Neey 10A balancer red LED flashing?

Lt.Dan · Dec 31, 2023

AshleyL said:
Nay, my Neey 10A is one of the new model which doesn't have the last pin B+ if you check the picture link at my first post.

Neey 10A active balancer help needed on wiring (No B+ pin? New model maybe?)

My Neey 10A active balancer finally arrived just now. To my surprise, this model doesn't have B+ pin after B24. How do I install this particular Neey 10A balancer on my 16S Lifepo4 pack? I understand that B- is connected to first negative and B01 - B16 will be connected to positive side of cell...

diysolarforum.com

It still uses the last pin on main cell positives though, right?

AshleyL · Dec 31, 2023

Lt.Dan said:
Neey 10A active balancer help needed on wiring (No B+ pin? New model maybe?)

My Neey 10A active balancer finally arrived just now. To my surprise, this model doesn't have B+ pin after B24. How do I install this particular Neey 10A balancer on my 16S Lifepo4 pack? I understand that B- is connected to first negative and B01 - B16 will be connected to positive side of cell...

diysolarforum.com

It still uses the last pin on main cell positives though, right?

Nope, I am using 16s cells. The pin B24 is not connected to 16th main cell positive.

Lt.Dan · Dec 31, 2023

AshleyL said:
Nope, I am using 16s cells. The pin B24 is not connected to 16th main cell positive.

Gotcha, I understand now

Daddy Tanuki · Dec 31, 2023

Lt.Dan said:
Gotcha, I understand now

Now I am lost Lt Dan! I got bit in the ass!

AshleyL · Feb 2, 2024

Darn it. The 10A balancer beeping and red LED flashing non-stop again.

Based on the indicator status I found, the red flashing means "resistance of the equalizing line is too large".
Checked each Lifepo4 cell internal resistance, all around 0.18ohm.
Checked the wiring harness resistance, all wires fine 0.01ohm.
What exactly is wrong with the balancer. One day it works, another day it doesn't.

Any idea guys?

BartSolar · May 13, 2024

AshleyL said:
Darn it. The 10A balancer beeping and red LED flashing non-stop again.

View attachment 192809

Based on the indicator status I found, the red flashing means "resistance of the equalizing line is too large".
Checked each Lifepo4 cell internal resistance, all around 0.18ohm.
Checked the wiring harness resistance, all wires fine 0.01ohm.
What exactly is wrong with the balancer. One day it works, another day it doesn't.

Any idea guys?

Hello Ashley,

I've had the same problem with this balancer: a fairly new device and sometimes it would stop working altogether. When I restarted the box it worked fine (green lamp + blue lamp), but when I connect via the Bluetooth it starts beeping and red LED. I have tried many things and now seem to have it under control for at least a few days and 3 rounds of full charge with balance. I had contacted the supplier who gave some tips, but it seems to me that the voltage is too high when the pack is fully loaded.

My steps:
- make sure your phone doesn't reconnect (passively/in the background) to the Neey (close app, I had connections from 2 competing phones).
- now discharge the battery as with normal use, I stopped discharging at about 60% capacity (of a 48V pack).
- Now disconnect (2 connectors) the Neey from the battery and leave it disconnected overnight.
- adjust maximum voltage of your battery to 55.2Volt. I was still working on the occasional top balance at 56.8V, there seems to be a problem there, apparently there is a maximum voltage of the pack that the Neey accepts.
- connect the Neey to the pack again (first cable harness 2 (cells 9 to 16) and only then cable harness 1 (- pole + cell 1 to 8), the Neey will then start up
- connect to the app (Enerkey) and look at the settings.

Since I did this, no more errors. I have asked the supplier for specifications of the Neey regarding max pack voltage etc because I still want to be able to do a top balance (occasionally) at 56.8V.

