godspeed:


Lemme see a pic of the controller

NB each of my panel is 24v

Hello, it dosnt matter if your panel is 24v.. We have done so many 12v solar installation's with 24v PV modules using the ep solar 12/24v auto sensing mppt without any issue till date.
Note: The mppt as displayed below still keeps serving you even when you decide to upgrade to a 24v system . Cheer's !

How do you know each of ur panel is 24v? Cos that installer said so? Do you have a pic of the panel nameplate?

godspeed:


Lemme see a pic of the controller

NB each of my panel is 24v

DMerciful:
How do you know each of ur panel is 24v? Cos that installer said so? Do you have a pic of the panel nameplate?

How much does this go for

I'll prefer 40 amps

There is no information on the cartoon, it only says "flame solar"

dear house, please consider and correct me if I am wrong. can a bmv be used to turn off an inverter when battery voltage reached a certain low point by wiring it with a relay to the inverter switch? ( I have always assumed that's partly is what the relay function is. just like that opposite of what this position did
https://www.youtube.com/watch?v=1PzL-ZjKxds ). is it not wiser to switch off the inverter rather than disconnect the batteries when they get to a set low voltage point? I also noticed that many premium charge controllers (midnite, flexmax, Schneider) have an auxillary output, can this also be used to achieve this? Steve Robertson uses this function to turn on his DC water heater
https://www.youtube.com/watch?v=tnwH10lCfpw (skip to 3min 30sec) and
https://www.youtube.com/watch?v=cEMIz1TGQn8 (skip to 3:55). if this can be done, please explain how it should be connected. PS: I have next to zero knowledge about electricity.

This is 40A.....60k

godspeed:


How much does this go for

I'll prefer 40 amps

There is no information on the cartoon, it only says "flame solar"

Barezzi:
I sold my premium Magnum inverter and bought a Gennex hybrid.
It has settings that allow intentional islanding and grid passthru with the charger off.

I have forgotten, but i think the magnum allows you to set the charge current to zero.

Ahh... I see.. Thanks for the headsup

GeorgeD1:
chuckdee,
if you're using the magnum ms4348pe with the advanced remote me-arc50,
there is a button for turning off the charger completely. Also, you can program
the charger to cut-off and cut-in at certain times of the day, say from 6am to
6pm. This among many options make the magnum a very robust beast of an
inverter.

Nice!... I hv the remote and I will tinker to search for that setting within... Thanks GeorgeD

Saipro:


Pretty risky assumption and could lead to early battery failure. Inverter and cabling inefficiencies usually total a minimum of 15% of the power (translated as 85% efficiency). Your 20A pragmatically becomes 17A (assuming C/10 discharge).

Most FLA batteries won't safely take beyond C/8 as discharge (AGM often can tolerate higher). Assuming the stress limit of C/8, that's 21A (though I see no point in pushing batteries to their limits unless absolutely necessary).

Then there's the issue of variable inverter self-consumption ...

hmmm, who do I believe now??.
earlier, some1 said it doesn't matter...that's its only the runtime that it would reduce..i feel its not healthy for the battery, but need science to back it up.
when fully charged, at 50.4v, my 2kw steam iron draws the fla batt voltage to 48.4v, I want 2 know if there is any harm in continuing with this practise

They are finally here. #Tesla Smart Lithium Ion. They will be installed this week

Yaaay.

Good morning Oga Chris. Please we eagerly await the installation pics and the performance review after you have used them awhile in production.

chris81964:
They are finally here. #Tesla Smart Lithium Ion. They will be installed this week

None is right or wrong.

My hard experience tells me that most C10 batteries (e.g. Genus sealed, Luminous sealed/Gel) do not live up to that rating when (ab)used in production.

I would rather go with a C20 rating for any Lead Acid battery which in my view gives the best tradeoff between longevity and performance and value. C100 is nice but impractical/unaffordable for most normal folks.

