₦airaland Forum

mctfopt:
Oh I see. If LFP it can take all.

Yeah, so can AGM.. I am still 4 years away from getting LFP. I am still not sold on it yet. The tech is still too bleeding edge and expensive for now.. a 140AH pylon setup would cost close to 1.4m (at N360/$) If I spend N500k on 4 Quanta batteries I would get 400A which would serve me for 4 years of diligent use.. I can then turn the 900k to dollars and put it in a eurobond account for the life time of the Quanta (4 years) by 2024.. my dollar investment would of grown.. Lithium batteries would have gotten better and cheaper and I might still be able to buy the cheaper more efficient and more capacity lithium from the eurobond investment. Economics of Lithium doesn't work for me .. yet.

bigrovar:
Yeah, so can AGM.. I am still 4 years away from getting LFP. I am still not sold on it yet. The tech is still too bleeding edge and expensive for now.. a 140AH pylon setup would cost close to 1.4m (at N360/$) If I spend N500k on 4 Quanta batteries I would get 400A which would serve me for 4 years of diligent use.. I can then turn the 900k to dollars and put it in a eurobond account for the life time of the Quanta (4 years) by 2024.. my dollar investment would of grown.. Lithium batteries would have gotten better and cheaper and I might still be able to buy the cheaper more efficient and more capacity lithium from the eurobond investment. Economics of Lithium doesn't work for me .. yet.

Yeah, that makes sense too. LFP of that make is still expensive. Most DIYers are mostly rocking the cheaper options.

200Ah, 24v felicity lithium battery available, #400000. Call/WhatsApp us on 08168986461

32inches LG solar TV available, #40000. Call/WhatsApp us on 08168986461.

mctfopt:
Yeah, that makes sense too. LFP of that make is still expensive. Most DIYers are mostly rocking the cheaper options.

Which is true but still very very expensive, an expensive experiment which often time ends up in failure.. You know why? Lithium is very very complicated and has many component all of which have to work just right. Lithium has very little margin of error in setup.. You have to get the right cell from the right cell maker, you have to ensure the cells are well balanced, you have to get the right BMS, right charger sometimes the right inverter.. One mistake and poof all goes up in smoke.. and they often do more often than not you just don't hear that part in the songs

Many on here have dipped their hands in lithium and gotten burned badly and suffer their loses in silence.. You will hear them throwing specs like 3000 cycles at 80% dod lol.. what u don't here is the case where the bank (if you are lucky) just stop working after like a year.. They just stop..

Lithium is the future no doubt.. Just waiting for the dust to settle.. maybe when reputable chinese solar maker like episolar start doing lithium then you can take a cue that it is time to give it a look. for now I will advise wait for the second iteration before you look that way

bigrovar:
Which is true but still very very expensive, an expensive experiment which often time ends up in failure.. You know why? Lithium is very very complicated and has many component all of which have to work just right. Lithium has very little margin of error in setup.. You have to get the right cell from the right cell maker, you have to ensure the cells are well balanced, you have to get the right BMS, right charger sometimes the right inverter.. One mistake and poof all goes up in smoke.. and they often do more often than not you just don't hear that part in the songs

Many on here have dipped their hands in lithium and gotten burned badly and suffer their loses in silence.. You will hear them throwing specs like 3000 cycles at 80% dod lol.. what u don't here is the case where the bank (if you are lucky) just stop working after like a year.. They just stop..

Lithium is the future no doubt.. Just waiting for the dust to settle.. maybe when reputable chinese solar maker like episolar start doing lithium then you can take a cue that it is time to give it a look. for now I will advise wait for the second iteration before you look that way

Too late to wait. I'm enjoying LFP already and I doubt I'll ever go back to lead acid

I love watching 100A flow into em banks and get it floating before 2 hours. Even if it fails tomorrow, it's been nice rocking it.

