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Neey 10A balancer red LED flashing?

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.
Click to expand...
Don't forget about your card payment charges and taxes if you opt for a refund—what a waste of money. Hanzkor (the seller) refused to acknowledge the problem with the balancer and blamed my battery pack, wiring, connection, etc. However, I have more battery packs than he thinks and informed him of this. It is impossible for all six of my different battery packs to exhibit the same issue.

BartSolar said:
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?
Click to expand...

Mine is more toward a manual and analog style. I set up a disconnect switch for the B0 wire and crudely soldered a few switches and wires to all the supercapacitors, connecting them to a few old 3V and 5V incandescent bulbs (from old flashlights). Whenever the beeping happens, I just switch off the B0 wire, turn on all the switches for the bulbs (what a bright light), then switch off the bulbs and reconnect the B0 wire.

Then goes into the app and turn on the switch again....
 
Hi,

an update from what I found out that seems to be a simple proces / solution (manual or to automate) that may help you out too.

- time how many days/hours your caps need to load till 2.5V (or probably less than 2.7V so the internal program doesn't get into error mode)
- disconnect B0-wire
- wait a sec
- reconnect B0-wire
- connect with BT by app
- turn the 'balance switch' in the app to on
- wait a few secs and hear/see all 4 caps discharge till around 1.1V by itself
- reset your timer for the next cycle :)

With this no need for discharge resistors (I guess as long as you stay under 2.7V), the 'app' inside will run and probably as part of its program reset the caps.

Using a simple switch this works. I will do this by a relay and ESPHome with the Heltec/Neey addon automated by Home assistant so it works when I'm away for a longer period than about 4 days and since I want this to be a fire-and-forget solution. The ESPHome Heltec/Neey*) addon works perfect, I tested this for couple of days now.

*) https://github.com/syssi/esphome-jk-bms
and use https://github.com/syssi/esphome-jk-bms/blob/main/esp32-heltec-balancer-ble-example.yaml (adapt 1 line of code for the balance current of a 10A Neey, if needed I can provide some help).
 
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BartSolar said:
Hi,

an update from what I found out that seems to be a simple proces / solution (manual or to automate) that may help you out too.

- time how many days/hours your caps need to load till 2.5V (or probably less than 2.7V so the internal program doesn't get into error mode)
- disconnect B0-wire
- wait a sec
- reconnect B0-wire
- connect with BT by app
- turn the 'balance switch' in the app to on
- wait a few secs and hear/see all 4 caps discharge till around 1.1V by itself
- reset your timer for the next cycle :)

With this no need for discharge resistors (I guess as long as you stay under 2.7V), the 'app' inside will run and probably as part of its program reset the caps.

Using a simple switch this works. I will do this by a relay and ESPHome with the Heltec/Neey addon automated by Home assistant so it works when I'm away for a longer period than about 4 days and since I want this to be a fire-and-forget solution. The ESPHome Heltec/Neey*) addon works perfect, I tested this for couple of days now.

*) https://github.com/syssi/esphome-jk-bms
and use https://github.com/syssi/esphome-jk-bms/blob/main/esp32-heltec-balancer-ble-example.yaml (adapt 1 line of code for the balance current of a 10A Neey, if needed I can provide some help).
Click to expand...
Hmm...... have to buy ESP32 board, maybe in the future if there is a day where I am really frustrated with the manual method. On the other hand, I just placed order to another 10A balancer from Enerkey instead of Hankzor.
 
I reume this post. I am wondering why i followed step by step the tutorial, so i disconnet the black cable, reconnet it, acivated on the app the balance button, but it continues to flash…. Any fedback? I have 3 neey balancers and one time every 6 Welson i need to discarge the super capacitors. Just to knowledge i reduced the charge voltage to 55.2V…
 
Tailele said:
I reume this post. I am wondering why i followed step by step the tutorial, so i disconnet the black cable, reconnet it, acivated on the app the balance button, but it continues to flash…. Any fedback? I have 3 neey balancers and one time every 6 Welson i need to discarge the super capacitors. Just to knowledge i reduced the charge voltage to 55.2V…
Click to expand...
You missed out a lot of reading there...........nothing you can do other than disconnect the balancer, don't leave it connected and let it self-discharge (1 - 2 days).