In layman's English your 48v 200Ah battery bank at C20 should be discharged/carry loads no more than 10 DC Amps (approximately 500watts) on a normal day to day basis. Occasional bursts e.g your 2kw steam iron adding ~40 DC amps instantaneous to the mix are permitted - the iron will cycle on (draw 2Kw) for less than a minute at a time anyways so there should be no long term adverse effects. I can assure you further that all experts are unanimous that it is normal for battery voltage to cave in (drop sharply) when a large load is suddenly applied.

In your scenario and for most other RE users, this is about the only way to get by.

AGMs are said to handle burst loads better but you don't have those so really no point going there...

On a lighter note 2Kw is a massive iron size for a residential application but I would say just keep your average loads + inverter self consumption under the 600watts mark on the average and you should be good.

Reprobate:


hmmm, who do I believe now??.
earlier, some1 said it doesn't matter...that's its only the runtime that it would reduce..i feel its not healthy for the battery, but need science to back it up.
when fully charged, at 50.4v, my 2kw steam iron draws the fla batt voltage to 48.4v, I want 2 know if there is any harm in continuing with this practise

Hit or miss. The quality of items varies per import batch and per seller even and also a lot of fakes/inferior quality rebadged/rebranded as the real deal with everybody claiming his own product is the genuine article.

If you must, you will be better off going through a trusted insider who can take you by the hand and guide you right - of course all this will add to your cost.

If I were you, I would bite the bullet and go straight to source to get a reputable battery brand - you will be surprised you could save 5k to 20k per battery if you eliminate the middle man

EnigmaticEnigma:
Does anyone have any experience buying batteries from Alaba??

Thanks to JUO, I finally found a battery guy willing to come to Lekki for the battery post repairs.

The family is now happy again as they can use their full battery bank.

See before and after pics below - couldn't wait till the end but he filled out any uneven or thin areas and sanded down the final product for smoothness

efuro:


Close to 30yrs, was the first time I had seen a battery charger using size AA Berec battery cathode and 12v DC to weld. Today am sure they must have mastered the skills


As DIY.
If am in your shoes, I will just weld 35mm cable permanently to the terminal and long enough to disallow it pulling off the terminal. Such a battery is too good to be idle.

Oga Niyi, with your taste & level of professionalism, I know my suggestion may look crude but keep the house posted so that we can learn.

Final battery balancer results - shared with the client's permission.

4 units of US Battery 6v L16s in series to make a 24v nominal battery bank - middle top meter displays voltage for the whole system while the 4 smaller meters below the big one display for the individual batteries.

1st Pic - before balancer was installed

2nd Pic - 2 weeks of using the balancer

3rd Pic - ~3 months of using the balancer

chris81964:
They are finally here. #Tesla Smart Lithium Ion. They will be installed this week

Very Nice to see a move to 18650's

one of the best battery available....

may i ask some questions?

1. how do u plan to balance the battery pack?

2. what inveter are u using it on?


i have been working with 18650's for a while now.


thanks

totalgreen01:


Very Nice to see a move to 18650's

one of the best battery available....

may i ask some questions?

1. how do u plan to balance the battery pack?

2. what inveter are u using it on?


i have been working with 18650's for a while now.


thanks

I JEALOUS U.. well well.

i am in need of 6v L16

just one piece, any contact?

NiyiOmoIyunade:
Hit or miss. The quality of items varies per import batch and per seller even and also a lot of fakes/inferior quality rebadged/rebranded as the real deal with everybody claiming his own product is the genuine article.

If you must, you will be better off going through a trusted insider who can take you by the hand and guide you right - of course all this will add to your cost.

If I were you, I would bite the bullet and go straight to source to get a reputable battery brand - you will be surprised you could save 5k to 20k per battery if you eliminate the middle man

Thanks Niyi, I found some sellers on Jiji and spoke to a female seller who sounded trustworthy.

I'm based in V.I and I can't make it all the way there, cause of my schedule.

I told the woman to bring one battery first, that way I can run a capacity test on it with a 100watt fridge using a 12v inverter. If I get anywhere close to 200ah then I will buy more from her.

Please is this a good strategy to take? The battery in question is called "UNILITE", it's 200ah for 73K.