Congratulations

mctfopt:
Too late to wait. I'm enjoying LFP already and I doubt I'll ever go back to lead acid

I love watching 100A flow into em banks and get it floating before 2 hours. Even if it fails tomorrow, it's been nice rocking it.

mctfopt:
Too late to wait. I'm enjoying LFP already and I doubt I'll ever go back to lead acid

I love watching 100A flow into em banks and get it floating before 2 hours. Even if it fails tomorrow, it's been nice rocking it.

Congrats.. keenly watching and taking notes

bigrovar:
Congrats.. keenly watching and taking notes

Thanks a lot.

TOPAI7:
Congratulations

Thanks man.

justcallmenuel:
32inches LG solar TV available, #35000. Call/WhatsApp us on 08168986461.

You are here busy advertising.....
Why did you have to send 1kVa instead of 1.2kva inverter as agreed upon? You will have to explain to me cos I was the one that gave a friend your number to buy from you and in the process I had to order through him and you sent a lower spec.

bigrovar:
Which is true but still very very expensive, an expensive experiment which often time ends up in failure.. You know why? Lithium is very very complicated and has many component all of which have to work just right. Lithium has very little margin of error in setup.. You have to get the right cell from the right cell maker, you have to ensure the cells are well balanced, you have to get the right BMS, right charger sometimes the right inverter.. One mistake and poof all goes up in smoke.. and they often do more often than not you just don't hear that part in the songs

Many on here have dipped their hands in lithium and gotten burned badly and suffer their loses in silence.. You will hear them throwing specs like 3000 cycles at 80% dod lol.. what u don't here is the case where the bank (if you are lucky) just stop working after like a year.. They just stop..

Lithium is the future no doubt.. Just waiting for the dust to settle.. maybe when reputable chinese solar maker like episolar start doing lithium then you can take a cue that it is time to give it a look. for now I will advise wait for the second iteration before you look that way

That will be interesting to hear the experience of those people, I certainly agree that having a balanced cell is very important for LFP, I have experienced that with mine but once the cells are balanced it hardly get unbalanced so long as the balancer is doing it's job (it's why I still don't think using an LFP without BMS is a good idea).

As one who started using LFP this year, I am enjoying it and won't mind sharing my disappointment when one occurs even if some will laugh at me for that but for now DIY LFP rocks and the cost isn't bank crushing like the pylons

mctfopt:
Too late to wait. I'm enjoying LFP already and I doubt I'll ever go back to lead acid

I love watching 100A flow into em banks and get it floating before 2 hours. Even if it fails tomorrow, it's been nice rocking it.

Lol.....I guess this is a 200AH LFP right? 0.5C is not bad....mine is limited by 60A BMS installed in it (and my current charger)....I may be unpacking in future when my ANT BMS arrives and GK comes back alive.
What's the cable size you have from the controller to the battery?

ojeysky:
That will be interesting to hear the experience of those people, I certainly agree that having a balanced cell is very important for LFP, I have experienced that with mine but once the cells are balanced it hardly get unbalanced so long as the balancer is doing it's job (it's why I still don't think using an LFP without BMS is a good idea).

As one who started using LFP this year, I am enjoying it and won't mind sharing my disappointment when one occurs even if some will laugh at me for that but for now DIY LFP rocks and the cost isn't bank crushing like the pylons

As someone using this for a while now which of the balancing do you think is best for inverter use of these batteries, top or bottom balancing?

I just got part of my batteries (pictures attached) and would like to balance them when finally complete before I start using. Corona has hampered their early delivery though, I no dey shout.

@bigrovar gave a lot of scary scenarios I would have love to dispute with him but since I've not yet used Lithium before I just decided to keep quiet. With my Lead Acid experiences though if this Lithium I'm aiming for packs up after one year I won't cry at the money lost and would likely go for another set of Lithium next time.

bigrovar:
Yeah, so can AGM.. I am still 4 years away from getting LFP. I am still not sold on it yet. The tech is still too bleeding edge and expensive for now.. a 140AH pylon setup would cost close to 1.4m (at N360/$) If I spend N500k on 4 Quanta batteries I would get 400A which would serve me for 4 years of diligent use.. I can then turn the 900k to dollars and put it in a eurobond account for the life time of the Quanta (4 years) by 2024.. my dollar investment would of grown.. Lithium batteries would have gotten better and cheaper and I might still be able to buy the cheaper more efficient and more capacity lithium from the eurobond investment. Economics of Lithium doesn't work for me .. yet.

