₦airaland Forum

Lots of factors could cause it also. Which includes but not limited to Charging Battery with wrong Battery Profile. Eg. Charging Lithium Battery with Flooded Battery Profile.
Battery pack assembled without a capable BMS, Absence of safety fuses, improper sizing of Wires, Placing Battery without proper cooling and ventilation. Etc.

mctfopt:
I've seen a small pack of 1kwh lithium gut a shop. Everything inside was gone. This happened in the afternoon with people around. Battery fire is no joke. Hence best to use the best of everything. The cause of the fire was charging the battery directly without a charge controller.

Here you go: 0803 325 2184
We have on ground for
15KW N3.8m
25kw N6m

Next shipment will arrive towards the end of September. To distributed from mid October.

We can't give price until the goods arrives to the warehouse.

FEGEITOK:
How can I reach you?

How much should I budget for 15KW or the 25KW Felicity Lithium Battery? Inclusive of Shipping.

How long does it take to arrive from China?

Response from Felicity
"The only way to monitor the felicity charge controller energy flow is via the screen"

compunigeria:
Morning my ogas(s) at the top. Please i need clarification.
1. Is there any simple way one can read daily energy yield/ generation ( KWH) from Felicity charge controllers ? Either from the device itself or with the use of other affordable and simple to use accessories.
2. Are there other good mppt charge controllers within the price range of felicity that can show the data?

@adrusa, @xtremeidea, @zeestone99,@ jonescosmos @DaniellaDokubo @others please.

That's it. You caught it in the act. Now you know what to do.

HeavenlyBang:
Spot on. Seems to be dropping below the working voltage threshold intermittently just like you said.

It's about the Voltage bros. 133v X 2.2a = 292.6W

Once it tries to draw energy from the PV at the voltage of 133V, there will be a drop of like 5-10% drop in voltage and that will almost drop below the startup voltage 120V.
So the inverter will ignore the PVs and wait for the voltage to rise (what you noticed when it suddenly started working is that the sun intensity increased at a good temperature) so your inverter managed to draw energy without loosing voltage below threshold.

TO RESOLVE THIS: Add 1 or 2 more panels to your string and you should be good to go.

HeavenlyBang:
Working voltage range is 120v+
Voltage was at 133v, so it's not that, I believe.

Charge Controllers does not share Strings/Arrays. It will not work.

Almost all MPPT controllers do a quick Voc measurement to determine where to start their MPPT search. They start their search 75% to 80% of Voc.
If the two MPPT's aren't in sync with each other, it might not work because they will fight over control of the circuit. PWM controllers should be fine in most circumstances But I wouldn't recommend it in either case. If they are not synced in parallel, they WILL have problems tracking. They will fight each other for control of what voltage and current to run the array. Split the array equally and run separate wires to each charger and combine you battery banks together please.

With two PWM CCs you might get away with it, but the power distribution would not be perfectly equal.
But with two MPPT algorithms independently varying voltage and current and expecting to see only the results of their own changes, this your scenario is not likely to work.

Neither CC would be able to see the Voc end of the panel output curve.
A quick and dirty MPPT that just looks at Voc and sets the operating point at 80% of that would cause a spiral to zero voltage and both CCs would lose.

Never should you have two MPPT controllers connected to same string of panels unless the two MPPT controller functional control can be locked in synchronized unison to act as a single MPPT controller.

Without being synchronized they will just fight each other. At the least, they will just screw up each other's attempt to find MPPT point.

Some MPPT controllers do quick heavy load significantly below Vmp and another a little lower than Voc to measure two power profile slopes and project the two slopes intersection to zero in on Vmp point quickly. It is impossible for this to work if there is another parallel MPPT controller doing its own thing.

Once an MPPT controller zeros in on MPPT point it continues to wobble around a little to detect and track changing MPPT point due to illumination level and temperature. Again, another parallel MPPT controller will interfere with this tracking.

ojesymsym:
Electrical Engineers will probably be better able to advise on this one. This is a proposed design I have been considering for a while now. I am hoping it can be a way to harness unmatched solar panels using a bus bar. The idea is that multple charge controllers will share the power available, as each of their batteries get full, they will reduce their power demand and the charge controllers that require more power will then be able to get more.

Is there any reason why this cannot work?

Please post the specs of your Inverter. This might have something to do with MPPT voltage range.
I'm guessing you connected the panels in series right?

HeavenlyBang:
I did, it just draws from battery and panel output doesn't rise.

It's bizzare, since after about an hour everything suddenly went back to normal.