My last batteries where GLT - 80k and Mercury 98k, both brands died in a year, so I don't see the point in spending close to 100k or over 100k per battery. If i want to do that, then it'll have to be for Trojans straight from the U.S.A or something like that.

She is coming today, bros abeg, what do you think of the capacity testing That should be a good indicator of battery strength and longevity if I get at least 10+ hours running the fridge right Then I can buy 3 more from her.

chris81964:
They are finally here. #Tesla Smart Lithium Ion. They will be installed this week

Good stuff ! Jisie ike nwanne m nwoke

chris81964:
They are finally here. #Tesla Smart Lithium Ion. They will be installed this week

chai

damn bro, that looks like a helluva good battery.

how do you plan on charging that thing

Weeeeelllll..... I think every battery will do fairly well on the initial capacity test. But will it retain that performance 6 months ..... 1 year down the road? - properly used a battery should give you at least two years before it conks off.

How deeply did you cycle your old batteries that died within a year? Did the inverter used to beep off from low battery? What kind of inverter is it? Was the inverter capable of delivering a proper voltage charge to the batteries? Did the batteries get a proper full charge on a regular basis? How many batteries did you use? What kind and wattage of appliances did you load on the batteries?

The above are some of the questions you need to provide answers to before we can make informed comments about battery longevity or performance.

All batteries whether premium or budget will die quickly if abused - a good battery properly used should give reliable performance 2 years and upwards.

EnigmaticEnigma:


Thanks Niyi, I found some sellers on Jiji and spoke to a female seller who sounded trustworthy.

I'm based in V.I and I can't make it all the way there, cause of my schedule.

I told the woman to bring one battery first, that way I can run a capacity test on it with a 100watt fridge using a 12v inverter. If I get anywhere close to 200ah then I will buy more from her.

Please is this a good strategy to take? The battery in question is called "UNILITE", it's 200ah for 73K.

My last batteries where GLT - 80k and Mercury 98k, both brands died in a year, so I don't see the point in spending close to 100k or over 100k per battery. If i want to do that, then it'll have to be for Trojans straight from the U.S.A or something like that.

She is coming today, bros abeg, what do you think of the capacity testing That should be a good indicator of battery strength and longevity if I get at least 10+ hours running the fridge right Then I can buy 3 more from her.

Reprobate:


hmmm, who do I believe now??.
earlier, some1 said it doesn't matter...that's its only the runtime that it would reduce..i feel its not healthy for the battery, but need science to back it up.
when fully charged, at 50.4v, my 2kw steam iron draws the fla batt voltage to 48.4v, I want 2 know if there is any harm in continuing with this practise

No one. Read it up yourself. Battery capacity is relative to their discharge rate. Some are sized for 20 hours discharge optimum others for 10 hours discharge. A 200ah battery at 20 hours theoretically means to actually get 200ah you have to discharge it at the rate of 10Ah at which point it would last 20 hours.. A higher discharge means an exponentially shorter battery time and ah. Although 10ah is the safe limit of a 200ah battery at c20. It is advisable to stay well below the limit.. Because most batteries in the market have inflated ah ratings a battery rated 200ah might actually be 180ah if you are lucky.. Some premium brands are also affected by this issue although a bit less hence staying well below c20 discharge rate ensures keeps u within real capacity of the battery. Also in life as in engineering and physics things generally last longer when you use them below officially recommended capacity limits. I generally discharge my battery at C40 / C30 only time the battery gets heavy discharge is between 7pm and 11apm (a 4 hours window) even then they are still discharged below C20 ratings.

So to keep it simple. The less you discharge your battery the more the more you get out of them and they more they last. But you don't have to believe anything I have just said. You can always read it up yourself.

NiyiOmoIyunade:
None is right or wrong.

My hard experience tells me that most C10 batteries (e.g. Genus sealed, Luminous sealed/Gel) do not live up to that rating when (ab)used in production.

I would rather go with a C20 rating for any Lead Acid battery which in my view gives the best tradeoff between longevity and performance and value. C100 is nice but impractical/unaffordable for most normal folks
.....
On a lighter note 2Kw is a massive iron size for a residential application but I would say just keep your average loads + inverter self consumption under the 600watts mark on the average and you should be good.