Which brand of Quanta batteries will you recommend, if you're to buy Quanta batteries today which brand will you go for?

essegis:
As someone using this for a while now which of the balancing do you think is best for inverter use of these batteries, top or bottom balancing?

I just got part of my batteries (pictures attached) and would like to balance them when finally complete before I start using. Corona has hampered their early delivery though, I no dey shout.

@bigrovar gave a lot of scary scenarios I would have love to dispute with him but since I've not yet used Lithium before I just decided to keep quiet. With my Lead Acid experiences though if this Lithium I'm aiming for packs up after one year I won't cry at the money lost and would likely go for another set of Lithium next time.

It's just 4 months usage and mine was a packaged DIY, I recently noticed it's a little unbalanced and the Daly BMS is not doing a good balancing job so I will either have to do it the manual way, semi manual or wait till when my ANT BMS with an active balancer arrives. No thanks to covid-19 at the moment.

To your question, my response is based on my study and what I will be doing if I have new cells (I am also trying to increase my capacity, I have 4 cells already waiting for the rest), when they arrive I will bottom balance by making sure the voltage is almost the same (with max of 0.02 diff), I will then parallel all the cells together and leave it for a day to allow for proper voltage level and capacity sync. If that is properly done with a proper BMS installed then you won't need balance for several months to come (with all things been equal) as the BMS will handle little lags.

The above is what I call the manual way, the semi-manual involves identifying the cells that is moving faster than his team and adding sufficient drain to the cell once it's passes 3.4 so that the rest of the cells can meet up with its voltage level while charging which is top balancing

That said, what's the specs of your cells? As they seem long and wider than the normal prismatic cells

ojeysky:
It's just 4 months usage and mine was a packaged DIY, I recently noticed it's a little unbalanced and the Daly BMS is not doing a good balancing job so I will either have to do it the manual way, semi manual or wait till when my ANT BMS with an active balancer arrives. No thanks to covid-19 at the moment.

To your question, my response is based on my study and what I will be doing if I have new cells (I am also trying to increase my capacity, I have 4 cells already waiting for the rest), when they arrive I will bottom balance by making sure the voltage is almost the same (with max of 0.02 diff), I will then parallel all the cells together and leave it for a day to allow for proper voltage level and capacity sync. If that is properly done with a proper BMS installed then you won't need balance for several months to come (with all things been equal) as the BMS will handle little lags.

The above is what I call the manual way, the semi-manual involves identifying the cells that is moving faster than his team and adding sufficient drain to the cell once it's passes 3.4 so that the rest of the cells can meet up with its voltage level while charging which is top balancing

That said, what's the specs of your cells? As they seem long and wider than the normal prismatic cells

Oh, these are called Nissan Leaf batteries. Removed from a Nissan Leaf electric car. They are not actually LiFePO4 but a variation of Lithium with Nickel Cobalt additives and a nominal voltage of 3.7v.

Reason I'm a little confused with best form of balancing to employ is because I have not actually employed them to use in my house so I don't know if they will last a full day before running out. If they do I think bottom balancing should be done to allow them drain out equally but if they don't which means they will hardly get to low cut before being charged again next day by solar then I will carry out top balancing on them.

Most knowledge now is from YouTube but I expect them to work for me. See my write up on my intended set-up below. The house can review and help with positive criticisms if they think they will work or not. All my batteries are bought already used.

essegis:
Oh, these are called Nissan Leaf batteries. Removed from a Nissan Leaf electric car. They are not actually LiFePO4 but a variation of Lithium with Nickel Cobalt additives and a nominal voltage of 3.7v.

