On 2023/03/23 at 12:57 PM, PieterO said:

Hi All, yes same with mine, they did update the BMS on my 2 CFE5100 s and now it cycles between 100% and 95%. This is not ideal as the other Makes of Batteries stays at 100% and almost always when the sun set, I start my battery with 95% SoC.  The CFE Technical team says it's an Inverter issue... Thus, I am working with Sunsynk/Dye Technical to see if they can resolve this for us. 

 

Its not our inverters. Its the CFE Batteries. How is it possible that we all have the same problem with CFE Batteries but different inveters. 

1 hour ago, Ferdi. said:

PLEASE STAY AWAY FROM CFE! 
 

Read trough the whole tread from page one. Its problem on problem. Support just don’t give a shit! They create groups  yes but only you and the 4 technicians to keep it quiet. My Batteries are not even 3 months old and im having endless problems. First it was the ios app. Still not working to bind batteries btw. Had to use a friends android phone to do it as Support doesn’t understand why it doesn’t work. My Batteries first dropped from 20% to 1% with a load of between 300w to 400w. Next it was 25% to 1% with the same load. This morning i was woken up by my cpap machine that was off and when i had a look its now cutting off at 26%. Yes they claim there is firmware updates to fix the issue and the one technician (Leon) said my firmware is up to date but why did it happen again🤷🏻‍♂️ Some claim it might be a bad batch of batteries. I now say its CFE company that’s making crap Batteries and now they can’t keep up with support and or don’t know what shit excuse to come up next as they are running out of excuses. 
 

In Afrikaans we have a saying “ goedkoop koop is duur koop”

Yes these Batteries aren’t cheap but we all try to save 1k here and there or are being taken for a ass by installers/ solar shops.

Its time to name and shame to get this shit products out of rotation in SA. 
 

I'm going to demand a full refund for my Batteries and will rather pay in on a much better brand. 
 

My number is (083) 645-4794 

email: [email protected]

Please make contact with me to stand together and get our hard earned money back for the products we payed for but is not performing as promised. 

Add Raystech to the list as well.

3 hours ago, Ferdi. said:

PLEASE STAY AWAY FROM CFE! 
 

Read trough the whole tread from page one. Its problem on problem. Support just don’t give a shit! They create groups  yes but only you and the 4 technicians to keep it quiet. My Batteries are not even 3 months old and im having endless problems. First it was the ios app. Still not working to bind batteries btw. Had to use a friends android phone to do it as Support doesn’t understand why it doesn’t work. My Batteries first dropped from 20% to 1% with a load of between 300w to 400w. Next it was 25% to 1% with the same load. This morning i was woken up by my cpap machine that was off and when i had a look its now cutting off at 26%. Yes they claim there is firmware updates to fix the issue and the one technician (Leon) said my firmware is up to date but why did it happen again🤷🏻‍♂️ Some claim it might be a bad batch of batteries. I now say its CFE company that’s making crap Batteries and now they can’t keep up with support and or don’t know what shit excuse to come up next as they are running out of excuses. 
 

In Afrikaans we have a saying “ goedkoop koop is duur koop”

Yes these Batteries aren’t cheap but we all try to save 1k here and there or are being taken for a ass by installers/ solar shops.

Its time to name and shame to get this shit products out of rotation in SA. 
 

I'm going to demand a full refund for my Batteries and will rather pay in on a much better brand. 
 

My number is (083) 645-4794 

email: [email protected]

Please make contact with me to stand together and get our hard earned money back for the products we payed for but is not performing as promised. 

I support this as well. My batteries installed a month ago. I had problems from the word go and supplier is giving me a run around. In sort my issues:

1. Struggled endlessly to get batteries on app and updated by Leon in China

2. SOC of batteries differ on app
3. Inverter only seems to communicate with one battery

4. SOC drops from 100 to 0 under no load at all creating alarms on my 8kv SS

5. Batteries don't keep its SOC

6. During the day with full PV battery is feeding load - even if my mode settings should prevent it

7. No technical support from supplier of CFE - I was put in a whatsap technical group with no support at all

 

How do we make our concerns going global as many other potential end users may fall in the same trap?

I have also been looking for answers regarding the soc 100 -> 90 drop and have the following feedback to add.

My setup: Deye 5kw, CFE 5100s, no pv's

My installation is one week old, the first 4 days my soc dropped from 100 to 90, three cycles per day. See the charts that I collected from the Deye iCloud dashboard.

 

 

The past 3 days the behavior has changed from 100 to 95 in short intervals. This was without any firmware updates.

 

Im starting to think this is the normal maintenance behavior of the CFE bms. Everything else is working exactly as expected without any issues or errors.