As for Deye, Yes it would have made it up. Not only that, I would save a lot too from cost of Cables.
But another downside of the HV is that you would need more panels to live up to expectations of the HV PV Inputs. And more panels would need more space.

swagifted:
But for energy loss sake... Would the extra 15kwh make up for the loss you would have had converting 48vdc to 220vac using the LV version as the less loss that would have happened with the HV system, cause this LV system is quite affordable compared to the HV system... And with humongous capacity, the price solarco told me for that HV battery i never recover.

During this kind of time, try to apply a load that requires more power and see if your draws that required power from your battery or from solar panels.

HeavenlyBang:
Hybrid.

Do you have external CC or your inverter is hybrid?

HeavenlyBang:
My panels are acting up.

Twice now I've noticed them completely refusing to generate more than about 300w.

Sun is out, no evident shading, my friend using solar nearby is getting enough power from his array.

Jinko 3x 580w panels, ordered from Foauni. Right now they're only making about 280w. Battery isn't even charging, since the load I have on is taking in all of that.

Tried putting on a heavy appliance to see if it'll get the panels to send more power but nope, nothing.

Of course I would go for the HV SYSTEM. Saves me from spending much on bigger cables and breakers, etc.

I actually considered a 25kw HV inverter and 61Kw HV Battery Bank.
What discouraged me was that it would mean discarding everything I currently have as inverter and Battery.

Going to put my 8kw x2, 16kw inverters and 15kw x4 batteries for sell would not cut it to acquire the HV system. Especially when people will price them down because they are used. I didn't want all that drama of convincing people that the units are in perfect conditions.

swagifted:
if you were to choose between this your current setup and another setup made up of deye, but high voltage inverter (same rating in KW) and 61.44kwh of high voltage batteries, will you still settle for this one you have now?

Your question has been forwarded to Felicity BMS and Wi-Fi department.

Waiting for response.....

compunigeria:
Morning my ogas(s) at the top. Please i need clarification.
1. Is there any simple way one can read daily energy yield/ generation ( KWH) from Felicity charge controllers ? Either from the device itself or with the use of other affordable and simple to use accessories.
2. Are there other good mppt charge controllers within the price range of felicity that can show the data?

@adrusa, @xtremeidea, @zeestone99,@ jonescosmos @others please.

Did you try to test those two fuses for continuity?

noel76:
This is the only fuse in the unit and they are intact, the unit turns on and trips off immediately

Hahahaha.
Just a few more tweaks on the way.
I'll be modifying my boxes to the attached.
For my 8kw + 8kw Parallel Setup:
Pic 1: DC Box
Pic 2: AC Box.

For my 16kw Single Unit Setup:
Pic 3: DC Box
Pic 4: AC Box

Current Limiters and Energy Meters will also be added to the AC boxes.

TechGeek777:
Money is water to some people, 75kwh is no joke, enjoy your setup bro.

Snap your MCCB and enclosure box for clearer view

They're going to be rejoined with the former 16Kw that I decommissioned back in 2022

isangjohnson:
What happened to your former batteries?

How my set up looks now.

Did your Inverter throw this F20 Tz_Dc_OverCurr_Fault Error Code?

Check from device info page and see.

Ferdiwar:
Yes mine is the SUN-5K-SG03LP1-EU model with 2 MPPTs.

The Longi string is connected to MPPT 1 while the Jinko string is connected to the MPPT 2.

Will have the installer check for leakage to the frame when he's back.

I received my 3 units of Felicity 25KW yesterday, I intend to replace my 4 Units of Felicity 15KW and use them to redeploy my redundant 16KW Deye Inverter.

I noticed some differences between these units I got and the 25KW sold in Alaba and I contacted Felicity Engineers in China straight off.

They have revealed some important points about both models. They also sent the UN38.3 of one of the Pack, waiting for the second one.

I will not post our conversation here in order not to cast their updates in Alaba and drive them to start changing stickers and writeups to circumvent the system and sell to you.

TO ALL FELICITY LITHIUM BATTERY 25KW, 15KW, and 12KW PROS{ECTIVE BUYERS in 2024 AND FUTURE, FEEL FREE TO REACH OUT FOR THIS IMPORTANT GIST BEFORE YOU BUY.

You should change the compressor ASAP (use the opportunity to change the it to r410a (good choice) or r600a (better choice) gas compressor, these are energy saver refrigerants energy saver or inverter fridges and freezers).

Reconfirm that your EARTH is still working (Might be responsible for the high consumption from the freezer because of current leaking to earth)

If your earth still works which I suspect is not, the breaker powering that freezer should break due to the surge.