Reason I'm a little confused with best form of balancing to employ is because I have not actually employed them to use in my house so I don't know if they will last a full day before running out. If they do I think bottom balancing should be done to allow them drain out equally but if they don't which means they will hardly get to low cut before being charged again next day by solar then I will carry out top balancing on them.

Most knowledge now is from YouTube but I expect them to work for me. See my write up on my intended set-up below. The house can review and help with positive criticisms if they think they will work or not. All my batteries are bought already used.

I think that you should not miss that initial bottom balancing and paralleling, am not sure the few minutes paralleling will be sufficient but since this isn't Lifepo4 perhaps this will behave differently. That said what's the capacity of each of the cells and how much did you get them? From your plan it seem you are looking to build a very significant storage.

The 3.7v is closer to conventional inverter voltage range and should make the LVD easier to administer since a typical 24v setup will be 22.2v(6S) instead of 25.6(8S) that we have in LFPs

ojeysky:
I think that you should not miss that initial bottom balancing and paralleling, am not sure the few minutes paralleling will be sufficient but since this isn't Lifepo4 perhaps this will behave differently. That said what's the capacity of each of the cells and how much did you get them? From your plan it seem you are looking to build a very significant storage.

The 3.7v is closer to conventional inverter voltage range and should make the LVD easier to administer since a typical 24v setup will be 22.2v(6S) instead of 25.6(8S) that we have in LFPs

Even for top balancing I will still have to parallel them. Only difference will be a charge would be applied to them as against discharge when it's bottom balancing.

As for the cells they are rated at 66AH, 500WH. But these cells are not new and they being used initially in an electric car one does not know the condition they are coming with. Though seller sold at 65% capacity and a lot of folks have been getting that or higher.

I don't know what you mean by significant storage as they are not brand new. I ended up buying 57 modules though at an overall price of just above $2000 (a full pack containing 48 modules then 9 extra).....the shipping cost a arm and a leg sha oo. Planning to set them up in 14s for a 48v system and yes I won't have to go digging too much before I can get inverters that will work within the sweet spot voltages of this system. They are compatible with most inverters out there.

ojeysky:
Lol.....I guess this is a 200AH LFP right? 0.5C is not bad....mine is limited by 60A BMS installed in it (and my current charger)....I may be unpacking in future when my ANT BMS arrives and GK comes back alive.
What's the cable size you have from the controller to the battery?

Oh, that's 50mm² the LFP is 280AH. Oh, your ANT BMS still enroute? Cool.

mctfopt:
Oh, that's 50mm² the LFP is 280AH. Oh, your ANT BMS still enroute? Cool.

50mm cable? Wow that must be quite heavy, yeah BMS still on the way without clarity on when it will arrive...... Very unpredictable time we are in.

ojeysky:
50mm cable? Wow that must be quite heavy, yeah BMS still on the way without clarity on when it will arrive...... Very unpredictable time we are in.

But post offices are working, just not at full capacity. I just wish they should prioritize post. Even in NYC, the epicenter of the Covid19 pandemic in the US, the post still works efficiently. But in Nigeria, things are usually upside down

essegis:
Even for top balancing I will still have to parallel them. Only difference will be a charge would be applied to them as against discharge when it's bottom balancing.

As for the cells they are rated at 66AH, 500WH. But these cells are not new and they being used initially in an electric car one does not know the condition they are coming with. Though seller sold at 65% capacity and a lot of folks have been getting that or higher.

I don't know what you mean by significant storage as they are not brand new. I ended up buying 57 modules though at an overall price of just above $2000 (a full pack containing 48 modules then 9 extra).....the shipping cost a arm and a leg sha oo. Planning to set them up in 14s for a 48v system and yes I won't have to go digging too much before I can get inverters that will work within the sweet spot voltages of this system. They are compatible with most inverters out there.