Connect and use the balancer only when you want to balance your battery pack.

There is faulty batch in circulation. If you are unlucky like few of us, unless you want to spend a lot of effort to automate it, don't leave the balancer connected all the time.
 
The 4A version is working very well for me. Saved a couple of big brand welded cells that were 200 mV out of balance.
 
AshleyL said:
You missed out a lot of reading there...........nothing you can do other than disconnect the balancer, don't leave it connected and let it self-discharge (1 - 2 days).

Connect and use the balancer only when you want to balance your battery pack.

There is faulty batch in circulation. If you are unlucky like few of us, unless you want to spend a lot of effort to automate it, don't leave the balancer connected all the time.
Click to expand...
I automated the system by purchasing a timer that interrupts the black cable B0 for 3 minutes every day and then reconnects it. Previously I had discharged all the super capacitors up to 1.5V. In the end nothing changed, when it does important cycles, that is when it starts charging from a percentage of 10% up to 100%, it goes into error. By the way, even if I interrupt the balancing in the application using the appropriate button, the balancer continues to balance anyway. It must be a bug. In any case I must be very unlucky because I bought 3 and all 3 have the same problem.
 
BarracudaBob said:
The 4A version is working very well for me. Saved a couple of big brand welded cells that were 200 mV out of balance.
Click to expand...
I also bought 2 versions of this version, honestly the 10A one works much better, when it has no problems.
 
Tailele said:
I automated the system by purchasing a timer that interrupts the black cable B0 for 3 minutes every day and then reconnects it. Previously I had discharged all the super capacitors up to 1.5V. In the end nothing changed, when it does important cycles, that is when it starts charging from a percentage of 10% up to 100%, it goes into error. By the way, even if I interrupt the balancing in the application using the appropriate button, the balancer continues to balance anyway. It must be a bug. In any case I must be very unlucky because I bought 3 and all 3 have the same problem.
Click to expand...
Same hardware/firmware revision for all three?
 
There were a couple of threads about this. I tried everything and even top balanced it my self manually, spent weeks charging discharging, then I put a EnerKey 4A Active Balancer on the Pack. Set it for start 3.45 stop 3.40 and top balanced it low current overnight and lived happily ever after.
1729252576263.png
 
BarracudaBob said:
I have 3 running flawlessly. Fixed my >200mV differential from the "most popular server rack battery"
View attachment 250648
Click to expand...
i really wonder if i got scammed or what... trust me it was not cheap for four of them when I bought them and I ordered them form the NEEY alibabba page (maybe it was alipwhatever) but i used the info from andy's garage to order them. so to say I was hot was an understatement. two did the same thing so i gave up. the GPS light would blink and the damn thing would not talk to the BT app. i have had that happen on a couple of other chineese apps, and if I walked out of the shop to wear I had signal, they would suddenly work. does me no good my batteries are in the shop in what is basically a double layered steel structure so zero cell reception.
 
BarracudaBob said:
The 4A version is working very well for me. Saved a couple of big brand welded cells that were 200 mV out of balance.
Click to expand...

BarracudaBob said:
I used the link from Andy, Off Grid Garage, and ordered of AllieExpress
Click to expand...
For the record, there is no issue with 4A variant.

Only 10A variant so far. Not sure about 8A variant
I got a feeling the issue is the firmware/software, if only there is a way to update the firmware.
I meant the problematic batch can be used normally, just that it cannot be left connected to the pack without balancing function being turned on for more than 24 hours. If the balancing function being turned on at least once every 24 hours, it will work okay. Unfortunately due to weather quirk, it is very unlikely for one to fully charge the battery pack to full voltage and triggering the balancer to work.
 