Replace the breaker powering that freezer to a 3A to 5A max breaker.

durodee:
Please what could cause my freezer to start shocking? We travelled for a few days and on return I noticed that. Just a mild shock initialy but it got worse today. Only the freezer initially, now the shower shocks IF the freezer is on. Freezer content remained well preserved. I have been using the freezer actively for years (likely 4 years or more though I bought it @12 years ago) . I have tested the socket- not guilty. The freezer works BUT CONSUMES ABOUT 1.5KW/h of power rather than the usual @200w . I noticed that today.
Once I disconnected the freezer, everything becomes normal

Exactly, once you advertise anything without price, you just showed me a red flag. Pricing shouldn't be per personality or perception based on how you access the potential customer to negotiate.

SET A GENERAL BASE PRICE AND LEAVE ROOM FOR NEGOTIATIONS, ANYTHING LESS THAN THAT APPEARS LIKE A SCAM TO ME

FRESHTWANYE:
Please whenever you wan sell something dey put price, some customer will just pass on without contacting you

Please post the side sticker of your Inverter, or send the specific datasheet or model of your inverter.

From the pictures you attached your model is either SUN-3.6KSG03LP1-EU, SUN-5KSG03LP1-EU or SUN-6KSG03LP1-EU

If yes, then bolded is a confirmation that your inverter has just 2 MPPT with 1 string each and both trackers should be independent with a Max ISc of 17A each.

I hope one of your PVs is not shorted or leaking power to the frame.

Please take a look at the attached Datasheet.

Ferdiwar:
The MC4s are crimped and connected correctly.

I did some testing and discovered that only the negative of the 2 MPPTs are connected in parallel, while the positives are independent of each other.

I'll have to disconnect one of the panels pending when I resolve the issue.

Then it's possible that your MC4 connectors crimping is wrong. Before looking inside the inverter,
Make sure that the Negative Cable coming from your PV (after leaving your breakers and spd box, if any) is crimped with a Negative MC4 connector which will plug in to the Positive MC4 connector (PV-) on the body of your Inverter like wise the Positive PV Cable is crimped with a Positive MC4 connector that will then plug into the Negative MC4 connector (PV+) on the body of your Inverter.

Everything should work well after making this correction.

Ferdiwar:
Thank you Boss for this detailed explanation, I'll open the connection panel and check the connections inside as my came with the MC4 connectors, so I'll confirm how the MC4s are connected inside.

Will update you with my findings.

Take a look at my Voltages on both Inverters this morning as promised.
2x 8KW According to the MPPTs and their Strings as I outlined earlier.

Ferdiwar:
Update on my setup.

Sometime last month I connected all my AC to the smart load of my inverter, and noticed that the inverter was going off and on repeatedly for like 5x before stabilizing back on. This would happen severely in a day before the sun goes down as I discovered it only happens during the day.

As a result I reverted back to the previous connection and disabled the smart load thinking that was my issue, but it still persisted, so I did some reading online and concluded it might be a software bug.

I emailed Deye and requested for diagnosis and update which they did by pushing a remote firmware update to the inverter, yet the issue continued (in my mind I was like I spent huge money to buy a faulty batch of an expensive inverter). I sent an update email yesterday to Deye explaining that the issue is not yet resolved (yet to get an update though) after it happened for the 2nd time in the morning (around 11am). At this point I thought it wise to calm down and observe the inverter when next it happens rather than be angry, so I stayed put in front of the inverter and watched it.

Few minutes later it happened again this time around I was watching the screen and boom I caught it in the act and it happens to be that the voltages of 2 strings of panels attached to the 2 MPPTs of the inverter exceeded the max 500v of the inverter (string 1 5x Longi 570w panels was pumping 240v+ as at that time while string 2 5x Jinko 625w panels were pushing over 265v both exceeding the 500v max voltage).

As I saw that I quickly switched off string 1 breaker and the inverter stabilized instantly which suggests that the input of the 2 MPPTs are somehow connected in series or something like that as one of the MPPTs can take 500v alone but the 2 MPPTs combined together is still 500v.

No matter what you do, do not exceed the max voltage of your inverter and take not of the tolerance of the VOC of your panels when connecting your panels to your CC or inverter to avoid stories just in case your inverter or CC is not equipped to handle any form voltage spike above the rated max voltage of the inverter or CC.


@Jonescosmos the 500v is for the 2 MPPTs after all

I have never had this kind of issues bro.
Please note that the MPPTs are not connected in series, rather they are connected in parallel with some internal diodes that prevents each string from back feeding to the other.