Good luck, Bart

AshleyL · May 13, 2024

BartSolar said:
Hello Ashley,

I've had the same problem with this balancer: a fairly new device and sometimes it would stop working altogether. When I restarted the box it worked fine (green lamp + blue lamp), but when I connect via the Bluetooth it starts beeping and red LED. I have tried many things and now seem to have it under control for at least a few days and 3 rounds of full charge with balance. I had contacted the supplier who gave some tips, but it seems to me that the voltage is too high when the pack is fully loaded.

My steps:
- make sure your phone doesn't reconnect (passively/in the background) to the Neey (close app, I had connections from 2 competing phones).
- now discharge the battery as with normal use, I stopped discharging at about 60% capacity (of a 48V pack).
- Now disconnect (2 connectors) the Neey from the battery and leave it disconnected overnight.
- adjust maximum voltage of your battery to 55.2Volt. I was still working on the occasional top balance at 56.8V, there seems to be a problem there, apparently there is a maximum voltage of the pack that the Neey accepts.
- connect the Neey to the pack again (first cable harness 2 (cells 9 to 16) and only then cable harness 1 (- pole + cell 1 to 8), the Neey will then start up
- connect to the app (Enerkey) and look at the settings.

Since I did this, no more errors. I have asked the supplier for specifications of the Neey regarding max pack voltage etc because I still want to be able to do a top balance (occasionally) at 56.8V.

Good luck, Bart

That weird, my charging voltage is only 55.2V (16cells). The only way to get it working is to let it NEEY unconnected for few days as if waiting for the supercapacitor charge to run out. Yet, the same beeping issue still happen after few days of usage.

I bought another 10A balancer from other supplier (Enerkey) and there is no issue after continuous usage from February 2024 until now.

For experiment sake for the problematic Neey 10A, last week I plugged it into my new BatteroTech pack and guess what, after running well for 4 days, it beeping again....sigh.......

BartSolar · May 13, 2024

AshleyL said:
That weird, my charging voltage is only 55.2V (16cells). The only way to get it working is to let it NEEY unconnected for few days as if waiting for the supercapacitor charge to run out. Yet, the same beeping issue still happen after few days of usage.

I bought another 10A balancer from other supplier (Enerkey) and there is no issue after continuous usage from February 2024 until now.

For experiment sake for the problematic Neey 10A, last week I plugged it into my new BatteroTech pack and guess what, after running well for 4 days, it beeping again....sigh.......

That's a shame, I hope it continues to work for me now.

I have also noticed that sometimes the Neey seems to 'reset' and sometimes not, it seems like errors in the boot process remain cached.

I also made an intermediate step once by first connecting 1 harness and configuring an 8P battery, then the Neey started up. I also worked for a while with 'only' 5A level instead of 10A. Against all knowledge

It's just really bad that it works so unreliably for something that just needs to run stable. I also had the plan to buy another brand, but I'm a bit afraid that this is 1 manufacturer that supplies them white-labeled to all parties.

Without doubting you

Are you sure that the pack is actually at 55.2V and a charger not accidentally charges it to a higher voltage?

AshleyL · May 13, 2024

BartSolar said:
That's a shame, I hope it continues to work for me now.

I have also noticed that sometimes the Neey seems to 'reset' and sometimes not, it seems like errors in the boot process remain cached.

I also made an intermediate step once by first connecting 1 harness and configuring an 8P battery, then the Neey started up. I also worked for a while with 'only' 5A level instead of 10A. Against all knowledge

It's just really bad that it works so unreliably for something that just needs to run stable. I also had the plan to buy another brand, but I'm a bit afraid that this is 1 manufacturer that supplies them white-labeled to all parties.

Without doubting you Are you sure that the pack is actually at 55.2V and a charger not accidentally charges it to a higher voltage?

Yes, tried with Growatt SPF5000ES (Sinopoly) and SPF6000ES (Batterotech).
3 different multimeters = measured the voltage at pack terminal too as requested by so called seller/technician.
Same issue where NEEY 10A will beeping and flashing red light out of nowhere after few days of usage.
The only way to "reset" the balancer is to let it unconnected for few days so the internal supercapacitors will be discharged. Then the balancer can be used normally again......before the same issue happens again after few days.