I meant the storage back will be high, over 12kwh is not a small something o.....I can imagine the shipping will be expensive considering it seem to have metal casing as well. All the best with your DIY, do keep us posted on your adventure.

spartacus11:
Which brand of Quanta batteries will you recommend, if you're to buy Quanta batteries today which brand will you go for?

I don't understand this question. Quanta is quanta.. or do you mean distribution because I am aware there are 2 distributors for quanta products now.

mctfopt:
But post offices are working, just not at full capacity. I just wish they should prioritize post. Even in NYC, the epicenter of the Covid19 pandemic in the US, the post still works efficiently. But in Nigeria, things are usually upside down

Post offices in my state was on lock and key until this week that they are opening 3 times a week, having not yet received a call planning to check on them by next week.

Edit: So I thought post office were open until I called one of the staff today who said it's only post office with level 13 and above their post office does not have any person at that level hence they remain locked up

ojeysky:
Post offices in my state was on lock and key until this week that they are opening 3 times a week, having not yet received a call planning to check on them by next week.

That's a little progress, the truth is we should learn to live with Covid19. The bitter pill to swallow is that Covid19 is here to stay until a vaccine or cure is gotten.

6pcs of fairly used very clean 200w mono solar panels for sale @ affordable price. location yenagoa bayelsa state. can be waybilled to anywhere. whatsapp me 080-8541-5985..

..

bigrovar:
I don't understand this question. Quanta is quanta.. or do you mean distribution because I am aware there are 2 distributors for quanta products now.

Sorry was thinking Quanta batteries as a type of lead acid battery like AGM and GEL

Didn't know it was a brand

Got it now

ojeysky:
I meant the storage back will be high, over 12kwh is not a small something o.....I can imagine the shipping will be expensive considering it seem to have metal casing as well. All the best with your DIY, do keep us posted on your adventure.

My present AGM at 1200ah 12v already is more than 12kwh. This necessitated my thinking to go for the batteries this way. The AGM don't last up to morning again and na only 3 fans they run at night. They weren't bought new sha and have lasted 3yrs so I'm not really crying about them. They have lasted their lasting.

A couple of things bought me over to Lithium batteries especially the lack of memory. That makes every purchase a new battery easily increasing one's packs without fear which is impossible with the conventional Lead Acid batteries. Just praying they last me sha and I will post every step on my YouTube channel here. Kindly subscribe.

Smiggle's Vibes: https://www.youtube.com/channel/UCGGgBRPftSYPUtzjewvU26A

essegis:
My present AGM at 1200ah 12v already is more than 12kwh. This necessitated my thinking to go for the batteries this way. The AGM don't last up to morning again and na only 3 fans they run at night. They weren't bought new sha and have lasted 3yrs so I'm not really crying about them. They have lasted their lasting.

A couple of things bought me over to Lithium batteries especially the lack of memory. That makes every purchase a new battery easily increasing one's packs without fear which is impossible with the conventional Lead Acid batteries. Just praying they last me sha and I will post every step on my YouTube channel here. Kindly subscribe.

Smiggle's Vibes: https://www.youtube.com/channel/UCGGgBRPftSYPUtzjewvU26A

On paper yes but in practice, you will safely get more juice out of a 12kwh lithium than a 14kwh AGM.

Who knows any SMA inverter dealer in Nigeria

Good Day House.

I need your advice please. It's possible that my request has been covered here already, but there are now 735 pages to read, and I've tried to skim through, but can't find any, thus my request.

I intend to install an inverter system in my house; for now without solar panel. My house is a 4 bedroom, and I've been told a 3.5kva can power the basic things, namely; lighting, four fans(54watts each), 2 tvs(55inch each), and a small scanfrost freezer.

I'll want to know what I'll require to achieve this, the cost if possible, and the most reliable brands in terms of inverter and batteries. Also whether to use wet or dry cell batteries(talking about durability and efficiency).

I'm sorry for troubling you.

Thanks.

Kindly quote me if responding to my request pls. That will be very helpful.