I have 4 Strings so far are as follows:

LATEST DEYE 8KW + 8KW:
INVERTER 1 MPPT 1:
STRING 1: 8X600W CANADIAN SOLAR PANELS (STC 41.3 V x 8 = 330.4V)(NOTC 34.9 V x8 = 279.2V)
STRING 2: 8X600W CANADIAN SOLAR PANELS (STC 41.3 V x 8 = 330.4V)(NOTC 34.9 V x8 = 279.2V)
INVERTER 2 MPPT 2:
STRING 1: 8X625W JINKO SOLAR PANELS (STC 55.70V V x 8 = 445.6V)(NOTC 42.61V V x8 = 340.88V)
STRING 2: 10X540W FELICITY SOLAR PANELS (STC 49.55 V x 10 = 495.5V)(NOTC 42.24 V x10 = 422.4V)

PREVIOUS DEYE 8KW:
MPPT 1:
STRING 1: 8X600W CANADIAN SOLAR PANELS (STC 41.3 V x 8 = 330.4V)(NOTC 34.9 V x8 = 279.2V)
STRING 2: 8X600W CANADIAN SOLAR PANELS (STC 41.3 V x 8 = 330.4V)(NOTC 34.9 V x8 = 279.2V)
MPPT 2:
STRING 1: 8X625W JINKO SOLAR PANELS (STC 55.70V V x 8 = 445.6V)(NOTC 42.61V V x8 = 340.88V)
STRING 2: 10X540W FELICITY SOLAR PANELS (STC 49.55 V x 10 = 495.5V)(NOTC 42.24 V x10 = 422.4V)

PREVIOUS DEYE 16kw:
MPPT 1:
STRING 1: 8X600W CANADIAN SOLAR PANELS (STC 41.3 V x 8 = 330.4V)(NOTC 34.9 V x8 = 279.2V)
STRING 2: 8X600W CANADIAN SOLAR PANELS (STC 41.3 V x 8 = 330.4V)(NOTC 34.9 V x8 = 279.2V)
MPPT 2:
STRING 1: 8X625W JINKO SOLAR PANELS (STC 55.70V V x 8 = 445.6V)(NOTC 42.61V V x8 = 340.88V)
MPPT 3:
STRING 2: 10X540W FELICITY SOLAR PANELS (STC 49.55 V x 10 = 495.5V)(NOTC 42.24 V x10 = 422.4V)

My systems worked flawlessly on Deye 16KW, Deye 8KW, and Parallel Deye 8KW + 8KW as well as every other installations I have done, even non Deye Inverters.
I will post you a picture of my Voltages tomorrow afternoon.

I still believe you should investigate further as there might be a problem with your Panel Strings or your connection on the terminals inside the Inverter. I have seen cases were people misinterpreted the terminals. Please take a good look at the attached pictures.
Note that Positive from String 1 and Positive from String 2 are next to each other (Parallel) and Negative From String 1 and Negative from String 2 are next to each other likewise (parallel).
The issue you experienced is only possible when you connect Positive and Negative of same string next to each other.


EACH MPPT AND STRING HAS IT'S OWN VOC, WHICH IS 500V
SO YOU HAVE:
16KW
MPPT1 STRING 1 VOC=500V
MPPT1 STRING 2 VOC=500V
MPPT2 STRING 1 VOC=500V
MPPT2 STRING 2 VOC=500V
MPPT3 STRING 1 VOC=500V
MPPT3 STRING 2 VOC=500V

8KW / 5KW
MPPT1 STRING 1 VOC=500V
MPPT1 STRING 2 VOC=500V
MPPT2 STRING 1 VOC=500V
MPPT2 STRING 2 VOC=500V

My Most recent project:
50KW
MPPT1 STRING 1 VOC=1000V
MPPT1 STRING 2 VOC=1000V
MPPT2 STRING 1 VOC=1000V
MPPT2 STRING 2 VOC=1000V
MPPT3 STRING 1 VOC=1000V
MPPT3 STRING 2 VOC=1000V
MPPT4 STRING 1 VOC=1000V
MPPT4 STRING 2 VOC=1000V

Ferdiwar:
Update on my setup.

Sometime last month I connected all my AC to the smart load of my inverter, and noticed that the inverter was going off and on repeatedly for like 5x before stabilizing back on. This would happen severely in a day before the sun goes down as I discovered it only happens during the day.

As a result I reverted back to the previous connection and disabled the smart load thinking that was my issue, but it still persisted, so I did some reading online and concluded it might be a software bug.

