only.

My unit is in a well aerated space. Like super aerated and no heat whatsoever.

My bms is rated at 150 amps, highest I have discharged at a go is 120amps.

I am always monitoring my system and so far it's been bliss.

I don't have a fire ball or fire extinguisher yet, will be ordering one next week. How else can one protect themselves from a case of fire incident?

mctfopt:
Is this inclusive of the 120KwP solar panels or only the 100kw PC and 215kwh battery?

Solar panel not included sir

Edrizz:
U mean a PWM charge controller n not a BMW as in d context n it's a function embedded in a charge controller to automatically truncate energy going into the battery when it's full, so u don't need any external device to perform such function

My last 2-3 pmw controllers of different brand still charge the battery more than what I programmed. for instance if setting is 28.8v battery will charge to around 30v on sunny days. Someone suggested a buck controller whatever but I don't know about it

seunlayi:
My last 2-3 pmw controllers of different brand still charge the battery more than what I programmed. for instance if setting is 28.8v battery will charge to around 30v on sunny days. Someone suggested a buck controller whatever but I don't know about it

how are you doing the TEST to determine the charge voltage ?

Hope you testing after disconnecting the solar panels Oooo.

Also if using PWM, hope this is a small setUp with difference between solar panels and battery not wide ELSE should be MPPT rather than PWM

bassdow:
how are you doing the TEST to determine the charge voltage ?

Hope you testing after disconnecting the solar panels Oooo.

Also if using PWM, hope this is a small setUp with difference between solar panels and battery not wide ELSE should be MPPT rather than PWM

Test with volt meter, independent DC meter and inbuilt battery meter. Just need something to work like a cc to stop my charging when pmw is misbehaving.

seunlayi:
Test with volt meter, independent DC meter and inbuilt battery meter. Just need something to work like a cc to stop my charging when pmw is misbehaving.

Voltage display at times are -2 or -2v.
So, set your voltage lower and double check with another dc meter. If you did 28v for 24v system, it could translate to 26v or 30v.

odimbannamdi:
But why would a phone charger be 120w each? Damn!

There are some phones that can charge with 120w.
Those phones that can call heaven direct 😁😁.

Joke apart. I've a 140w charger. I charge my power bank with 100w. And i can charge pc with 30w at same time. But if you don't put any device to charge, it won't draw any watts. So the guy may have connected my phones to each 120w that 3 of them overpower his small inverter.

@ Oweniwe, inverters have power factor. That it's a 1kva inverter doesn't mean it can take 1kwh. Its a normal thing for your 1kva to take max of 600w if power factor is 0.6

CuteMaro:
I have seen some recent cases of fire from Lithium batteries, and this has somewhat given me some concern. Maybe experienced people and builders in the house can educate us on how to prevent something like this and what to do in case of one. I believe this will go a long way for us. For instance;

My wires and protection are well sized based on recommendation.

My charging speed doesn't exceed 40 amps, in fact most times I am charging at 30 amps as my system is grid only.

My unit is in a well aerated space. Like super aerated and no heat whatsoever.

My bms is rated at 150 amps, highest I have discharged at a go is 120amps.

I am always monitoring my system and so far it's been bliss.

I don't have a fire ball or fire extinguisher yet, will be ordering one next week. How else can one protect themselves from a case of fire incident?

As long as you've all of these safety features you wrote, you don't need to be scared about fire.
97% of LFP installation fire incidence is caused by underrated cables, and other accessories. Every cable will heat up when you pass through it current higher than it can take. These cables are insulated by rubber dressings that will melt and catch fire and touch other things in the room and cause fire outbreak.

justcallmenuel:
Solar panel not included sir

Thanks a lot

Got this comment from someOne in this thread "All it takes for evil to Win is for good men to do nothing"

seunlayi:
Test with volt meter, independent DC meter and inbuilt battery meter. Just need something to work like a cc to stop my charging when pmw is misbehaving.

AGM batteries can take higher than the maximum theoretical voltage but mustnt go beyond it. The dynamics between how AGM and SLA react to that higher voltage is different from how lithium do to same higher voltage.

justcallmenuel:
57,000,000 (it’s an all in one).

Considering 10kwh battery is $1,500, then 100Kwh should cost around $15,000. The 200kw inverter should cost around $10,000. Then accessories another $2,000, cabinet $1,000. At most everything should not cost more than $30k or 45m naira.