 

Also for the guys struggling with the Battery wifi, this vid helped alot.

 

 

 

2 hours ago, MeepMoop said:

Add Raystech to the list as well.

Thank you i will add it. Did you have it installed together with your system by an installer or did you just add it yourself. Why im asking is we need to name and shame the installers and also the companies we bought it from. They will quickly put pressure on CFE or even stop to import their products as it gives them a bad name as well. 

58 minutes ago, Flappie said:

I support this as well. My batteries installed a month ago. I had problems from the word go and supplier is giving me a run around. In sort my issues:

1. Struggled endlessly to get batteries on app and updated by Leon in China

2. SOC of batteries differ on app
3. Inverter only seems to communicate with one battery

4. SOC drops from 100 to 0 under no load at all creating alarms on my 8kv SS

5. Batteries don't keep its SOC

6. During the day with full PV battery is feeding load - even if my mode settings should prevent it

7. No technical support from supplier of CFE - I was put in a whatsap technical group with no support at all

 

How do we make our concerns going global as many other potential end users may fall in the same trap?

Did you have it installed together with your system by an installer or did you just add it yourself. Why im asking is we need to name and shame the installers and also the companies we bought it from. They will quickly put pressure on CFE or even stop to import their products as it gives them a bad name as well. 

10 minutes ago, Nimitz said:

I have also been looking for answers regarding the soc 100 -> 90 drop and have the following feedback to add.

My setup: Deye 5kw, CFE 5100s, no pv's

My installation is one week old, the first 4 days my soc dropped from 100 to 90, three cycles per day. See the charts that I collected from the Deye iCloud dashboard.

 

 

The past 3 days the behavior has changed from 100 to 95 in short intervals. This was without any firmware updates.

 

Im starting to think this is the normal maintenance behavior of the CFE bms. Everything else is working exactly as expected without any issues or errors.

 

Also for the guys struggling with the Battery wifi, this vid helped alot.

 

 

 

Im no expert but if your b2AC (back 2 AC) is not set to 90 or 95 then it is the BMS that means its the battery. 
 

If your system is set that it only uses battery at night and will only allow grid to supply power if battery is 10% or less then in my opinion there is something seriously wrong. 
 

Thank you for the video but its no help if you have a iOS device. Everything goes smooth until you have to “confirm” to bind the battery. Then you are stuck there and you feel like you can tap that confirm button right through you phone but still no joy. Like previously stated in the thread i had to use a android phone and i got it added. 
 

 

Please each and everyone who reads this and feel that they got no joy, please name the company who you bought it from or installer that installed your system so that we can name and shame. 
 

I’d like to think that we all work hard in order to buy solar products. Some of us (like me) have to save up to buy the next ad on to the system and some have taken out a loan, second bond etc. It doesn’t matter if you payed cash or still paying it off. Everyone got their money and now you are sitting with a bigger headache. 
 

This needs to end! 

2 hours ago, Ferdi. said:

Im no expert but if your b2AC (back 2 AC) is not set to 90 or 95 then it is the BMS that means its the battery. 
 

If your system is set that it only uses battery at night and will only allow grid to supply power if battery is 10% or less then in my opinion there is something seriously wrong. 
 

Thank you for the video but its no help if you have a iOS device. Everything goes smooth until you have to “confirm” to bind the battery. Then you are stuck there and you feel like you can tap that confirm button right through you phone but still no joy. Like previously stated in the thread i had to use a android phone and i got it added. 
 

 

No, I do not have any limitations set on when to use or charge the battery.

1 hour ago, Nimitz said:

No, I do not have any limitations set on when to use or charge the battery.

Try to set your b2AC to 10% and if you are using solar first, battery second and utility third setting then set your AC2b to 100%
 

When the battery is fully charged (100%) your inverter load will drain the battery to 10% before using utility again. 
 

Please let me know if it worked. 

I have created a bad service delivery group for solar related products on Facebook so that we can MAKE them listen to us. Please join this page so that we can get our solar issues sorted out ASAP. Looking forward to see you all there. https://m.facebook.com/groups/612338337069979/?ref=share&mibextid=S66gvF

1 hour ago, Ferdi. said:

Try to set your b2AC to 10% and if you are using solar first, battery second and utility third setting then set your AC2b to 100%
 

When the battery is fully charged (100%) your inverter load will drain the battery to 10% before using utility again. 
 

Please let me know if it worked. 

Thank, but I do not have solar, only battery and inverter.

16 hours ago, Ferdi. said:

Thank you i will add it. Did you have it installed together with your system by an installer or did you just add it yourself. Why im asking is we need to name and shame the installers and also the companies we bought it from. They will quickly put pressure on CFE or even stop to import their products as it gives them a bad name as well. 