BarracudaBob said:
I used the link from Andy, Off Grid Garage, and ordered of AllieExpress
View attachment 250672
Click to expand...
does your cellphone, or did your cell phone have uninterupted service while commisioning? jsut curious as like i said I have noticed this as an issue with severla chineese apps. it really has no need for the data but will not work without it.

One thing i have noticed is that the DALY app when it cannot call home via the cell phone will lock up and start acting weird. it usually takes about 10 minutes of continuous use before it does it. I have gotten into the habit of shutting it off after one or two minutes and then restarting the app to avoid this annoying function. it even has a popup that says no cell service.... also if you have your location set to off it will misbehave after a time.
 
I also have the 15A that I only use on the battery to top balance when open. Alligator Clips. I have spent some money fixing a product that was fully warrantied. I'll just stop there.

FYI, I got the Vatrer battery and it was perfectly balanced where the more famous and popular brand was not. No way to fix welded cells. Shipping and warranty both expensive and problematic. Adding the balancer was the ezest solution. Only used when needed and only used at top of charging.

I have always been a fix it myself person so I now prefer bolted cells.
 
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Daddy Tanuki said:
does your cellphone, or did your cell phone have uninterupted service while commisioning? jsut curious as like i said I have noticed this as an issue with severla chineese apps. it really has no need for the data but will not work without it.

One thing i have noticed is that the DALY app when it cannot call home via the cell phone will lock up and start acting weird. it usually takes about 10 minutes of continuous use before it does it. I have gotten into the habit of shutting it off after one or two minutes and then restarting the app to avoid this annoying function. it even has a popup that says no cell service.... also if you have your location set to off it will misbehave after a time.
Click to expand...
I used a unused phone with internet no SIM. Low Power Bluetooth asks for gps location, I don't like that, but made settings and it worked.
 
Update:
One of my Enerkey 10A has issue with charging the supercapacitor.
The initial workaround is to lower the balance current from 10A to 6A, then to 4A and this week 1A. Dying maybe?

Normally, it will take 10 - 15 second to charge the supercapacitor with power from highest cell at 10A and 5-8 second to discharge it to lowest cell.
Now, if I set the at 10A, it charges the supercapacitor power at 5A - 6A for 2 seconds and immediately discharge 1.5 - 2A to lowest cell in 1 second, rinse and repeat.
 
Posted elsewhere and Ashley sent me here. Thank you.

My 4A version has same problem. Will let discharge for a few days and try again. Will install a switch on Black B0 wire and turn NEEY on when I have SOC to need it.

... on a sailboat with more battery (580Ah) than production (400W- sometimes 600).

I will ask, anyone else using a balancer on a 4 cell 12 V battery... what are you using as power for the NEEY. Manual says 30-100V power required. Using a simple 12-> 48V 5A dumb tansformer.
 
CoachEgbert said:
Posted elsewhere and Ashley sent me here. Thank you.

My 4A version has same problem. Will let discharge for a few days and try again. Will install a switch on Black B0 wire and turn NEEY on when I have SOC to need it.

... on a sailboat with more battery (580Ah) than production (400W- sometimes 600).

I will ask, anyone else using a balancer on a 4 cell 12 V battery... what are you using as power for the NEEY. Manual says 30-100V power required. Using a simple 12-> 48V 5A dumb tansformer.
Click to expand...
I was using this for my 4S pack with NEEY 4A :
1741008444458.png

Bought 10 units of 10A ENERKEY/NEEY and 8 units "faulty" or behaving strange after close to one year of usage.
Currently I am planning to rip out NEEY/ENERKEY 10A active balancers from all my battery packs, replacing it with Heltec 5A capacitive active balancer + A30-U1 and call it a day.
*Too much hassle of manually disconnecting balancers via switch and wait few days for 10A balancer's supercap to drain off, switch it on and going into Bluetooth app just to enable the balancing again* Rinse and repeat after a week or a month.

I just hope JKBMS active balancer circuit doesn't kicked the bucket suddenly.

If you confirmed that 4A version also has the same issue, I shall just use Heltec 5A and A30-U1 controller again for my remaining 4S battery packs.
 
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