Heltec (JK) 200A Smart BMS with 2A Active Balance
- Thread starter ArthurEld
- Start date
I'm not sure if i gave you wrong info... the version is in the bms itself, when i look into "About"
was that what you was asking ? or App Version ?
Also, I did get connected to all 3 BMS's and i did get all passwords set as i want them, and i can tell when i am connected to them, because the led will turn on solid.. It blinks when you're not connected to it.
I think something is strange with #2 BMS, it shows a -2.A in Balance current.. I have double checked several times, all connections are correct.
all settings are correct, the ohms of the cables are good with all the other balance leads. I have disconnected it and reconnected 2x,
I can't figure out.. The other BMS's show either low or 0A...but not a -Neg current draw..
any ideas ? is it defect ?
was that what you was asking ? or App Version ?
Also, I did get connected to all 3 BMS's and i did get all passwords set as i want them, and i can tell when i am connected to them, because the led will turn on solid.. It blinks when you're not connected to it.
I think something is strange with #2 BMS, it shows a -2.A in Balance current.. I have double checked several times, all connections are correct.
all settings are correct, the ohms of the cables are good with all the other balance leads. I have disconnected it and reconnected 2x,
I can't figure out.. The other BMS's show either low or 0A...but not a -Neg current draw..
any ideas ? is it defect ?
Is balancing enabled? What is your cell voltage delta?
Looks normal to me (assuming it's not LiFePO4). Balancing is active, and you have a 0.05V delta.
no.. it's Li-ion
Yeah, figured that when I saw the screenshot. All good.
Also, don't forget to calibrate the voltage in the app (if not done already).
I saw this, but i'm not sure on setting that exactly ? Do i just measure the battery with meter and enter that ?
I have learned a lot today... especially when trying to fire up the units.. the 1st one was easy. but the 2nd and 3rd one didn't want to start, and i thought they were dead, but i found out that the 1st one. the discharge and charge should be shut off 1st.
it was after i did this, that i was able to start the 2nd one... make sure the same was done to it, so i could start the 3rd one..
I got the hang of it now..
And i also discovered that there are 2 passwords to set.
the pairing password, and the settings password. I also wish they would remember the passwords..
yep.
Yes, or just disconnect the parallel packs (disconnect switch), turn them on, then put them in parallel (making sure the delta between them is not too large).
ok,, kinda thought that..
I tried to turn balance on again for that 1 unit.. it starts off +2a balancing, then jumps around and goes to -2a again.. I think this unit is screwy.
Maybe someone else can give an answer that might help me.
GXMnow
Solar Wizard
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That is how the balance works. It tracks the cell voltages. It decides which cell is the highest and pulls 2 amps from it to store in the super capacitor bank. Then it switches and discharges the super capacitor to push 2 amps into the lowest cell. It will bounce around from cell to cell to pull them all to the average cell voltage, but it only works on one cell at a time. Mine has been working great for a year now. I only had one issue, and it turned out to be a bad balance wire. The crimp was not done well. When the connection failed it showed 2 adjacent cells at zero volts and shut down the system. Once I fixed the balance lead, it was all back to normal.
This is normal.
ok, good to know.. i was a little worried that maybe something wasn't right, the BMS, was getting slightly warm, made me a little nervous,
GXMnow
Solar Wizard
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Has anyone here successfully changed the BMS name that comes up in the app when you connect to the BMS? I have not tried it yet myself, but I was asked about this from another user. If you have changed it, can you list what you had to do to make it happen.
Yes, without problems. I don't know if I remember by heart, but it's in the menu, there should be a pen icon (once connected), enter the name, done.
I think this came up in this thread earlier on - I linked the version of the app I'm using.
Edit: this one in the device list. Menu is on the top left of the app:
Last edited:
was probably me, and i have no solution yet. JKBMS email is not working right now either..
i have done this also,, you can change the name,, but the OK button does not accept...it is as if the OK button has no function.
Have you tried the version of the app I linked to?
Not yet, I had hoped for a solution 1st, plus, I just haven't had the time much the last 2 days.. I'll look into it tonight.
If i use another App, will i have to reload all settings again ?
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