Installer, but they have been helpful enough IMO and are not selling those batteries anymore after a few customers not being happy with the performance

@Ferdi. How are we going to get our money back?  These batteries have been approved by Sunsynk. Other than the cycling between 95% and 100% with PV (which according to some experts is a good thing) and the poor technical support I don’t have any issues with mine.  So i believe some of us will be stuck with them as we cannot proof to the installers that anything is wrong with them. 

On 2023/03/27 at 8:55 AM, PieterO said:

@Ferdi. How are we going to get our money back?  These batteries have been approved by Sunsynk. Other than the cycling between 95% and 100% with PV (which according to some experts is a good thing) and the poor technical support I don’t have any issues with mine.  So i believe some of us will be stuck with them as we cannot proof to the installers that anything is wrong with them. 

How's your system doing now? I hear CFE did updates 

Hi @Ferdi.  No change - still cycling between 100% and 95%.  When did they do the updates?  Is your system now sorted now?

@PieterO, have you spoken to Leon? He can update the firmware over the air. 
 

I desperately want to say yes my system is sorted but i will know in a week or 2’s time. They replaced my batteries yesterday. 

@Ferdi. thanks for letting me know. I will speak to him. Let me know after 2 weeks?

Hello,

My first time on this forum... anyway I have CFE-5100 + Growatt SPF5000 and my battery is also cycling between 90%-100% but that's OK, because I know that keeping battery at 100% all the time will shoten the lifetime. What I don't like is that when I discharge the battery during the night from 100% to 30% I only get around 2.1kWh (measured by Growatt) of energy out of battery... Now according to the specs usable capacity should be 4.5kWh and 70% => 3.1kWh.

I'm not sure where the problem is. Is it a CFE-5100 BMS power/energy measurent wrong or Growatt discharge measurement wrong?

Did anyone of you notice something simular?

 

13 hours ago, Patrik said:

Hello,

My first time on this forum... anyway I have CFE-5100 + Growatt SPF5000 and my battery is also cycling between 90%-100% but that's OK, because I know that keeping battery at 100% all the time will shoten the lifetime. What I don't like is that when I discharge the battery during the night from 100% to 30% I only get around 2.1kWh (measured by Growatt) of energy out of battery... Now according to the specs usable capacity should be 4.5kWh and 70% => 3.1kWh.

I'm not sure where the problem is. Is it a CFE-5100 BMS power/energy measurent wrong or Growatt discharge measurement wrong?

Did anyone of you notice something simular?

 

I've never considered comparing the SoC drop vs reported kWh until now. So this morning I had a look. 

2x 5100S batteries, 10.2 kWh capacity.

Timeframe: 12am to 5am

SoC went from 70% to 56%

kWh used in time frame was 0.3 per hour x 5 hours, so 1.5kWh total. 

14% of 10.2 is roughly 1.45kWh. so the SoC drop matches the kWh consumed.

 

 

 

 

 

 

 

I get between 8.5 kWh and 9 kWh discharge daily on 2 batteries and I take my batteries down to 20% so in essence I still have 10% left as the batteries have a DoD of 90%. So no issues for me on capacity. @Patrick i am sure that it is a inverter mis read

2 hours ago, PieterO said:

I get between 8.5 kWh and 9 kWh discharge daily on 2 batteries and I take my batteries down to 20% so in essence I still have 10% left as the batteries have a DoD of 90%. So no issues for me on capacity. @Patrick i am sure that it is a inverter mis read

Howzit @PieterO - mine has been functioning well since they updated about 1.5 months ago, but today I had a very weird issue - I limit by battery discharge to 25% for the morning, to handle load shedding and the inverter (Deye) is set to shut down at <15% SOC. This morning, my geyser went on and it pulled from grid as normal, and then the battery discharged instantly to 1% and started charging from the grid... you seen something like that?

@GrantCPT Unfortuntaly no I havent experienced this before, maybe someone else on this forum did?

4 minutes ago, PieterO said:

@GrantCPT Unfortuntaly no I havent experienced this before, maybe someone else on this forum did?

OK thanks @PieterO - I've asked our friend Leon to look, but that dude is proper busy... @MeepMoop did you have a problem like this?

@GrantCPT Yes, with my first batch, I had a case of 51% -> 1% during load shedding - the difference being that one of my 2 batteries then refused to charge entirely and got stuck in an on off loop.

Here's the thread I made about it, with the resolution - Spoiler - they were replaced. 
 

 

Edited March 31, 20233 yr by MeepMoop
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