I can't but agree with you on these points

USED VICTRON ENERGY BLUE SOLAR CHARGER( USED FOR 1 YEAR) WITH ORIGINAL BOX

IN VERY GOOD WORKING CONDITION( SELLING DUE TO UPGRADED TO 85A)

150V/70A

@105K

PLS CALL OLA 09057285592

SOLD! SOLD!! SOLD!!!

Reprobate:


hmmm, who do I believe now??.
earlier, some1 said it doesn't matter...that's its only the runtime that it would reduce..i feel its not healthy for the battery, but need science to back it up.
when fully charged, at 50.4v, my 2kw steam iron draws the fla batt voltage to 48.4v, I want 2 know if there is any harm in continuing with this practise

I advice you get a small iron for inverter use. I once got a 700W iron at Spar some years ago. I have tried looking for the same brand/type everywhere without result. Anybody knows where I can find one?

S007:


I advice you get a small iron for inverter use. I once got a 700W iron at Spar some years ago. I have tried looking for the same brand/type everywhere without result. Anybody knows where I can find one?

have been searching for such steam iron..no luck..th3 least i saw was 1450w..n its the automatic steam type.i need the manual steam type.
busz me if u see such

NiyiOmoIyunade:
Yaaay.

Good morning Oga Chris. Please we eagerly await the installation pics and the performance review after you have used them awhile in production.

A client paid for them. They will be installed for him in Port Harcourt hopefully on Friday. My team will do pictures and videos

[quote author=EnigmaticEnigma post=68432687]

chai

damn bro, that looks like a helluva good battery.

how do you plan on charging that thing[/quote

3.2 Kw in PV and 100 amps from a Victron Quattro

totalgreen01:


Very Nice to see a move to 18650's

one of the best battery available....

may i ask some questions?

1. how do u plan to balance the battery pack?

2. what inveter are u using it on?


i have been working with 18650's for a while now.


thanks

Thank you sir.
1. I am waiting for a batrium BMS.
Till it comes we will limit the max charge and discharge to between .5 and 1 V above the max discharge and one volt below the max charge.

2. Victron Quattro
I salute people who will work with individual 18650 cells. I lack the patience or ability to do what you do. This battery already comes with everything in it including an internal BMS.

EnigmaticEnigma:


chai

damn bro, that looks like a helluva good battery.

how do you plan on charging that thing

Thank you. There are two 48 V batteries. 3 kwh each of them. Solar. We will have a Victron 250/100 amp MPPT attached to 3.2 kw in PV and A Victron Quattro that is connected to the grid and an 80 Kva gen set.

NiyiOmoIyunade:
Weeeeelllll..... I think every battery will do fairly well on the initial capacity test. But will it retain that performance 6 months ..... 1 year down the road? - properly used a battery should give you at least two years before it conks off.

How deeply did you cycle your old batteries that died within a year? Did the inverter used to beep off from low battery? What kind of inverter is it? Was the inverter capable of delivering a proper voltage charge to the batteries? Did the batteries get a proper full charge on a regular basis? How many batteries did you use? What kind and wattage of appliances did you load on the batteries?

The above are some of the questions you need to provide answers to before we can make informed comments about battery longevity or performance.

All batteries whether premium or budget will die quickly if abused - a good battery properly used should give reliable performance 2 years and upwards.

I already talked with you about my inverter issues using my "nomoretrolling" account. Basically, one inverter only charges to 13.8v while the other PRAG 2.5kva-24v goes through bulk and absorb. I already purchased another 12v Prag that charges to an absorb of 14.1v.

The batteries were rarely abused and only died once (inverter beeps and all) while they were still in good condition. Of course, they die all the time now that they are bad.

Wish me luck, I will try the first unilite 200ah battery tomorrow and see how far. Will report back, hopefully it won't be a dud.

[quote author=chris81964 post=68438691][/quote]

Does that inverter support lithium batteries?