BangaRice:
AGM batteries can take higher than the maximum theoretical voltage but mustnt go beyond it. The dynamics between how AGM and SLA react to that higher voltage is different from how lithium do to same higher voltage.

Its a lithium battery, that's why I am worried whenever I noticed this. It's happening again now, it's almost 30v and when it gets to around 31v the battery will stop taking the current and controller will display 39.9v

seunlayi:
Its a lithium battery, that's why I am worried whenever I noticed this. It's happening again now, it's almost 30v and when it gets to around 31v the battery will stop taking the current and controller will display 39.9v

mayBe get a reliable charge controller that you're able to configure.

seunlayi:
Its a lithium battery, that's why I am worried whenever I noticed this. It's happening again now, it's almost 30v and when it gets to around 31v the battery will stop taking the current and controller will display 39.9v

That’s PWM for you. I also experience it. You won’t have this issue using a good MPPT. Alas, I haven’t had the time to go and fix my MPPT.

seunlayi:
It’s a lithium battery, that's why I am worried whenever I noticed this. It's happening again now, it's almost 30v and when it gets to around 31v the battery will stop taking the current and controller will display 39.9v

What is the cut off voltage you set your PWM cc to right now?
Let’s say what you set it to is 28V but it charges to 31V before it stop charging the battery which is too much for lithium battery that means it’s 3V difference from your set cut off voltage settings on the PWM cc.
If the maximum voltage you want to charge the battery to is 28.5V then go ahead and set your Cc to cut off charging at 25.5V that way it will be able to charge it to 28.5V but if the Cc is only forward by 2V then I bet you know what to do which is setting the Cc charge cut off to 26.5V.
I’ve had a PWM Cc before which has a difference of 0.4V which means if I set charge cut off voltage to 28V, it will charge my battery to 28.4V before it stop so ever since I figured it out I instead set the Cc charge voltage cut off 0.4V lesser on the Cc than what I actually want it to achieve and that’s how I did my settings and never have to worry about it anymore.

RickyM:
What is the cut off voltage you set your PWM cc to right now?
Let’s say what you set it to is 28V but it charges to 31V before it stop charging the battery which is too much for lithium battery that means it’s 3V difference from your set cut off voltage settings on the PWM cc.
If the maximum voltage you want to charge the battery to is 28.5V then go ahead and set your Cc to cut off charging at 25.5V that way it will be able to charge it to 28.5V but if the Cc is only forward by 2V then I bet you know what to do which is setting the Cc charge cut off to 26.5V.
I’ve had a PWM Cc before which has a difference of 0.4V which means if I set charge cut off voltage to 28V, it will charge my battery to 28.4V before it stop so ever since I figured it out I instead set the Cc charge voltage cut off 0.4V lesser on the Cc than what I actually want it to achieve and that’s how I did my settings and never have to worry about it anymore.

When it get to the number on my setting, the charging animation will stop which indicates it has stopped charging but from other Meters connected to the battery, , the battery volt will keep increasing until the bms decide to stop accepting it

RickyM:
What is the cut off voltage you set your PWM cc to right now?
Let’s say what you set it to is 28V but it charges to 31V before it stop charging the battery which is too much for lithium battery that means it’s 3V difference from your set cut off voltage settings on the PWM cc.
If the maximum voltage you want to charge the battery to is 28.5V then go ahead and set your Cc to cut off charging at 25.5V that way it will be able to charge it to 28.5V but if the Cc is only forward by 2V then I bet you know what to do which is setting the Cc charge cut off to 26.5V.
I’ve had a PWM Cc before which has a difference of 0.4V which means if I set charge cut off voltage to 28V, it will charge my battery to 28.4V before it stop so ever since I figured it out I instead set the Cc charge voltage cut off 0.4V lesser on the Cc than what I actually want it to achieve and that’s how I did my settings and never have to worry about it anymore.

and I will try this your suggestion too by reducing it to around 27.3v and see where it will stop sending to the battery

BigDickProblems:
That’s PWM for you. I also experience it. You won’t have this issue using a good MPPT. Alas, I haven’t had the time to go and fix my MPPT.

I am thinking if I can get a component that will stop the sending of current to the battery when full or maybe I should bypass the bms and connect inveter directly to the B- inside the battery and only connect the changing cable from controller to the battery P-.

bassdow:
what's more helpful is telling us what the issue actually was, and what was eventually done

But I did

justcallmenuel:
12kw 48v Growatt hybrid inverter ES model available now.

What is the recommended total PV input to this inverter? 6000w per Mppt?