I believe there are certain faulty batches in circulation here.

JD63 · May 23, 2024

BartSolar said:
Hello Ashley,

I've had the same problem with this balancer: a fairly new device and sometimes it would stop working altogether. When I restarted the box it worked fine (green lamp + blue lamp), but when I connect via the Bluetooth it starts beeping and red LED. I have tried many things and now seem to have it under control for at least a few days and 3 rounds of full charge with balance. I had contacted the supplier who gave some tips, but it seems to me that the voltage is too high when the pack is fully loaded.

My steps:
- make sure your phone doesn't reconnect (passively/in the background) to the Neey (close app, I had connections from 2 competing phones).
- now discharge the battery as with normal use, I stopped discharging at about 60% capacity (of a 48V pack).
- Now disconnect (2 connectors) the Neey from the battery and leave it disconnected overnight.
- adjust maximum voltage of your battery to 55.2Volt. I was still working on the occasional top balance at 56.8V, there seems to be a problem there, apparently there is a maximum voltage of the pack that the Neey accepts.
- connect the Neey to the pack again (first cable harness 2 (cells 9 to 16) and only then cable harness 1 (- pole + cell 1 to 8), the Neey will then start up
- connect to the app (Enerkey) and look at the settings.

Since I did this, no more errors. I have asked the supplier for specifications of the Neey regarding max pack voltage etc because I still want to be able to do a top balance (occasionally) at 56.8V.

Good luck, Bart

Hi, I am having the same problem. I managed to get device going after initial 5 days use, by discharging internal caps. It has stopped again, so will try that trick again tomorrow.
When bluetooth connects, blue light goes hard on, 2-3 seconds later, fault led (red) begins flashing.

AshleyL · May 23, 2024

JD63 said:
Hi, I am having the same problem. I managed to get device going after initial 5 days use, by discharging internal caps. It has stopped again, so will try that trick again tomorrow.
When bluetooth connects, blue light goes hard on, 2-3 seconds later, fault led (red) begins flashing.

Well, I open the balancer and discharge all supercapacitors manually to save time.

JD63 · May 23, 2024

AshleyL said:
Well, I open the balancer and discharge all supercapacitors manually to save time.

Thanks. Yes, that is what I am planning to do tomorrow.

Update: used 2.5 ohm resistor to drop the 4 capacitors down to 2.6v (tried to get balancer working at 3v, but no luck) and it connected via bluetooth, and did balance job this afternoon. The caps were sitting at 3.25v this morning before discharging them, I see their nameplate rating is 2.7v.

AshleyL · May 23, 2024

JD63 said:
Thanks. Yes, that is what I am planning to do tomorrow.

I guess three of us got faulty batch of the active balancer......sigh.....It is annoying to wait or manually discharge the internal supercapacitors.

Daddy Tanuki · May 23, 2024

AshleyL said:
I guess three of us got faulty batch of the active balancer......sigh.....It is annoying to wait or manually discharge the internal supercapacitors.

pretty sure I got four of them that are garbage, thats why lately I have stopped watching off grid garage and a few other youtube channels.. there is money flowing from one account to another, all the reason to not trust the players involved.

BartSolar · May 23, 2024

My balancer is also off again

Worked fine till I restarted the balancer by inserting the external powerplug (as a test).
What is a safe way to discharge these capacitors ?

Does any of you know if the balancer, once initiated and running, will balance in case the capacitors would cause the problem?
I.o.w. if I set it to run and do not connect by bluetooth would it work? I have had many days it seemed to work, but recently only clouds so pack has not come to balance start vol. If so, I set it to the parameters needed, set balance to On and could let it go...

AshleyL · May 24, 2024

BartSolar said:
My balancer is also off again Worked fine till I restarted the balancer by inserting the external powerplug (as a test).
What is a safe way to discharge these capacitors ?