I emailed Deye and requested for diagnosis and update which they did by pushing a remote firmware update to the inverter, yet the issue continued (in my mind I was like I spent huge money to buy a faulty batch of an expensive inverter). I sent an update email yesterday to Deye explaining that the issue is not yet resolved (yet to get an update though) after it happened for the 2nd time in the morning (around 11am). At this point I thought it wise to calm down and observe the inverter when next it happens rather than be angry, so I stayed put in front of the inverter and watched it.

Few minutes later it happened again this time around I was watching the screen and boom I caught it in the act and it happens to be that the voltages of 2 strings of panels attached to the 2 MPPTs of the inverter exceeded the max 500v of the inverter (string 1 5x Longi 570w panels was pumping 240v+ as at that time while string 2 5x Jinko 625w panels were pushing over 265v both exceeding the 500v max voltage).

As I saw that I quickly switched off string 1 breaker and the inverter stabilized instantly which suggests that the input of the 2 MPPTs are somehow connected in series or something like that as one of the MPPTs can take 500v alone but the 2 MPPTs combined together is still 500v.

No matter what you do, do not exceed the max voltage of your inverter and take not of the tolerance of the VOC of your panels when connecting your panels to your CC or inverter to avoid stories just in case your inverter or CC is not equipped to handle any form voltage spike above the rated max voltage of the inverter or CC.


@Jonescosmos the 500v is for the 2 MPPTs after all

I honestly missed understood the slang, poor me

Obnoxious2001:
.
No be everybody be area

Hahahaha, my bad.

Juror:
You took the 'plug' literally

Oh wow, Naija people and their vocabs, HE SHOULD CONTACT TECHLAND in that case, that's my "plug".

Dam5reey1:
Boss, you don go reply like AI.

a Plug in Naija and context of the question mean connect or Source,better still where he can get quality Canadian solar panel.

Contact Fidelis @ Felicity 08029142078

Edrizz:
Please do you have the contact of their major dealer in Nigeria..... some vendors that advertise on this thread are too temperamental to deal with, some shout n yell at a potential client on phone as if they are forced to open a shop

The Original Canadian Solar Panels are equipped with T4 or MC4-Evo2 connectors.
The T4/MC4 Evo2 is designed to handle higher voltage/amperage module ratings than the conventional MC4 and I tried coupling the both some years back and they didn't mate when you plug them together.
So you might have to hold your sample in hand before buying the particular T4/MC4-Evo2 that you seek.

Nutridelfarms:
Hello, please do you have a plug for original canada solar panel?

People ended up buying Lithium Batteries from random places at a too good to be through prices.

I personally discovered that some sellers harvest cells and replace with lesser capacity cells (I kid you not, fear Alaba Market People)
We often times look at China as a major source of fake products. Truth is, those guys actually have Quality Control Department that works. But our people will always find a way to infiltrate facilities.

Any Felicity Product you see with Internal defects or cell mismatch and etc must have been tampered after it left factory.

I can show you my chats with Felicity Engineers, where they give a go ahead to open up a product and show them what I found inside and through that most times they have confirmed to me genuine components and fakes.

See this new 25KW that was recently brought into the market, I have made verification from Felicity about the cells and they said its packaged with REPT Cells and this particular 500A Grade A >8000 cycle cell is not yet in the market because REPT must satisfy OEM factories contracts before selling to open markets, let's wait a few months and see what cells you will see from the Alaba Market Sources.

Try to visit Felicity service centers you will understand better.

When buying felicity products, buy from them directly, e get why

isangjohnson:
I think his findings here were centered on the type/quality of cells used by Felicity and not the connection as perceived.
Actually, there have been negative reviews about some of its batteries and I've seen some interior pictures of LPBF model of its 15kwh battery bank.
Apart from the poor performance of the cells not measuring up to the advertised standard, the owner also complained about the quality
of cells used as he was carrying out physical assessment.
However, there were positive reviews about the LPBA model, except one person that complained about its bms not allowing full charge.

I have no complaints what so ever.
I will do a take apart video soon to disclose what cells and other components are inside those beasts of batteries.

People who have complaints probably did wrong installations or didn't buy genuine felicity products.

TCD:
Chief what's your experience so far with your felicity lithium batteries? Do you recommend? I'm reading alot of complaints

FOUANI for Jinko, Techland (Lagos, they can send to you anywhere at a cost though) for Canadian Solar, Talk to me if you need Longi Panels.

compunigeria:
Please are there ways of knowing fake Canadian solar panels?

Installers/ end users around Kaduna axis, please i need recommendations on shops where one can get JINKO panels or original Canadian solar panels or JA solar. I have tried several shops but no luck.


Abeg Abuja and Kano people kindly recommend trusted sources too.
@jonescosmos and other big ogas.