Hankzor JK BMS and a working test

Jane · Jul 20, 2022

I bought JK-B2A24S20P and want to use it with 16 battery cells (3.2V 280Ah each ). When all cells are connected together,I have more than 50V .
Before connecting battery with MPPT tracker I would like to test that BMS with the battery cells . Is it possible?
I connected cables marked B- to main battery minus and cable P- to battery main plus. Is it correct?
Thank you for help

timselectric · Jul 22, 2022

Jane said:
I bought JK-B2A24S20P and want to use it with 16 battery cells (3.2V 280Ah each ). When all cells are connected together,I have more than 50V .
Before connecting battery with MPPT tracker I would like to test that BMS with the battery cells . Is it possible?
I connected cables marked B- to main battery minus and cable P- to battery main plus. Is it correct?
Thank you for help

P- goes to the loads negative. I hope that you didn't fry the BMS. Putting it on the battery main positive, is a dead short of the whole battery. Hopefully not, it should have been off. Until you turn it on.
But yes, you can view the battery in the app. Once it's correctly connected.

Steve_S · Jul 22, 2022

The New General JKBMS Manual is in final stages and should be available within a few days and it has considerably more information than previous ones and in English, not a Hybrid of Chinese/English.

Below os the Wiring Diagram for a 16S (48V/LFP) configuration.
Hope it helps, Good Luck.
Steve

Jane · Jul 22, 2022

timselectric said:
P- goes to the loads negative. I hope that you didn't fry the BMS. Putting it on the battery main positive, is a dead short of the whole battery. Hopefully not, it should have been off. Until you turn it on.
But yes, you can view the battery in the app. Once it's correctly connected.

Thank you for your reply.
Do you mean that P- must be connected e.g to pure sine invertor minus pole?

Jane · Jul 22, 2022

Steve_S said:
The New General JKBMS Manual is in final stages and should be available within a few days and it has considerably more information than previous ones and in English, not a Hybrid of Chinese/English.

Below os the Wiring Diagram for a 16S (48V/LFP) configuration.
Hope it helps, Good Luck.
Steve

Thanks for your reply.
In that schematic below is green circled a battery and blue circled an invertor?

Steve_S · Jul 23, 2022

Jane said:
Thanks for your reply.
In that schematic below is green circled a battery and blue circled an invertor?

P- is Battery Pack (-) in & out from Solar Charge Controller, Inverter/Charger or another qualified charging device.
B- is to Battery Pack cells only.
These are Common-Port BMS'.

Steve

timselectric · Jul 23, 2022

Jane said:
Thank you for your reply.
Do you mean that P- must be connected e.g to pure sine invertor minus pole?

It is the negative for whatever loads you want to feed from the battery.

Steve_S · Jul 23, 2022

The BMS only operates on the NEG line.in between the Cells NEG & the NEG Battery pack Post.
The POS line is direct from cells to (+) battery pack post.
The NEG is the IN/OUT control Line as these are Common-Port BMS'. Therefore the IN/OUT voltage & amps are handled by the NEG line.
Very Few BMS' operate with both (-) & (+) and those are for special applications like Hih End EV's.
Separate Port BMS' use Relays & Contactors EXTERNAL to the actual BMS which is the common method for EV Systems which are moving hundreds of Volts & Major Amperage which does not really apply to ESS (Energy Storage Systems).

Hope that helps, Good luck.

Jane · Jul 23, 2022

Thank you for your reply.
So it means connections will be:

From Invertor plus pole to Battery main plus pole
from MPPT charger plus pole to Battery main plus pole
From Invertor minus pole to JK BMS P- pole
From MPPT charger minus pole to JK BMS P- pole

Is it correct?

P.S. main plus pole is 48V ( 16 cells in series)

timselectric · Jul 23, 2022

Yes, but you need OCP at the battery main +.
Either a fuse or breaker.

Jane · Jul 26, 2022

Thank you for your reply.
So I need to connect MPPT between Battery main plus pole and JK BMS P- pole.
But when I connected MPPT to those poles, nothing happened.
So I checked and there was no voltage between those poles ( Battery pack has about 51V between battery main plus and battery main minus)

Which conditions must be met so that I can measure voltage between battery main plus
and JK BMS P- pole?
I need to be sure that MPPT can see the battery , otherwise MPPT can be damaged
Thank you for your help

timselectric · Jul 26, 2022

The BMS needs to be turned on. If yours doesn't have a switch. You have to input at least 5v to the B+ and P - .

Jane · Jul 26, 2022

Yes, I turned it on by 5v to the B- and P- ( I can check battery cells parameters in the bluetooth app,) yet no good voltages
between battery main plus and JK BMS P- pole.
Where can be a problem then?

NCSolarGarage · Jul 26, 2022

Is discharge enabled in the app?

timselectric · Jul 26, 2022

Check that

Jane · Jul 27, 2022

Thanks a lot for help.
Yes, Discharged ws not enabled and after doing so, there is voltage between battery main plus and JK BMS P- pole.

Steve_S · Jul 27, 2022

Jane, take the time to read the latest manual
: NEW JK-BMS Manual V: 2.2 2022/07/22

Hankzor JK BMS and a working test

Jane

New Member

timselectric

If I can do it, you can do it.

Steve_S

Offgrid Cabineer, N.E. Ontario, Canada

Jane

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Steve_S

Offgrid Cabineer, N.E. Ontario, Canada

timselectric

If I can do it, you can do it.

Steve_S

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Jane

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timselectric

If I can do it, you can do it.

Jane

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timselectric

If I can do it, you can do it.

Jane

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NCSolarGarage

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timselectric

If I can do it, you can do it.

Jane

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Steve_S

Offgrid Cabineer, N.E. Ontario, Canada

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