Does any of you know if the balancer, once initiated and running, will balance in case the capacitors would cause the problem?
I.o.w. if I set it to run and do not connect by bluetooth would it work? I have had many days it seemed to work, but recently only clouds so pack has not come to balance start vol. If so, I set it to the parameters needed, set balance to On and could let it go...

I do not understand your question.
If the balancer is turned on via app + bluetooth, it will stay active and start balancing based on your parameters unless if you disconnect the balancer.

BartSolar · May 24, 2024

AshleyL said:
I do not understand your question.
If the balancer is turned on via app + bluetooth, it will stay active and start balancing based on your parameters unless if you disconnect the balancer.

What I meant was that IF the caps are even above 2.7V (mine were 3.02V) and I would not have restarted the device, would the balancing have continued. I wonder.

Meanwhile I have opened my device and started measuring...

First impression / found out that all 4 caps rise in about 10 minutes 0.005V (even) when the device is in 'standby' / 'program complete' mode and battery is discharging ? That might explain that the caps in time over time get over 2.7V

Also found out that:
- caps at 2.7V -> device is/stays in error
- caps at 2.65V -> device starts/works normal
- 'over-voltage' above 2.5V in the caps is dumped (to the cell's ?) as soon as the device is started, even without balancing

So possibly: if not every day your device balances (mine doesn't), the voltage in the caps builds up and doesn't get offloaded/dumped.
When you than connect with BT to the device (or this is done by the phone in the background), the parameters are re-evalued to be loaded to the device, resulting in the red LED + beeping?

I'll continue looking/measuring.

Bart

BTW: discharging with lightbulb of head light of car (12V 55W) works fine, no sparks.

AshleyL · May 24, 2024

BartSolar said:
What I meant was that IF the caps are even above 2.7V (mine were 3.02V) and I would not have restarted the device, would the balancing have continued. I wonder.

Meanwhile I have opened my device and started measuring...

First impression / found out that in 10 minutes all 4 caps rise 0.005V (even) when the device is in 'standby' / 'program complete' mode and battery is discharging. That might explain that the caps in the device over time get over 2.7V

Also found out that:
- caps at 2.7V -> device is/stays in error
- caps at 2.65V -> device starts/works normal
- 'over-voltage' above 2.5V in the caps is dumped (to the cell's ?) as soon as the device is started, even without balancing

So possibly: if not every day your device balances (mine doesn't), the voltage in the caps builds up and doesn't get offloaded/dumped.
When you than connect with BT to the device (or this is done the phone in the background), the parameters are re-evalued to be loaded to the device, resulting in the red LED + beeping?

I'll continue looking/measring.

Bart

CORRECT. That is exactly what happening. I thought I was the only one who measured these voltages and noticed this pattern.
If the balancer doesn't start balancing due to lack of sun or heavy usage of the battery for few days (around 3 - 5 days), it will start beeping and flashing red the moment the trigger start voltage is reached.
Bluetooth connection is not required. I turned on the balancing via the app at start voltage 3.45v and leave it be. The beeping + flashing will happens after days of inactivity due to insufficient start voltage (lack of sun or heavy usage). If it is balancing at least once every day, the Neey 10A will not beep/flashing red.

Strange part, it doesn't happen with my other Enerkey 10A (neey clone or just rebadge) active balancer.

BartSolar · May 24, 2024

AshleyL said:
CORRECT. That is exactly what happening. I thought I was the only one who measured these voltages and noticed this pattern.
If the balancer doesn't start balancing due to lack of sun or heavy usage of the battery for few days (around 3 - 5 days), it will start beeping and flashing red the moment the trigger start voltage is reached.
Bluetooth connection is not required. I turned on the balancing via the app at start voltage 3.45v and leave it be. The beeping + flashing will happens after days of inactivity due to insufficient start voltage (lack of sun or heavy usage). If it is balancing at least once every day, the Neey 10A will not beep/flashing red.

