JK BMS Current Consumption (JK-B2A8S20P-H)

Which JK BMS's are affected by the high idle current consumption? I purchased mine last Summer June 2022, should I be concerned and check it out further? It is kind of a pain for me to disassemble the enclosure it is in so I thought I'd ask before I go through this extra effort. Thanks,

Russell

Nami said:

I see that your BMS is an earlier version. After January 2022, we agreed to replace all BMS interfaces with those in the picture,
I will contact the engineer to arrange a link cable of the previous interface for you,

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I have the later BMS and the small 2.5" display. Does the larger display have any audible alarms? It would be great to have an audible alarm to tell me if the BMS is about to shut down the battery. On a boat this is very important as the battery runs navigation lights, chart plotter, radar, etc

satmaster2000 said:

With the Softwareversion (V11.17H) seems to be some new information available on the main page. I think I understand "Heat Current" and "Heating Status" but what does "Charg. Plugged" mean?
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first I thougt it will detect if I am Charging the Battery (Daly and Jiabada do) but as you can see from the screenshot, I am charging at the moment with around 200W but "Charg. Plugged" still says: "Not Plugged"
@Nami perhaps you can tell?

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I had the same question regarding “charg. plugged”… I contacted the manufacturer/seller on AliExpress and they informed me it is the indicating whether a heating pad is connected or not. So the indication is rather misleading.
I made the suggestion to change this description in following update of the app… ?

patrickm said:

It seems like there is a real need for an open source scalable BMS for the DIY community. Sourcing reasonably priced copper inlay PCBs for the MOSFET power path would be an issue that would need to be resolved for that to happen.

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I've got decades of power electronics experience, including power inverters, battery chargers, and BMS's. Let me know if you or anyone want to collaborate on an open source BMS. I've reviewed what is currently available on-line and github, and JK is years ahead. But it's not perfect and it's not open.
Tim

OffgridSystems said:

I've got decades of power electronics experience, including power inverters, battery chargers, and BMS's. Let me know if you or anyone want to collaborate on an open source BMS. I've reviewed what is currently available on-line and github, and JK is years ahead. But it's not perfect and it's not open.
Tim

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Sounds really good and i would be interested. I could probably not contribute really much, but maybe some ideas. I have some basic knowledge in electronics including simple circuits with transistors, mosfets and build some easy power supplies. I even modded some heavy server power supplies to have adjustable voltage output to some extend. My biggest is a beefy 6 kW server psu that delivers 36...52V DC at more than 100 Amps. Couldn't get it to run from lower voltage as the UVP is very resistive.

Hi guys,

i have read so many different numbers on current consumption of the JK BMS that i am confused now

Could someone please sum up the consumption of typical kinds of JK BMS with Bluetooth on/off and in stand-by mode?
Does it consume anything at all if it is switched of via the switch? Or is there a deep-sleep mode and it will still consume some current (quiescent current)?

Thanks - much appreciated!

rilonau said:

Could someone please sum up the consumption of typical kinds of JK BMS with Bluetooth on/off and in stand-by mode?
Does it consume anything at all if it is switched of via the switch? Or is there a deep-sleep mode and it will still consume some current (quiescent current)?

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JK-B2A8S20P, about a year old.

At voltage 13.4v, only B+ and B- / sense minus wire connected to power:

Power off: 0.0125 mA
Power on: 97 mA average (95...120 mA)
With Bluetooth communication: 100 mA average

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K