Strange part, it doesn't happen with my other Enerkey 10A (neey clone or just rebadge) active balancer.

Mine is a Enerkey on the inside (version 1.5 -> seen on the system board), a Neey on the outside.

Regarding the rise of the voltage: see this:

AshleyL · May 25, 2024

BartSolar said:
Mine is a Enerkey on the inside (version 1.5 -> seen on the system board), a Neey on the outside.

Regarding the rise of the voltage: see this:

The one with a lot of Power On amount is the problematic beeping and red LED flashing NEEY 10A.
The second with low amount of Power On is the Enerkey 10A, never encounter any issue with this one.

How about yours?

BartSolar · May 25, 2024

Unaware of the problem, I though all was fine, I ordered a new/additional Neey 10A about a week ago, that arrived today. It is the one that has not worked yet. So to see, I'm probably going to be in trouble since hardware and software version of both boxes is the same...

I'm thinking about a simple solution to build an ESP that once a day/few days disconnects the - pole of the harnass for a while and than restarts the device. I need to test more, but when the caps were on 2.52V today and I restarted the device, the caps discharged themself tot 1.2v ?! If that works, a daily reset by a disconnect is simple.

AshleyL · May 26, 2024

BartSolar said:
View attachment 217564 View attachment 217565

Unaware of the problem, I though all was fine, I ordered a new/additional Neey 10A about a week ago, that arrived today. It is the one that has not worked yet. So to see, I'm probably going to be in trouble since hardware and software version of both boxes is the same...

I'm thinking about a simple solution to build an ESP that once a day/few days disconnects the - pole of the harnass for a while and than restarts the device. I need to test more, but when the caps were on 2.52V today and I restarted the device, the caps discharged themself tot 1.2v ?! If that works, a daily reset by a disconnect is simple.

So...you mean one of your balancer with 633 hours of Work Time + 159 Power On times....and with same production time as mine...........are beeping and flashing?
Well, at least we have a common ground to go.......

BartSolar · May 26, 2024

AshleyL said:
So...you mean one of your balancer with 633 hours of Work Time + 159 Power On times....and with same production time as mine...........are beeping and flashing?
Well, at least we have a common ground to go.......

yep...

The Power On times was in the time that I was unaware of the problem, so lots of trials. Now I know the "issue" I guess I can work out a solution, returning the box to some Chinese company feels a bit sketchy for me.

JD63 · May 26, 2024

BartSolar said:
yep...

The Power On times was in the time that I was unaware of the problem, so lots of trials. Now I know the "issue" I guess I can work out a solution, returning the box to some Chinese company feels a bit sketchy for me.

Yes, I have similar thoughts about returning the device. I received message from seller, that I had to pay postage and once they received it, they would provide refund. Then I would have no device and no refund I believe.

So like you, I will make something to monitor capacitor voltages and discharge as required. I have just ordered some 1 ohm 10 watt resistors for this task.

I checked my device yesterday and it has the SW-1.1.1 software version.

BartSolar · May 26, 2024

JD63 said:
Yes, I have similar thoughts about returning the device. I received message from seller, that I had to pay postage and once they received it, they would provide refund. Then I would have no device and no refund I believe.

So like you, I will make something to monitor capacitor voltages and discharge as required. I have just ordered some 1 ohm 10 watt resistors for this task.

I checked my device yesterday and it has the SW-1.1.1 software version.

Maybe we can discuss the solution?

First I was thinking about an ESP (with deepsleep for power save) with measurement and relais or transistor as switch for a resistor. But a mosfet with a gate from 2.6V or 2.7V (upwards) with a resistor might be much simpler and probably far less power consuming. Problem with a mosfet is a constant very small leak in the voltages when the gate should be closed (that I guess causes our current problem...) This is however only an issue when balancing, since the current now leaking into the cap's will be lost anyway if they reach over 2.7V.

What kind of solution are you thinking of?

Neey 10A balancer red LED flashing?

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